sqlite-provider 0.0.2

# WORK

## Feature Request
- Design the architecture for a Rust crate named `sqlite-provider` that provides a backend-agnostic abstraction over the SQLite3 C API.
- Include a provider SPI trait for backends (libsqlite3, sqlcipher, libsql) with versioning considerations.
- Provide safe wrapper types (Connection, Statement, Value) with lifetime handling and error mapping.
- Provide an extension framework for scalar functions with safe routing from C callbacks into Rust.
- Provide a virtual table abstraction with lifecycle management (xCreate/xConnect/xDisconnect/xDestroy).
- Write the design in English to `.codex/design/sqlite-provider`.

## Agent Work Plan
1. Baseline setup: confirm repo state, create `.codex` directories, and capture initial knowledge entries.
2. Draft the high-level architecture and core trait sketches (provider SPI, safe API wrappers) including versioning strategy.
3. Draft extension framework and virtual table abstractions with lifecycle and safety strategies.
4. Finalize the design doc with usage example and panic/FFI safety notes; update progress tracking.
5. Review design doc completeness and API correctness; refine SPI signatures and add aggregate-function support details.
6. Record new findings and update knowledge entries after refinements.
7. Backend constraints review: inspect current design doc and enumerate backend-specific constraints for libsqlite3, SQLCipher, and libsql (compatibility, keying, and API extensions).
8. Update the design doc to bake in backend constraints (open options, optional keying APIs, backend identification/versioning, extension hooks).
9. Record backend constraint findings and design updates in `.codex/knowledge`; update work progress.
10. Review the local `sqlite3.h` interface surface and record concrete API facts in `.codex/knowledge`.
11. Compare the design doc against `sqlite3.h` and list missing features or mismatches; summarize for the user.
12. Update work progress after the review.
13. Update the design doc with `create_window_function` SPI entry and feature gating.
14. Add optional extension traits section covering hooks/backup/blob/serialize/WAL/metadata.
15. Add explicit notes on `RawBytes` length semantics and `result_*` ownership guarantees; update knowledge entries.
16. Add safe wrapper API sketches for optional extension traits.
17. Tighten `OwnedBytes`/`free` ownership model in the serialize trait and update safety notes.
18. Record new design updates in `.codex/knowledge` and update progress.
19. Flesh out safe wrapper callback registration for trace/authorizer hooks.
20. Add `SerializedDb::into_vec()` helper to detach backend allocation.
21. Record new wrapper changes in `.codex/knowledge` and update progress.
22. Add typed authorizer action constants/enum and structured `TraceEvent` decoding for trace callbacks.
23. Record new trace/authorizer updates in `.codex/knowledge` and update progress.
24. Add `AuthorizerResult` enum and per-variant trace docs; update knowledge tracking.
25. Add AuthorizerResult return-code docs and example usage for trace/authorizer handlers.
26. Read both design documents (`.codex/design/sqlite-provider.md` and `sqlite-provider.md`) and capture concrete structural/API differences.
27. Compare SPI coverage (versioning, open options, prepare/bind/value/column, UDF/window, vtab/module) and list feature deltas.
28. Compare safety/ownership/lifetime strategies (RawBytes vs slice, ownership for results, callback handling) and extract trade-offs.
29. Summarize pros/cons of each design version and identify when each is preferable.
30. Record comparison facts in `.codex/knowledge` with file locations.
31. Update work progress after completing the comparison write-up.
32. Initialize the Rust crate skeleton (`Cargo.toml`, `src/lib.rs`, module layout) and note any design feasibility adjustments.
33. Implement core SPI types plus `error`/`value` modules (flags, `RawBytes`, `Error`, `Value`, `ValueRef`) with unit tests.
34. Implement `Connection`/`Statement`/`Row` wrappers (prepare/step/bind/column access) and add MockApi-based tests.
35. Implement function UDF framework (`Context`, scalar/aggregate/window registration + trampolines) with tests.
36. Implement optional extension wrappers (hooks/backup/blob/serialize/WAL/metadata) and tests for callback handles + serialize.
37. Implement virtual table traits and minimal module glue; document any backend constraints in knowledge.
38. Add integration tests for key flows (prepare/step, UDF, aggregate, serialize, hooks) and run `cargo test`.
39. Update `.codex/knowledge` with concrete code facts/locations and update work progress.
40. Post-implementation review: compare implemented modules to design doc, note deviations (SPI additions, vtab generics), and verify critical components are present.
41. Scan for performance/readability/test-coverage improvements and record any follow-ups.
42. Update work progress after the review sweep.
43. Review current implementation against `.codex/design/sqlite-provider.md`, note any gaps or feasibility concerns, and identify performance/test improvements.
44. Reduce hot-path allocations in virtual table argument handling; keep the API simple and add concise safety comments where needed.
45. Add targeted doc comments for tricky lifetime/ownership semantics in public APIs (e.g., RawBytes, result_text/blob usage).
46. Add integration tests for window function registration and virtual table feature gating; add unit tests for new vtab argument handling.
47. Run `cargo test`, then update `.codex/knowledge` with new facts and progress.
48. Review current changes (manual inspection since no git) against the design doc and confirm coverage; note any remaining gaps or improvement opportunities.
49. Apply any remaining improvements discovered during the review (or record that none are needed).
50. Update progress/knowledge to reflect the review outcome.
51. Plan and implement the `sqlite-provider-abi` crate: add workspace member, cdylib config, and ABI registry design; document constraints in WORK.md.
52. Implement ABI handle types and provider registry (core SPI + optional extensions + extras) in `sqlite-provider-abi`.
53. Implement C ABI symbols from `sqlite3.h`, including utility functions and error handling; keep hot paths allocation-light.
54. Add minimal tests for ABI helpers and run `cargo test`.
55. Update `.codex/knowledge` with ABI design/implementation facts and update progress.
56. Review `sqlite-provider-abi` symbol coverage against `sqlite3.h` using `rg` + `comm`, confirm all required `sqlite3_*` symbols are exported (non-function typedefs excluded).
57. Review ABI shim for design-doc alignment and potential safety/perf issues; record any gaps or improvements (or confirm none).
58. Run tests (`cargo test`, `cargo test -p sqlite-provider-abi`) and capture results for the ABI shim.
59. Update `.codex/knowledge` with symbol coverage verification + test execution facts; update work progress.
60. Add `sqlite-provider-sqlite3` workspace crate implementing a dynamic `libsqlite3` backend adapter (`Sqlite3Api` + optional metadata); keep dependencies minimal (`libc` only) and document any safety assumptions inline.
61. Add ABI-shim integration tests for `sqlite3_exec`/`sqlite3_get_table` using a mock provider with predictable row data and column names.
62. Add ABI-shim end-to-end integration test that registers the `libsqlite3` adapter (if available) and validates `sqlite3_exec` + `sqlite3_get_table` against a real in-memory database; skip when `libsqlite3` cannot be loaded.
63. Run `cargo test` and `cargo test -p sqlite-provider-abi`; capture results and update `.codex/knowledge` with new adapter/test facts.
64. Post-change review: scan new adapter/test code for safety/perf issues or missing coverage; record any follow-up improvements (or confirm none).
65. Update progress/knowledge to reflect the review outcome.
66. Integration-test discovery pass: re-read current ABI tests and verify whether they are true black-box dynamic-loading tests or in-process Rust-link tests.
67. Identify ABI initialization constraints for dynamic loading (provider registration and backend bootstrap path), and define a production-safe initialization design.
68. Design the black-box test architecture (consumer process, dynamic loading path, symbol mapping strategy, and result assertions).
69. Define test directory structure plus build/run orchestration changes (Makefile/scripts/env vars) that guarantee the cdylib artifact is built and explicitly loaded.
70. Specify detailed scenario coverage: open/close, exec DDL+DML, prepare/bind/step/column/finalize, and backend error propagation through the C ABI.
71. Write `.codex/design/integration-tests.md` in English with concrete code-location references and implementation-oriented snippets.
72. Implementation phase (next): add ABI bootstrap hooks/default backend registration path and add the new black-box integration test assets.
73. Validation phase (next): run the new black-box test target(s), collect results, and update knowledge/progress with any follow-up fixes.
74. Feasibility audit for `.codex/design/integration-tests.md` against current code: verify required symbols, bootstrap constraints, and cross-crate dependency direction before edits.
75. Module A (ABI bootstrap): add idempotent default-backend bootstrap helper and exported `sqlite3_provider_init_default`, then wire it into `sqlite3_initialize` and `sqlite3_open_v2`.
76. Module A validation: run focused ABI tests around open/exec/get_table and ensure no regressions in existing Rust-linked integration tests.
77. Module B (orchestration): add deterministic artifact locator script and root `Makefile` targets for building/running black-box tests.
78. Module C (black-box tests): add Python `ctypes` consumer tests that dynamically load only the produced cdylib and cover lifecycle, exec, prepare/bind/step/column/finalize, and error propagation.
79. Module C validation: run the black-box test entrypoint and resolve any ABI mismatch findings.
80. Documentation pass: add concise doc comments/safety notes for the new public bootstrap ABI and any tricky ownership points touched in this change.
81. Knowledge capture: record concrete code facts and run results in `.codex/knowledge/abi-blackbox-integration-tests.md`.
82. Final review: compare implementation against the design doc, scan for performance/readability regressions, and update progress status.
83. Delivery pass (user request): re-read `.codex/design/integration-tests.md` and verify that each requested deliverable file exists and matches bootstrap constraints.
84. Tighten Python ABI typing for `sqlite3_exec` error out-parameter to `char**` semantics in the black-box runner while preserving explicit `sqlite3_provider_init_default` bootstrap call.
85. Re-run the black-box suite strictly through `make test-abi-blackbox` (no `cargo test`) and confirm pass/fail status.
86. Record concrete 2026-02-13 delivery verification facts and updated file locations in `.codex/knowledge/abi-blackbox-integration-tests.md`.
87. Update work progress/review notes for this delivery pass.
88. New request intake: review current completed plan state and existing design/knowledge docs before creating a new design artifact.
89. Define an SDET-oriented test strategy for SQLite local-first edge-node behavior covering concurrency, JSON1, analytics SQL correctness, and rollback atomicity.
90. Write `.codex/design/test-suites.md` with distinct scenario sections, each including strategy plus representative `pytest` + `sqlite3` code snippets and explicit PRAGMA configuration comments.
91. Capture concrete delivery facts and file locations for this test-suite design in `.codex/knowledge/sqlite3-api-test-suite-design.md`.
92. Update `WORK.md` progress/review notes for the new design-delivery task.
93. New review request intake: read `.codex/design/test-suites.md` completely and perform a codebase-grounded feasibility/quality review.
94. Re-read unfamiliar runtime paths across `sqlite-provider`, `sqlite-provider-abi`, `sqlite-provider-sqlite3`, and tests to eliminate ambiguity before proposing revisions.
95. Identify strengths/weaknesses/gaps of the current test-suite design against production requirements (reliability, performance hot path awareness, and deploy readiness).
96. Write revised, self-contained design document to `.codex/design/abc_v2.md` with concrete implementation guidance and code-location references.
97. Record review/revision facts in `.codex/knowledge/sqlite3-api-test-suite-review.md`.
98. Update `WORK.md` progress/review notes for this review/revision delivery.
99. New implementation intake: read `.codex/design/test-suites.md` completely, re-read existing runtime/test code paths, and perform a feasibility audit against current ABI/test harness constraints.
100. Decompose the implementation into single-responsibility modules (shared helpers, scenario tests, orchestration) and record the module-by-module execution/testing plan in `WORK.md`.
101. Module 1 (shared helper): add `tests/sqlite_provider_py/conftest.py` with deterministic connection policy (`WAL`, sync mode, FK, busy timeout) and bounded lock-retry helper.
102. Module 1 validation: run the new Python test package in collection/targeted mode to confirm helper wiring and import/package layout.
103. Module 2 (scenario tests): add `test_concurrency_busy.py`, `test_json1_hybrid.py`, `test_window_cte_integrity.py`, and `test_transaction_atomicity.py` aligned with design assertions and anti-flake guards.
104. Module 2 validation: run each scenario test module individually and address reliability/performance issues (timeouts, deterministic ordering, minimal per-row Python overhead).
105. Module 3 (orchestration): update `Makefile` with a dedicated target for the new pytest suite and keep existing ABI black-box target unchanged.
106. Full validation: run the new pytest target plus required Rust tests (`cargo test <test_case_name>` focused runs and baseline `cargo test`) and resolve regressions.
107. Documentation/readability pass: add concise comments/docstrings for tricky test orchestration details only where needed.
108. Knowledge/progress update: record concrete implementation facts and run outcomes in `.codex/knowledge`, then update `WORK.md` progress and review notes.
109. Shim-enforcement request intake: ensure SQL scenario tests route through `libsqlite_provider_abi.so` only, and define symbol-origin verification for `sqlite3_open` and `sqlite3_exec`.
110. Module A (ctypes harness): replace Python `sqlite3`-based helpers with C-ABI wrappers in `tests/sqlite_provider_py/conftest.py`, including `sqlite3_provider_init_default` bootstrap and `dladdr` origin assertions.
111. Module A validation: run syntax checks and direct helper initialization to verify symbol-origin assertions and ABI bootstrap behavior.
112. Module B (scenario migration): rewrite all `tests/sqlite_provider_py` scenarios to use the ctypes C-ABI wrapper only (no Python `sqlite3` module calls).
113. Module B validation: execute migrated scenario functions via a direct Python harness with `SQLITE3_SPI_LIB` configured, and confirm all assertions pass.
114. Module C (orchestration): update `Makefile` target `test-sqlite-provider-py` to build ABI first and inject `SQLITE3_SPI_LIB` from the locator script.
115. Full validation for shim-enforcement pass: run `make test-sqlite-provider-py`, `make test-abi-blackbox`, focused `cargo test <test_case_name>`, and baseline cargo suites; capture environment blockers if present.
116. Knowledge/progress update: record concrete code locations and validation outcomes for this shim-enforcement pass in `.codex/knowledge` and `WORK.md`.
117. Unsafe-warning intake: map Rust 2024 `unsafe_op_in_unsafe_fn` warnings to concrete call sites in `src/connection.rs`, `src/function.rs`, `src/provider.rs`, `src/value.rs`, and `src/vtab.rs`.
118. Safety patch module: wrap each warned unsafe operation in explicit `unsafe { ... }` blocks with narrow scope; keep semantics unchanged and add concise safety comments only where needed for non-obvious raw-pointer assumptions.
119. Validation pass: run crate tests (`cargo test`) and confirm the warning set is cleared (or capture exact residual blockers if the environment prevents full execution).
120. Knowledge capture: record precise touched functions and safety rationale in `.codex/knowledge/sqlite-provider-impl.md`.
121. Progress/review update: mark completion status in `WORK.md` and append dated review notes for this warning-remediation pass.
122. Clippy warning intake (2026-02-16): map the reported `type_complexity`, `not_unsafe_ptr_arg_deref`, `len_without_is_empty`, `too_many_arguments`, `missing_safety_doc`, and `unnecessary_cast` findings to concrete call sites in `src/connection.rs`, `src/function.rs`, `src/provider.rs`, and `src/vtab.rs`.
123. Safety/API patch module: add a trace callback type alias, mark `Connection::progress_handler` as `unsafe` with safety docs, and add `Blob::is_empty`; keep behavior unchanged.
124. SPI lint-hardening module: add unsafe-trait `# Safety` docs and narrowly scoped Clippy allows for SQLite C-signature-heavy APIs where argument counts/doc granularity are intentionally inherited from upstream ABI.
125. Virtual-table cleanup module: remove redundant raw-pointer casts in vtab glue while preserving existing associated-type bounds and ownership behavior.
126. Validation pass (Clippy): run `cargo clippy --all-targets --all-features` and fix any residual diagnostics from this warning set.
127. Knowledge/progress update: record concrete code locations and validation results in `.codex/knowledge/sqlite-provider-impl.md`, then mark completion and append dated review notes in `WORK.md`.
128. Rust 2024 adapter intake: inspect `sqlite-provider-sqlite3/src/lib.rs` compile/lint output for `extern`-block and `unsafe_op_in_unsafe_fn` issues from `cargo test -p sqlite-provider-abi`.
129. Adapter safety patch module: fix the Rust 2024 `extern` block requirement and apply narrowly scoped lint handling for `unsafe_op_in_unsafe_fn` in the dynamic libsqlite3 adapter without changing runtime behavior.
130. Validation pass (adapter): run `cargo test -p sqlite-provider-abi` and confirm compile/test status after the adapter patch.
131. Knowledge/progress update: record concrete adapter changes and validation outcome in `.codex/knowledge/sqlite-provider-sqlite3.md`, then mark completion and append dated review notes in `WORK.md`.
132. Rust 2024 ABI blocker intake: map `sqlite-provider-abi/src/lib.rs` `unsafe attribute used without unsafe` failures (`#[no_mangle]`) discovered during validation.
133. ABI export-attribute patch module: apply mechanical migration from `#[no_mangle]` to `#[unsafe(no_mangle)]` for exported C symbols without changing symbol names or function bodies.
134. Validation pass (ABI export attrs): rerun `cargo test -p sqlite-provider-abi` and confirm compile/test status.
135. Knowledge/progress update: record concrete ABI export-attribute migration facts in `.codex/knowledge/sqlite-provider-abi.md` and update `WORK.md` progress/review notes.
136. Clippy cast-warning intake (2026-02-18 follow-up): map reported `clippy::unnecessary_cast` call sites in `sqlite-provider-sqlite3/src/lib.rs` and compare with current source state.
137. Adapter cast-remediation module: ensure redundant same-type raw-pointer casts are removed at bind/column/result/value/cstr conversion call sites while preserving behavior.
138. Validation pass (adapter cast warnings): run `cargo clippy -p sqlite-provider-sqlite3 --lib` and `cargo test -p sqlite-provider-abi` to confirm adapter cast warnings are absent in the reported build path.
139. Knowledge/progress update: record concrete cast-warning status and validation facts in `.codex/knowledge/sqlite-provider-sqlite3.md`; update `WORK.md` progress/review notes.
140. ABI warning/error intake (2026-02-18): map the newly reported `sqlite-provider-abi/src/lib.rs` lint set (`not_unsafe_ptr_arg_deref`, `unsafe_op_in_unsafe_fn`, style/cast findings) and confirm remaining `sqlite-provider-sqlite3` cast diagnostics.
141. ABI remediation module: apply FFI-appropriate lint policy plus targeted cleanup edits (remove redundant casts, simplify style warnings) without changing exported symbol behavior.
142. Validation pass (ABI warning set): run `cargo clippy -p sqlite-provider-abi --all-targets --all-features`, `cargo clippy -p sqlite-provider-sqlite3 --all-targets --all-features`, and `cargo test` for `sqlite-provider-abi`.
143. Knowledge/progress update: record concrete fixes and clean validation outcomes in `.codex/knowledge/sqlite-provider-abi.md`, `.codex/knowledge/sqlite-provider-sqlite3.md`, and `WORK.md`.
144. New review request intake (2026-02-18): read `sqlite-provider.md` completely, re-read all implementation/test files across `src/`, `sqlite-provider-abi`, `sqlite-provider-sqlite3`, and Python suites, and confirm current runtime validation status.
145. Design-conformance audit: map design requirements (safety, lifetimes, callback panic boundaries, SPI capability handling) to concrete implementations and identify discrepancies with file/line evidence.
146. Quality/performance audit: review hot paths and ownership boundaries for obvious UB/leak/regression risks; prioritize production-impacting findings and missing tests/docs.
147. Validation pass for review evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and black-box targets; capture environment blockers exactly.
148. Deliver review artifact: write `sqlite-provider-review.md` with severity-ordered findings, open questions/assumptions, design-goal assessment, and discrepancy summary.
149. Knowledge/progress update: record concrete review facts in `.codex/knowledge` and update `WORK.md` progress/review notes for this request.
150. Review-remediation intake (2026-02-18): read `sqlite-provider-review.md`, re-read all flagged code paths (`src/value.rs`, `src/function.rs`, `src/vtab.rs`, `src/connection.rs`, `sqlite-provider-abi/src/lib.rs`), and define a concrete fix sequence.
151. Safety remediations module: add panic-containment boundaries for virtual-table callbacks and aggregate/window init callbacks; harden text decoding paths to avoid unchecked UTF-8 UB while keeping hot paths allocation-light.
152. Resource-lifetime remediations module: fix hook-registration error-path leaks and stop per-call virtual-table module leakage by caching module descriptors per Rust type instantiation.
153. ABI correctness remediations module: add explicit SQLite-C-to-internal flag translation for `sqlite3_open_v2` and `sqlite3_create_function_v2`/`sqlite3_create_window_function` flag bits.
154. Targeted regression tests module: add concise tests for panic containment, invalid UTF-8 handling, module-descriptor reuse, hook-registration cleanup, and ABI flag translation behavior.
155. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features`; resolve regressions found in this pass.
156. Knowledge/progress update: record concrete remediation facts and validation outcomes in `.codex/knowledge`, then update `WORK.md` progress/review notes.
157. Python-suite portability remediation: remove hard runtime dependency on `pytest` for `test-sqlite-provider-py` by adding an in-repo fallback test runner path.
158. Python-suite validation: run `make test-sqlite-provider-py` in this environment and ensure the fallback path executes all `tests/sqlite_provider_py/test_*.py` cases successfully.
159. Progress/knowledge follow-up: record the portability fix and validation evidence in `.codex/knowledge` and `WORK.md`.
160. New review request intake (2026-02-19): read `sqlite-provider.md` fully, re-read all runtime implementation files (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and test suites to establish current behavior before evaluating quality.
161. Knowledge refresh and gap check: read existing `.codex/knowledge` review/remediation notes, then verify whether prior findings are still applicable after recent fixes.
162. Design-conformance deep audit: map each design goal (simplicity, module boundaries, safety/lifetimes, extensibility, backend-agnostic SPI) to concrete code paths and identify discrepancies with file/line evidence.
163. Production-readiness audit: inspect hot paths for avoidable allocations/copies, resource-lifetime correctness, panic/FFI containment, and backward-compatibility implications of ABI/surface changes.
164. Test/documentation audit: verify coverage of critical paths and check public API rustdoc completeness/clarity against project standards.
165. Validation pass for review evidence: run current test/lint targets needed to support findings (`cargo test`, targeted workspace tests, and `cargo clippy --all-targets --all-features`) and capture any blockers precisely.
166. Deliver review artifact: write an updated `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, discrepancy summary, and explicit references.
167. Knowledge/progress follow-up: record concrete 2026-02-19 review facts in `.codex/knowledge` and update `WORK.md` progress/review notes.
168. Review-remediation intake (2026-02-19 follow-up): read updated `sqlite-provider-review.md`, re-read affected code paths, and define a fix sequence for all currently reported findings.
169. Lifetime-safety remediation module: tie extension handles (`CallbackHandle`, `Backup`, `Blob`) to connection borrows so they cannot outlive the originating connection(s).
170. Callback-drop safety module: avoid freeing callback state if unregister fails during `CallbackHandle` drop to prevent potential dangling callback pointers.
171. ABI ownership-semantics remediation: implement SQLite-compatible destructor handling for `sqlite3_bind_text/blob` and `sqlite3_result_text/blob` in `sqlite-provider-abi`.
172. Contract/documentation remediation: align `RawBytes` validity documentation with safe row API behavior and add concise docs for tricky ownership/lifetime paths touched in this pass.
173. Regression-test module: add targeted tests covering destructor-callback behavior and any new edge cases introduced by this remediation.
174. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
175. Knowledge/progress follow-up: record concrete remediation facts in `.codex/knowledge` and update `WORK.md` progress/review notes.
176. New review request intake (2026-02-19 latest pass): re-read `WORK.md`, `sqlite-provider.md`, and existing knowledge entries, then re-audit all implementation/test files for current behavior.
177. Design/quality audit: evaluate current code against standards (simplicity, module boundaries, API docs, critical test coverage, hot-path allocation/copy behavior, production readiness) and identify concrete discrepancies with file/line evidence.
178. Validation pass for review evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
179. Deliver refreshed review artifact: update `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, and discrepancy summary.
180. Knowledge capture: record concrete 2026-02-19 latest-pass review facts and code locations in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
181. Progress/review follow-up: update `WORK.md` Agent Work Progress and Review Notes with this pass results.
182. Review-fix intake (2026-02-19 user follow-up): read current `sqlite-provider-review.md`, re-open all impacted code paths (`src/connection.rs`, `tests/integration.rs`, `sqlite-provider.md`), and define a minimal remediation sequence.
183. Authorizer semantics remediation: correct `AuthorizerResult` code mapping to SQLite constants and make authorizer panic path fail-closed.
184. Authorizer regression tests: add concise tests that invoke the authorizer callback directly and verify `Ok`/`Ignore`/`Deny` numeric codes plus panic behavior.
185. Design-doc reconciliation: update `sqlite-provider.md` API/lifetime signatures to match implemented SPI (`open` with `OpenOptions`, `RawBytes` accessors, and row borrowing wording).
186. Validation pass for remediation evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
187. Review artifact refresh: update `sqlite-provider-review.md` so previously reported issues are closed and any residual gaps are clearly stated.
188. Knowledge/progress follow-up: update `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and `WORK.md` progress/review notes with concrete remediation facts and validation results.
189. New review request intake (2026-02-19 current pass): re-read `WORK.md`, `sqlite-provider.md`, and existing `.codex/knowledge` review/remediation notes; inventory all implementation and test files in the workspace.
190. Full implementation audit: read `src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, and Python/black-box test suites line-by-line; identify design/quality discrepancies with concrete file/line evidence.
191. Validation pass for review evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
192. Deliver refreshed review artifact: rewrite `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, discrepancy summary, and residual testing/documentation risks.
193. Knowledge/progress follow-up: update `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and `WORK.md` Review Notes with this pass outcomes.
194. New remediation intake (2026-02-19 review follow-up): read `sqlite-provider-review.md`, re-read impacted code in `sqlite-provider-sqlite3/src/lib.rs`, `src/vtab.rs`, and `src/value.rs`, and define a fix sequence for all listed residual findings.
195. Adapter singleton remediation: make `LibSqlite3::load()` return a stable process-wide cached adapter instance and avoid per-call leaked adapter allocations.
196. Virtual-table diagnostics remediation: propagate detailed create/connect failure messages through `out_err` when virtual-table connect or schema declaration fails.
197. Rustdoc coverage remediation: add concise public API docs for `Value`/`ValueRef` accessor methods flagged as undocumented.
198. Regression-test module: add focused tests for adapter singleton behavior and virtual-table `out_err` propagation paths.
199. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
200. Review artifact refresh: update `sqlite-provider-review.md` to reflect closure of all findings from this follow-up pass.
201. Knowledge/progress follow-up: record concrete code locations and validation outcomes in `.codex/knowledge`, then update `WORK.md` progress/review notes.
202. New review request intake (2026-02-19 deep re-audit): read `WORK.md`, existing `.codex/knowledge` notes, and `sqlite-provider.md` fully before evaluating implementation quality.
203. Full codebase review pass: re-read all implementation modules (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and test suites line-by-line; trace impact of each major unsafe/FFI/lifetime boundary.
204. Design-conformance and quality evaluation: compare implementation against design goals (simplicity, module boundaries, API docs, critical test coverage, hot-path allocation/copy behavior, and production readiness) and collect discrepancy evidence with file/line references.
205. Validation evidence pass: run the current regression/lint targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and Python/black-box suites) to verify reported findings against executable behavior.
206. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings, explicit discrepancy mapping to `sqlite-provider.md`, and an overall quality assessment.
207. Knowledge capture: update `.codex/knowledge/sqlite-provider-review-2026-02-19.md` with concrete facts from this new review pass.
208. Progress/review bookkeeping: mark task completion in `WORK.md` and append a dated Review Notes entry summarizing outcomes and validation status.
209. Review-fix intake (2026-02-19 current request): read `sqlite-provider-review.md`, map all five active findings to concrete code/test locations, and define an implementation/validation sequence.
210. Virtual-table allocator-contract remediation: add provider allocator hooks and route vtab `out_err` allocation through provider/SQLite-compatible allocation instead of Rust `CString::into_raw`.
211. ABI open-outparam remediation: set `*db_out = NULL` in `sqlite3_open_v2` immediately after validating `db_out`, and add a regression test that exercises error returns with initialized sentinel pointers.
212. Integration-flake remediation: serialize vtab panic/connect tests that mutate shared global toggles and reset shared state deterministically via a scoped guard.
213. ABI callback-name remediation: add deterministic fallback column-name generation when metadata SPI is unavailable (for `sqlite3_exec`, and align `sqlite3_get_table` name header behavior).
214. ABI threadsafe-reporting remediation: plumb provider-derived `sqlite3_threadsafe` capability through SPI/ABI and stop returning a hard-coded constant.
215. Regression-test module: update/add focused tests for allocator-backed `out_err` handling, open-outparam semantics, callback-name fallback, and provider-derived `sqlite3_threadsafe`.
216. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, plus make-target-equivalent black-box/Python commands.
217. Knowledge/progress follow-up: record concrete remediation facts in `.codex/knowledge` and append 2026-02-19 review-note evidence in `WORK.md`.
218. New review request intake (2026-02-19 design-doc conformance): read `WORK.md`, current `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing code.
219. Full implementation audit: read all runtime and test code (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, `tests/`, Python/black-box suites) end-to-end and trace key FFI/lifetime/ownership paths.
220. Design-goal assessment: evaluate simplicity, module boundaries, public API documentation coverage, critical test coverage, performance/allocation behavior in hot paths, and production readiness against `sqlite-provider.md`.
221. Discrepancy analysis: identify concrete mismatches or regressions between implementation and design document with file/line evidence and impact assessment.
222. Validation evidence pass: run full regression/lint suite (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, black-box/Python targets) and capture exact outcomes/blockers.
223. Review artifact delivery: write `sqlite-provider-review.md` with severity-ordered findings first, then assumptions/open questions, and a concise overall quality assessment.
224. Knowledge capture: record concrete facts discovered in this pass (including file locations and validation outputs) in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
225. Progress/review bookkeeping: mark plan items complete in `WORK.md` Agent Work Progress and append dated Review Notes summarizing this review pass.
226. Post-review remediation intake (2026-02-19 safety follow-up): map all active findings from `sqlite-provider-review.md` to concrete code/test changes and define a minimal fix sequence.
227. UDF alignment-safety remediation: remove implicit alignment assumptions in aggregate/window state storage (or make preconditions explicit/unsafe) and add concise safety docs for the chosen contract.
228. Regression coverage module: add targeted tests for over-aligned aggregate/window state handling and ensure behavior remains deterministic across providers.
229. Public API documentation remediation: add rustdoc comments for public `Error` constructors in `src/error.rs`.
230. Module-boundary follow-up: evaluate and implement a low-risk `connection` module split (core vs hooks/extensions) if it can be done without API breakage; otherwise record a concrete defer rationale.
231. Validation and bookkeeping: run regression/lint targets after follow-up changes, then update `.codex/knowledge` and `WORK.md` progress/review notes.
232. Remediation-verification intake (2026-02-19 latest request): read `sqlite-provider-review.md`, re-open all flagged code paths, and confirm whether each listed issue is still active.
233. Code-level closure check: verify aggregate/window alignment safety, `Error` rustdoc coverage, and `connection` module split implementation details against the review evidence.
234. Full validation rerun: execute `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
235. Bookkeeping update: record concrete verification facts in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and append this pass outcome in `WORK.md` progress/review notes.
236. New request intake (2026-02-19 review-fix confirmation): read current `sqlite-provider-review.md`, `WORK.md`, and existing `.codex/knowledge` entries to determine whether listed findings are still active.
237. Closure verification module: map each listed finding to current source/test evidence (`src/function.rs`, `src/error.rs`, `src/connection/*`, `tests/integration.rs`) and confirm remediation status.
238. Validation rerun: execute `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, plus make-target-equivalent ABI/Python commands.
239. Review artifact normalization: rewrite `sqlite-provider-review.md` so it reflects current active status (no stale open findings) and includes concrete fix evidence.
240. Knowledge/progress bookkeeping: append this pass facts to `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` progress/review notes.
241. New review request intake (2026-02-19 current pass): read `WORK.md`, existing `.codex/knowledge` entries, and `sqlite-provider.md`, then inventory all implementation/test files in the workspace.
242. Full implementation audit: re-read all runtime modules (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) plus Rust/Python test suites and trace FFI ownership/destructor semantics end-to-end.
243. Design/quality discrepancy analysis: evaluate implementation against standards (simplicity, module boundaries, docs, critical tests, hot-path allocation behavior, production readiness) and identify concrete mismatches with file/line evidence.
244. Validation evidence pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
245. Deliver review artifact: rewrite `sqlite-provider-review.md` with severity-ordered findings first, followed by assumptions/open questions, design-goal assessment, and discrepancy summary.
246. Knowledge capture: append concrete findings/validation evidence for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
247. Progress/review bookkeeping: update `WORK.md` Agent Work Progress and append a dated `Review Notes` entry with this pass outcome.
248. Follow-up verification: cross-check high-risk ABI semantics against real `libsqlite3` behavior with targeted local probes and include confirmed behavioral deltas in the review artifact.
249. Review artifact correction intake (2026-02-19 finalization): verify current `sqlite-provider-review.md` reflects latest audit findings and not stale remediation-only content.
250. Evidence revalidation: re-run targeted ctypes probes against both shim and system `libsqlite3` for blob-NULL semantics and capture exact numeric type outputs.
251. Delivery artifact rewrite: replace `sqlite-provider-review.md` with a severity-ordered review that includes standards assessment and explicit code/design references.
252. Knowledge/progress bookkeeping: append this finalization pass facts in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` progress/review notes.
253. Remediation intake (2026-02-19 fix request): read `sqlite-provider-review.md` and map each active finding to concrete code/doc changes and regression coverage.
254. ABI semantics remediation: make `sqlite3_bind_blob(NULL,...)` and `sqlite3_result_blob(NULL,...)` follow SQLite NULL semantics, then add focused regression tests.
255. Design-doc reconciliation: update `sqlite-provider.md` module-structure wording and document invalid-UTF8 text fallback behavior.
256. Validation pass: run `cargo fmt --all`, `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent Python/ABI commands.
257. Review artifact refresh: update `sqlite-provider-review.md` to remediation status (active findings closed with evidence).
258. Knowledge/progress bookkeeping: append concrete fix evidence in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` Review Notes.
259. New review intake (2026-02-19 detailed review request): re-read `WORK.md`, `sqlite-provider.md`, and existing `.codex/knowledge` entries; inventory all implementation and test files in the workspace.
260. Deep implementation audit module: read every runtime/test file (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, `tests/`, and Python suites), then record concrete behavior notes with code locations in `.codex/knowledge`.
261. Standards and design-conformance analysis: evaluate simplicity, module boundaries, public rustdoc coverage, critical test coverage, and hot-path allocation/copy behavior; identify severity-ordered discrepancies vs `sqlite-provider.md`.
262. Validation evidence refresh: execute `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands; capture exact blockers if any.
263. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then assumptions/open questions, and a concise overall quality assessment.
264. Bookkeeping closure: append this pass facts to `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, update `WORK.md` progress state, and add a dated `Review Notes` summary.
265. Review-remediation intake (2026-02-19 latest fix request): read `sqlite-provider-review.md` and map active findings (`sqlite3_get_table` multi-statement behavior + rustdoc gaps) to concrete code and test edits.
266. ABI behavior remediation: update `sqlite3_get_table` in `sqlite-provider-abi/src/lib.rs` to execute all SQL statements and aggregate row output with SQLite-compatible multi-statement semantics.
267. Regression coverage module: add focused tests proving `sqlite3_get_table` handles multi-statement scripts (including setup statements before `SELECT`) and preserves expected result-table layout.
268. Public API rustdoc remediation: add missing docs for `ValueRef::to_owned`, `AuthorizerAction::from_code`, and `AuthorizerResult::into_code`.
269. Validation pass: run targeted and broad checks (`cargo test -p sqlite-provider-abi`, `cargo test`, `cargo clippy --all-targets --all-features`) and resolve any regressions.
270. Knowledge capture: append concrete code/test facts and behavior notes to `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
271. Progress/review bookkeeping: mark completion in `WORK.md` Agent Work Progress and append a dated `Review Notes` entry for this remediation pass.
272. New review intake (2026-02-19 detailed design/implementation audit): re-read `WORK.md`, `sqlite-provider.md`, and existing `.codex/knowledge` entries; inventory all runtime/test files.
273. Deep implementation audit: re-read `src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, and Python suites; trace FFI/lifetime/ownership behavior end-to-end.
274. Validation evidence pass: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
275. Behavioral parity probe: compare shim vs system `libsqlite3` on high-risk ABI semantics with targeted ctypes scripts and capture exact outputs.
276. Deliver review artifact: rewrite `sqlite-provider-review.md` with severity-ordered findings first plus standards/design-goal assessment.
277. Knowledge/progress bookkeeping: append concrete findings and validation/probe evidence to `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` progress/review notes.
278. Review-fix intake (2026-02-19 current request): read current `sqlite-provider-review.md` and map each active finding to concrete ABI parser/test changes.
279. ABI splitter remediation: update `sqlite-provider-abi/src/lib.rs` statement splitting logic so trigger-body semicolons do not terminate statements prematurely.
280. Regression coverage remediation: add focused trigger-body tests for splitter/complete behavior and end-to-end prepare/exec/get_table flows.
281. Validation pass: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands after the fix.
282. Parity probe rerun: re-compare shim vs system `libsqlite3` trigger-script behavior via targeted ctypes script.
283. Bookkeeping refresh: update `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and `WORK.md` review notes with final closure evidence.
284. New review intake (2026-02-19 latest detailed audit request): read `WORK.md` Feature Request + existing plan/progress state, re-read `.codex/knowledge` entries, and read `sqlite-provider.md` fully before evaluation.
285. Deep implementation audit module: re-read all runtime files (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all test suites (`tests/`, `sqlite-provider-abi/tests/`, Python suites), tracing FFI ownership/lifetime/error paths end-to-end.
286. Standards/design-conformance analysis: evaluate simplicity, module boundaries, public API rustdoc coverage, critical-path test coverage, hot-path allocation/copy behavior, and production-readiness against `sqlite-provider.md`; record concrete discrepancy evidence with file/line references.
287. Validation evidence pass: run current validation targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands) and capture exact outcomes/blockers.
288. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, followed by assumptions/open questions, design-goal assessment, and discrepancy summary.
289. Knowledge capture: append concrete code facts and validation evidence for this pass into `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
290. Progress/review bookkeeping: update `WORK.md` Agent Work Progress and append a dated `Review Notes` entry summarizing this pass.
291. Post-completion engineering sweep: inspect current diff/workspace state after task closure, verify critical design components are still covered, and identify any additional production-quality improvements (or confirm none).
292. Follow-up recording: capture any newly discovered improvement items from the engineering sweep in `WORK.md` Agent Work Plan and track completion status.
293. ABI parity follow-up: align `sqlite3_complete` delimiter-only behavior with system `libsqlite3` semantics (`\";\"`, repeated semicolons, comment+semicolon) and add focused regression coverage.
294. Rustdoc polish follow-up: add field-level docs for public core API fields (`Error`, `ApiVersion`, `OpenOptions`) to improve generated API contract clarity.
295. Remediation intake (2026-02-19 current fix request): re-read `sqlite-provider-review.md`, map each active finding to concrete code/test edits, and confirm required validation scope.
296. ABI remediation module: update `sqlite3_complete` control flow to treat delimiter-only statements as complete when semicolon terminators are present, while preserving existing trigger-aware splitting behavior.
297. Regression coverage module: extend ABI tests with delimiter-only `sqlite3_complete` cases (`\";\"`, repeated semicolons, comment+semicolon) to lock compatibility behavior.
298. Rustdoc remediation module: add concise field-level docs for public `Error`, `ApiVersion`, and `OpenOptions` fields.
299. Validation pass: run cargo/package tests, clippy, ABI build, black-box Python, sqlite-provider Python suite, and targeted shim-vs-system parity probe for `sqlite3_complete`.
300. Bookkeeping closure: refresh `sqlite-provider-review.md` to reflect remediation status, append concrete facts in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and update `WORK.md` progress/review notes.
301. New review intake (2026-02-19 current detailed design-doc request): read `WORK.md` Feature Request/state, existing `.codex/knowledge` notes, and `sqlite-provider.md` completely before auditing.
302. Build a requirement-to-implementation traceability matrix from `sqlite-provider.md` (architecture, SPI, safety, UDF/vtab behavior, test expectations) to concrete code locations.
303. Core-crate deep audit: re-read every runtime module under `src/` and `tests/integration.rs` to assess simplicity, module boundaries, API docs, safety/lifetimes, and hot-path allocation/copy behavior.
304. ABI/adapter deep audit: re-read `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, ABI tests, and Python/black-box suites for C-API compatibility, ownership semantics, and regression risk.
305. Validation evidence refresh: run current verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, plus make-target-equivalent ABI/Python commands) and capture exact outcomes.
306. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then assumptions/open questions, design-goal assessment, discrepancy summary, and production-readiness verdict.
307. Knowledge capture: append concrete findings/evidence and code-location facts for this pass into `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
308. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry for this review pass.
309. Post-completion engineering sweep: inspect workspace diff against the traceability matrix and record any additional production-quality improvements (or confirm none) under Agent Work Plan.
310. Post-review remediation intake (2026-02-19 callback-abort follow-up): map the `sqlite3_exec` callback-abort errcode/errmsg parity mismatch to concrete ABI code paths and expected SQLite-compatible behavior.
311. ABI callback-abort remediation module: ensure callback-abort (`SQLITE_ABORT`) updates connection-visible error state/message and `err_out` text consistently with SQLite behavior.
312. Regression coverage module: add focused ABI tests (and optional parity probe harness assertions) for callback-abort semantics covering return code, `sqlite3_errcode`, and `sqlite3_errmsg`/`err_out`.
313. Validation and artifact refresh: run cargo/package tests plus black-box/Python commands and update `sqlite-provider-review.md`/knowledge once remediation is complete.
314. Design-doc SPI drift remediation: update `sqlite-provider.md` core `Sqlite3Api` listing so required `malloc`/`free` and `threadsafe` hooks are documented with concise safety semantics.
315. Bookkeeping completion: append concrete fix facts and validation outcomes in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and mark this request complete in `WORK.md` Review Notes.
316. New review intake (2026-02-19 current detailed review request): re-read `WORK.md`, current `.codex/knowledge` entries, and `sqlite-provider.md`; inventory all runtime and test files before evaluation.
317. Deep implementation audit: re-read `src/`, `src/connection/*`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust integration/ABI tests, and Python suites; map discrepancies against design goals.
318. Validation evidence pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
319. ABI parity probe module: run targeted shim-vs-system checks for high-risk text semantics (`sqlite3_bind_text`/`sqlite3_result_text` with invalid UTF-8 payloads) and capture exact outcomes.
320. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, discrepancy summary, and production-readiness verdict.
321. Knowledge capture: append concrete findings, file locations, probe evidence, and validation results to `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
322. Progress/review bookkeeping: update `WORK.md` Agent Work Progress and append a dated `Review Notes` entry for this pass.
323. Post-completion engineering sweep: compare current workspace state against the review findings and record any additional improvement opportunities (or explicitly confirm none).
324. Review-remediation intake (2026-02-19 follow-up): read active findings in `sqlite-provider-review.md`, re-open impacted ABI/SPI/wrapper code paths, and define a concrete fix sequence for all remaining issues.
325. SPI text-bytes extension module: add byte-oriented text hooks in `src/provider.rs` (with compatibility defaults) and wire object-safe `AbiCore` forwarding in `sqlite-provider-abi/src/lib.rs`.
326. sqlite3-adapter text parity module: implement byte-oriented text bind/result paths in `sqlite-provider-sqlite3/src/lib.rs` so invalid UTF-8 text payloads are forwarded without reinterpretation.
327. ABI entrypoint remediation module: update `sqlite3_bind_text` and `sqlite3_result_text` in `sqlite-provider-abi/src/lib.rs` to consume raw byte payloads and call the new text-byte SPI path while preserving destructor semantics.
328. ABI compatibility regression module: add focused tests proving invalid UTF-8 `sqlite3_bind_text` and `sqlite3_result_text` behavior matches SQLite expectations in current adapter-backed tests.
329. Optional-wrapper coverage module: extend `tests/integration.rs` mock backend with optional extension trait impls and add concise integration tests for `backup_to`, `open_blob`, WAL wrappers, and metadata wrappers (`table_column_metadata`, `column_*_raw`).
330. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features` after remediation.
331. Artifact/bookkeeping refresh: update `sqlite-provider-review.md`, append concrete remediation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and mark progress/review notes in `WORK.md`.
332. Post-remediation engineering sweep: inspect current diff for any additional production-quality follow-ups beyond the remediated findings (or explicitly confirm none).
333. New review intake (2026-02-19 current detailed implementation/design audit request): re-read `WORK.md` Feature Request, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before evaluating code quality.
334. Requirement traceability matrix: map each design-doc commitment (architecture, SPI surface, wrappers, UDF/vtab lifecycle, safety/performance goals, and testing expectations) to concrete implementation/test locations.
335. Runtime code deep audit: re-read every Rust implementation module in `src/` plus `sqlite-provider-sqlite3/src/lib.rs` and `sqlite-provider-abi/src/lib.rs`; check correctness, safety, boundary clarity, and hot-path allocation/copy behavior.
336. Test/doc coverage audit: re-read Rust integration/unit tests, ABI tests, and Python suites; verify critical-path coverage and public API rustdoc completeness against stated standards.
337. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands; capture blockers exactly if present.
338. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then open questions/assumptions, standards assessment, design-goal conformance summary, and production-readiness verdict.
339. Knowledge capture: append concrete findings and code-location facts for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
340. Progress/review bookkeeping + engineering sweep: update `WORK.md` statuses and dated Review Notes entry; after closing planned tasks, inspect current diffs for any additional production-quality improvements and record follow-up tasks if discovered.
341. ABI module-boundary remediation planning: decompose `sqlite-provider-abi/src/lib.rs` into focused modules (parser/splitter, registry/bootstrap, exports, helpers, tests) while preserving symbol behavior and minimizing regression risk.
342. Public API docs polish: add missing field-level rustdoc for public metadata/hook payload structs in `src/provider.rs` and `src/connection/hooks.rs`.
343. Design/implementation traceability sync: update `sqlite-provider.md` SPI sketch so it explicitly includes `prepare_v2`, `bind_text_bytes`, and `result_text_bytes`.
344. Follow-up verification module: rerun core validation commands and refresh `sqlite-provider-review.md`/knowledge once tasks 341-343 are complete.
345. New review intake (2026-02-19 current detailed design-doc implementation audit request): re-read `WORK.md`, `.codex/knowledge` review notes, and `sqlite-provider.md`, then verify current workspace review artifact state before auditing.
346. Deep implementation/parity audit: re-open core/ABI/adapter/test code paths with focus on SQLite C-API behavioral parity, and run targeted shim-vs-system probes for high-risk lifecycle semantics (`close_v2` and NULL-handle entrypoints).
347. Validation evidence refresh: run cargo/package tests, clippy, ABI build, black-box Python tests, and sqlite-provider Python fallback suite on current workspace state.
348. Review artifact + knowledge delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings and standards assessment, then append concrete facts/probe outputs/code locations in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
349. Progress/review bookkeeping: update `WORK.md` Agent Work Progress completion status and append dated `Review Notes` entry for this pass.
350. Remediation intake (2026-02-19 fix-all request): map active findings from `sqlite-provider-review.md` (`sqlite3_close_v2` lifecycle parity and NULL-handle cleanup semantics) to ABI implementation + regression-test changes.
351. ABI lifecycle remediation: implement SQLite-compatible `sqlite3_close_v2` zombie semantics (defer close until outstanding statements are finalized) without eagerly finalizing/freeing statement handles.
352. NULL-handle semantics remediation: align `sqlite3_close`, `sqlite3_close_v2`, `sqlite3_finalize`, and `sqlite3_reset` to return `SQLITE_OK` for null handles.
353. Regression coverage module: add focused ABI unit/e2e tests for deferred `close_v2` behavior and null-handle cleanup return codes.
354. Validation pass: run cargo tests, clippy, ABI build, and Python black-box/fallback suites on the remediated state.
355. Artifact refresh: update `sqlite-provider-review.md` to reflect remediation closure and any residual risks.
356. Knowledge/progress bookkeeping: append concrete remediation facts/validation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` Review Notes.
357. New review intake (2026-02-20 current request): read `WORK.md` Feature Request + Agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before evaluating implementation quality.
358. Full implementation audit: re-read all runtime modules (`src/`, `src/connection/*`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python test suites line-by-line; trace safety/FFI/ownership behavior and design-goal alignment with explicit evidence.
359. Standards-conformance analysis: evaluate simplicity, module boundaries, public rustdoc coverage, critical test coverage, performance/allocation behavior in hot paths, and production-readiness; identify severity-ordered discrepancies and backward-compatibility risks.
360. Validation evidence pass: run current verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands); capture blockers exactly if any.
361. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first structure (severity ordered), then assumptions/open questions, design-goal assessment, discrepancy summary, and overall readiness verdict.
362. Knowledge capture: append concrete findings, file locations, and validation outcomes for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-20.md` (new dated entry) and related knowledge files as needed.
363. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry summarizing this pass.
364. Post-completion engineering sweep: compare current workspace state and review findings to identify any additional production-quality follow-ups; record new actionable items in Agent Work Plan if discovered.
365. Remediation intake (2026-02-20 parity/doc follow-up): map active review findings to concrete ABI and documentation changes with minimal API-surface churn.
366. ABI version-query parity remediation: align `sqlite3_libversion` and `sqlite3_libversion_number` behavior with SQLite pre-initialization semantics.
367. Null-handle error-path parity remediation: align `sqlite3_errcode(NULL)`, `sqlite3_extended_errcode(NULL)`, and `sqlite3_errmsg(NULL)` behavior with system SQLite.
368. ABI helper parity remediation: align delimiter-only `sqlite3_prepare_v2` tail semantics and `sqlite3_errstr` text table outputs with SQLite-compatible behavior.
369. Public rustdoc coverage remediation: reduce missing-docs warnings on public API surface (`src/provider.rs`, `src/value.rs`, `src/connection/hooks.rs`, `src/vtab.rs`, related exports) without adding redundant comments.
370. Regression coverage module: add focused tests/probes for each parity remediation to lock behavior against future regressions.
371. Validation and artifact refresh: rerun cargo/clippy/ABI black-box/Python suites, refresh `sqlite-provider-review.md` and `.codex/knowledge`, and update `WORK.md` progress/review notes.
372. Post-remediation engineering sweep: inspect the final diff and re-check production-quality concerns (correctness/perf/readability/test coverage); record any additional follow-up tasks if discovered.
373. Panic-containment remediation intake (2026-02-20 follow-up): map the high-severity FFI panic-leak finding to concrete ABI-layer changes, identifying the narrowest place to enforce catch semantics across exported entrypoints.
374. ABI panic-shield implementation: add centralized `catch_unwind` guard helpers in `sqlite-provider-abi` object-safe provider adapters (`AbiCore`/`AbiHooks`/`AbiBackup`/`AbiBlobIo`/`AbiSerialize`/`AbiWal`/`AbiMetadata`/`AbiExtras`) so panics in backend provider implementations are converted to SQLite-compatible error/default returns instead of unwinding across FFI.
375. Regression coverage for panic containment: extend ABI tests with panic-in-provider scenarios (e.g., `open`, `errcode`) and assert exported C APIs return stable SQLite error codes while process/test execution continues.
376. Validation pass: run formatter, ABI/core/package tests, clippy, and make-target-equivalent black-box/Python suites to ensure panic-shield changes introduce no regressions.
377. Knowledge/artifact refresh: append concrete remediation evidence and code locations in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, and reconcile review output status.
378. Progress/review bookkeeping: mark completion status and append a dated `Review Notes` entry summarizing this panic-containment remediation pass.
382. New review intake (2026-02-20 current detailed design-doc implementation review request): re-read `WORK.md` Feature Request + agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
383. Requirement traceability refresh: map every active `sqlite-provider.md` design commitment (architecture, SPI, wrapper semantics, extension/vtab lifecycle, safety goals, and testing expectations) to concrete implementation/test locations.
384. Full codebase deep audit: re-read all runtime/test files (`src/`, `src/connection/*`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, `tests/`, `sqlite-provider-abi/tests/`, Python suites and test runner scripts) and trace FFI ownership/lifetime/error behavior end-to-end.
385. Standards/performance assessment: evaluate simplicity, module boundaries, rustdoc coverage on public APIs, critical-path test coverage, hot-path allocation/copy behavior, and backward-compatibility implications; rank discrepancies by severity.
386. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands; record exact outcomes and blockers.
387. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
388. Knowledge capture: append concrete findings, code locations, and validation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md` and related knowledge files as needed.
389. Progress/review bookkeeping: update `WORK.md` Agent Work Progress status entries and add a dated `Review Notes` summary for this pass.
390. Post-completion engineering sweep: inspect current workspace diffs against the traceability matrix and record any additional production-quality follow-up tasks (or explicitly confirm none).
391. Remediation intake (2026-02-20 fix-all request): map each active finding in `sqlite-provider-review.md` (ABI extras parity gap and public-doc suppressions) to concrete code/test/doc changes.
392. ABI extras parity remediation: implement `Sqlite3AbiExtras` in `sqlite-provider-sqlite3`, wire default backend registration to include `.with_extras(api)` in `sqlite-provider-abi/src/state.rs`, and keep behavior allocation-light.
393. Regression coverage for extras APIs: add focused ABI/default-backend tests validating `sqlite3_changes`, `sqlite3_total_changes`, `sqlite3_last_insert_rowid`, `sqlite3_stmt_readonly`, and bind-parameter helpers return backend values (not fallback defaults).
394. Public rustdoc remediation: remove remaining broad `#[allow(missing_docs)]` suppressions on public exported surfaces and add concise, non-redundant docs for affected items.
395. Validation pass: run formatter, cargo tests (workspace + package targets), clippy, rustdoc missing-docs check, and make-target-equivalent ABI/Python suites.
396. Review/knowledge refresh: update `sqlite-provider-review.md` and `.codex/knowledge/sqlite-provider-review-2026-02-20.md` to reflect remediation status and evidence.
397. Progress/review bookkeeping + engineering sweep: mark completion in `WORK.md`, append dated `Review Notes`, and record any further production-quality follow-ups if discovered.
398. New review intake (2026-02-20 current detailed implementation/design audit request): re-read `WORK.md` instructions, `sqlite-provider.md`, and existing `.codex/knowledge` review notes before evaluating current code.
399. Full implementation audit: re-read all runtime modules (`src/`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python test suites; map behavior against design goals and quality standards.
400. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, rustdoc missing-docs check, and make-target-equivalent ABI/Python commands on current workspace state.
401. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, followed by design-goal assessment, discrepancy summary, and production-readiness verdict.
402. Knowledge capture: append concrete code-location findings and validation results to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
403. Progress/review bookkeeping: update `WORK.md` Agent Work Progress completion entries and append a dated Review Notes summary for this pass.
404. Post-completion engineering sweep: review remaining diffs against the design traceability matrix and record any additional production-quality follow-up items (or explicitly confirm none).
405. Remediation intake (2026-02-20 fix-all from current review file): map each active finding in `sqlite-provider-review.md` to concrete code/test changes and validation expectations.
406. Public API docs remediation: remove broad `missing_docs` suppression from unsafe extension traits in `src/provider.rs` and add concise method-level rustdoc for required public unsafe SPI methods.
407. Keying-wrapper coverage remediation: extend `tests/integration.rs` mock backend with `Sqlite3Keying` behavior and add focused tests for `Connection::open_with_key` success + `rekey`, plus key-failure cleanup semantics.
408. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and `RUSTDOCFLAGS='-Wmissing-docs' cargo doc -p sqlite-provider --no-deps`.
409. Black-box validation pass: run `make test-abi-blackbox` and `make test-sqlite-provider-py` to confirm no ABI/Python regressions.
410. Review artifact refresh: update `sqlite-provider-review.md` to reflect remediation closure and any residual risks.
411. Knowledge capture: append concrete remediation facts and validation outputs to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
412. Progress/review bookkeeping + engineering sweep: mark completion in `WORK.md`, append dated Review Notes for this pass, and record any further production-quality follow-ups if discovered.
413. New review intake (2026-02-20 current detailed implementation/design audit request): re-read `WORK.md` instructions, existing `.codex/knowledge` review history, and `sqlite-provider.md` end-to-end before auditing.
414. Requirement traceability refresh: map each active `sqlite-provider.md` design goal (architecture, SPI, wrappers, UDF/vtab lifecycle, safety/performance targets) to concrete code and test locations across the workspace.
415. Full implementation/test deep audit: re-read all runtime and test modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, Python suites, scripts) and identify concrete discrepancies.
416. Standards/quality assessment: evaluate simplicity/module boundaries, public rustdoc coverage, critical-path tests, hot-path allocation/copy behavior, and backward-compatibility risks from current changes.
417. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, rustdoc missing-docs check, and make-target-equivalent ABI/Python commands; record exact outcomes/blockers.
418. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then assumptions/questions, design-goal conformance, discrepancy summary, and production-readiness verdict.
419. Knowledge capture: append concrete findings, code locations, and validation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
420. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress status, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-ups (or explicitly confirm none).
421. Remediation intake (2026-02-20 current request): read `sqlite-provider-review.md`, confirm active findings, and map the remaining issue to concrete code/doc/test changes.
422. ABI public-doc remediation module: add concise rustdoc coverage for `sqlite-provider-abi` public surfaces (object-safe SPI traits, provider-state builder APIs, and exported ABI entrypoints) sufficient to satisfy `-Wmissing-docs`.
423. Validation pass (docs + regressions): run `RUSTDOCFLAGS='-Wmissing-docs' cargo doc -p sqlite-provider-abi --no-deps` plus core regression targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands).
424. Review artifact refresh: update `sqlite-provider-review.md` to reflect closure of all active findings and residual risk status.
425. Knowledge/progress bookkeeping + engineering sweep: append concrete remediation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, mark completion in `WORK.md`, and record any additional production-quality follow-ups (or explicitly confirm none).
426. New review intake (2026-02-20 current detailed design-doc implementation review request): read `WORK.md` Feature Request + instructions, review existing `.codex/knowledge` entries, and read `sqlite-provider.md` completely before auditing.
427. Requirement traceability refresh: map each active design commitment in `sqlite-provider.md` (architecture, SPI, wrappers, UDF/vtab lifecycle, safety/performance goals) to concrete implementation and test locations.
428. Full implementation/test deep audit: re-read runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and Rust/Python test suites end-to-end; record concrete discrepancy candidates with file/line evidence.
429. Validation evidence refresh: run current regression/lint/doc targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, rustdoc missing-docs checks, and make-target-equivalent ABI/Python commands) and capture exact outcomes/blockers.
430. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then assumptions/open questions, standards/design-goal conformance summary, discrepancy list, and production-readiness assessment.
431. Knowledge capture: append concrete findings, traceability notes, and validation outputs in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
432. Progress/review bookkeeping + engineering sweep: mark completion in `WORK.md`, append dated `Review Notes`, and record any additional production-quality follow-ups discovered after comparing final diffs to the traceability matrix.
433. Post-review follow-up intake (new task): map the low-severity safety-surface gap (`Connection::progress_handler` public `unsafe`) to a concrete safe-wrapper design that preserves existing callback ABI compatibility.
434. Safe API remediation module (new task): add a safe progress-handler registration API with RAII-managed callback state and deterministic unregister semantics.
435. Regression coverage module (new task): add concise tests for progress-handler registration/unregistration and failure-path cleanup.
436. Validation and bookkeeping (new task): run cargo/package/lint/doc/ABI-Python targets after progress-handler follow-up and update review/knowledge artifacts accordingly.
437. New review intake (2026-02-20 current request): read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before starting the implementation review.
438. Requirement traceability refresh: map each design goal in `sqlite-provider.md` (architecture, SPI, safety/lifetimes, UDF/vtab lifecycle, extension surfaces, and performance expectations) to concrete runtime/test code locations.
439. Full implementation/test deep audit: re-read all workspace runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and Rust/Python tests end-to-end; capture discrepancies with file/line evidence.
440. Standards assessment and risk ranking: evaluate simplicity, module boundaries, public rustdoc coverage, critical-path test coverage, hot-path allocation/copy behavior, and compatibility risks; rank findings by severity.
441. Validation evidence refresh: run regression/lint/doc targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and record exact outcomes.
442. Review artifact delivery: write `sqlite-provider-review.md` with findings-first ordering, discrepancy mapping against `sqlite-provider.md`, and an overall production-readiness assessment.
443. Knowledge capture: append concrete review facts and code locations to `.codex/knowledge/sqlite-provider-review-2026-02-20.md` and any related knowledge files used in this pass.
444. Progress/review bookkeeping + engineering sweep: mark task completion in `WORK.md`, append dated `Review Notes`, and record any additional follow-up tasks if discovered during final diff inspection.
445. Post-review remediation intake (new follow-up task): map each active finding from `sqlite-provider-review.md` to concrete ABI/adapter code paths and define minimal-risk fix ordering.
446. Adapter bind-error safety remediation (new follow-up task): remove duplicate frees in `sqlite-provider-sqlite3` bind error paths so SQLite-owned destructor contracts are respected and crash risk is eliminated.
447. ABI context-handle parity remediation (new follow-up task): make `sqlite3_context_db_handle` return a valid shim `sqlite3*` handle (not backend-private pointer), with clear ownership/lifetime rules.
448. ABI `sqlite3_malloc64` contract remediation (new follow-up task): correct 64-bit size handling/signature and add overflow/large-size parity tests against system SQLite behavior.
449. ABI `sqlite3_sleep` parity remediation (new follow-up task): align exported function signature/return semantics with SQLite (`int` elapsed milliseconds) and add black-box coverage.
450. Regression + validation follow-up (new follow-up task): add targeted crash/parity tests for tasks 446-449, rerun full validation suite, and refresh review/knowledge artifacts.
451. Post-remediation engineering sweep (new follow-up task): inspect final diffs against design constraints (simplicity, module boundaries, hot-path allocation behavior, ABI compatibility risk) and record any additional improvements or confirm none.
452. New review intake (2026-02-20 current user request): read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing implementation.
453. Requirement traceability refresh: map design commitments from `sqlite-provider.md` (architecture, safety/performance goals, SPI/extension coverage, UDF/vtab lifecycle) to concrete implementation/test locations.
454. Full runtime/test audit: re-read all implementation and test files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, Python suites, scripts) and capture concrete discrepancy candidates with file/line evidence.
455. Standards assessment: evaluate simplicity/module boundaries, public rustdoc coverage, critical-path test coverage, hot-path allocation/copy behavior, and backward-compatibility impact for any ABI/file-format-relevant changes.
456. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python commands.
457. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
458. Knowledge capture: append detailed facts (code locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
459. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry for this pass.
460. Post-completion engineering sweep: inspect final workspace state against design constraints and record any additional production-quality follow-ups (or explicitly confirm none).
461. Review-fix intake (2026-02-20 current request): map active findings from `sqlite-provider-review.md` to concrete ABI/header code paths and define a minimal-risk remediation sequence.
462. Callback-signature hardening module: replace erased `extern \"C\" fn()` ABI callback parameters/transmutes with exact callback signatures in `sqlite-provider-abi/src/exports.rs` and `sqlite3.h`.
463. Allocator-contract remediation module: extend ABI core object-safe trait surface with allocator hooks and route `sqlite3_malloc64`/`sqlite3_free` through provider allocators when available, with deterministic fallback policy.
464. Allocator-ownership tracking module: add pointer-ownership bookkeeping in ABI state so `sqlite3_free` can dispatch to the correct deallocator (`provider.free` vs libc) without ambiguity for shim-allocated buffers.
465. Regression coverage module: update/add focused tests for typed callback registration call paths and provider-allocator usage in `sqlite-provider-abi` unit/end-to-end suites.
466. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
467. Review artifact + knowledge refresh: update `sqlite-provider-review.md` to close remediated findings and append concrete implementation/validation facts to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
468. Progress/review bookkeeping + engineering sweep: mark completion status for this follow-up in `WORK.md`, append a dated `Review Notes` entry, and record any additional production-quality follow-ups (or explicitly confirm none).
469. New review intake (2026-02-20 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
470. Full implementation + standards audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and test suites; evaluate simplicity, module boundaries, docs, critical-path coverage, and hot-path behavior with explicit evidence.
471. Validation and parity evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make`-based Python suites, and targeted shim-vs-system parity probes for any suspected ABI gaps.
472. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings, design-goal/discrepancy assessment, and production-readiness verdict.
473. Knowledge/progress bookkeeping: append concrete findings and validation facts to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, and update `WORK.md` Agent Work Progress / Review Notes.
474. Post-completion engineering sweep: compare final findings against current diffs and record any additional production-quality follow-ups (or explicitly confirm none).
475. Review-fix intake (2026-02-20 current request): read active findings in `sqlite-provider-review.md` and map each remaining issue to concrete SPI/ABI/adapter code paths.
476. Collation API remediation module: implement `sqlite3_create_collation_v2` through provider SPI + ABI object-safe core + exported entrypoint, preserving SQLite callback signatures and ownership semantics.
477. Adapter/backend wiring module: add dynamic `sqlite3_create_collation_v2` symbol loading/forwarding in `sqlite-provider-sqlite3` and synchronize local `sqlite3.h` declaration.
478. Regression coverage module: add focused ABI end-to-end and black-box tests proving collation registration works and affects ordering as expected.
479. Validation + parity verification: run formatter, cargo/package tests, clippy, strict rustdoc checks, make-based suites, and a direct shim-vs-system `sqlite3_create_collation_v2` probe.
480. Artifact/knowledge/progress refresh: update `sqlite-provider-review.md`, append concrete remediation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, and record completion in `WORK.md` Review Notes.
481. Post-completion engineering sweep: inspect final diffs for any additional production-quality follow-ups (or explicitly confirm none).
482. New review intake (2026-02-20 current detailed implementation/design audit request): re-read `WORK.md` instructions, existing `.codex/knowledge` review history, and `sqlite-provider.md` completely before auditing.
483. Requirement traceability refresh: map each active design commitment in `sqlite-provider.md` (architecture, SPI wrappers, safety/lifetime expectations, extension/vtab lifecycle, and performance goals) to concrete implementation/test locations.
484. Full implementation/test deep audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python test suites line-by-line; trace ownership, panic containment, and ABI parity-sensitive paths end-to-end.
485. Standards and discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical test coverage, hot-path allocation/copy behavior, and backward-compatibility implications; rank discrepancies by severity with file/line evidence.
486. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python suites.
487. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity ordered), then assumptions/open questions, design-goal assessment, discrepancy summary, and production-readiness verdict.
488. Knowledge capture: append concrete findings, code locations, and validation/parity outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
489. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated `Review Notes` entry for this pass.
490. Post-completion engineering sweep: inspect current workspace diffs against design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
501. New review intake (2026-02-20 current detailed design-doc implementation review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
502. Requirement traceability refresh: map active `sqlite-provider.md` commitments (architecture, SPI + extensions, wrapper lifetimes, UDF/vtab safety, and performance goals) to concrete implementation/test locations.
503. Full implementation/test deep audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python suites end-to-end; identify concrete discrepancies with file/line evidence.
504. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python commands on current workspace state.
505. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then standards/design-goal assessment, discrepancy summary, and overall production-readiness verdict.
506. Knowledge capture: append concrete findings, code locations, and validation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
507. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry for this pass.
508. Post-completion engineering sweep: compare final findings to current diffs and record additional production-quality follow-up tasks (or explicitly confirm none).
509. Follow-up remediation intake (new task from this review): map ABI test-race finding (`sqlite-provider-abi/src/tests.rs` panic toggles vs `register_and_open`) to a deterministic test-isolation fix plan.
510. Test-stability remediation module (new task): remove panic-toggle race in ABI unit tests by serializing affected tests or replacing global toggles with scoped per-test injection.
511. Review verification intake (2026-02-20 current handoff): re-read `WORK.md` instructions, existing `.codex/knowledge` review facts, and `sqlite-provider.md` fully before finalizing the review artifact status.
512. Active-finding revalidation: re-open `sqlite-provider-abi/src/tests.rs` panic-toggle and `register_and_open` paths and confirm race preconditions still exist with current line-level evidence.
513. Flake-stability check: run repeated `cargo test -p sqlite-provider-abi` loops to measure immediate reproducibility of the race and capture exact outcomes.
514. Sanity sweep: scan runtime/ABI/adapter code for obvious unresolved stubs/doc suppressions (`SQLITE_MISUSE` placeholders, `allow(missing_docs)`, TODO/unimplemented) that could invalidate the review summary.
515. Review artifact refresh: update `sqlite-provider-review.md` if new evidence changes severity/impact framing; otherwise keep findings unchanged and record verification evidence.
516. Knowledge capture: append concrete 2026-02-20 verification facts (commands, outcomes, code locations) to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
517. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated Review Notes entry for this verification pass.
518. Review-fix intake (2026-02-20 current request): map the active ABI race finding in `sqlite-provider-review.md` to concrete test-isolation edits in `sqlite-provider-abi/src/tests.rs`.
519. Test-isolation remediation module: serialize `register_and_open` with the panic-toggle lock and add scoped panic-toggle reset guards so panic flags are always restored.
520. Stability validation module: run repeated `cargo test -p sqlite-provider-abi` loops to confirm nondeterminism is removed in practice.
521. Regression validation module: run broader regression checks (`cargo test`, package tests, clippy, and make-target-equivalent suites as needed) after the test fix.
522. Artifact refresh: update `sqlite-provider-review.md` and `.codex/knowledge/sqlite-provider-review-2026-02-20.md` to close remediated findings with evidence.
523. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated Review Notes entry for this remediation pass.
524. New review intake (2026-02-20 current detailed design-doc implementation review request): re-read `WORK.md` instructions, existing `.codex/knowledge` review artifacts, and `sqlite-provider.md` completely before auditing.
525. Full implementation/test audit: re-read all runtime and test code (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, Python suites, and scripts) and trace design-goal conformance with concrete file/line evidence.
526. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core/ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
527. Discrepancy assessment: evaluate simplicity/module boundaries/docs/test coverage/hot-path behavior and identify active design or production-readiness gaps with severity ranking.
528. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
529. Knowledge capture: append concrete findings, code locations, and validation outputs for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
530. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated `Review Notes` entry for this pass.
531. Post-completion engineering sweep: inspect current workspace diffs against design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
532. New review intake (2026-02-20 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
533. Callback-safety discrepancy audit: trace progress-handler callback flow across core/SPI/adapter/ABI layers, verify panic-containment behavior against `sqlite-provider.md` requirements, and capture concrete file/line evidence.
534. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core/ABI crates, and make-target-equivalent ABI/Python suites.
535. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
536. Knowledge capture: append this pass facts (scope, finding evidence, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
537. Progress/review bookkeeping + engineering sweep: update `WORK.md` Agent Work Progress statuses, append a dated `Review Notes` entry for this pass, and record any extra follow-up tasks (or explicitly none).
538. Review-fix intake (2026-02-20 current request): map the active progress-callback panic-safety finding from `sqlite-provider-review.md` to concrete code/test updates across core/SPI/adapter/ABI layers.
539. Progress-callback safety remediation module: add panic-contained progress trampoline/state in `src/connection/hooks.rs`, switch safe API registration to closure-based routing, and retain raw callback path only as explicitly unsafe.
540. Signature-alignment remediation module: update progress callback signature to context-aware form (`int (*)(void*)`) across `src/provider.rs`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-abi/src/exports.rs`, `sqlite-provider-sqlite3/src/lib.rs`, and `sqlite3.h`.
541. Regression coverage module: update/add integration tests for progress registration/unregistration and panic containment behavior.
542. Validation pass: run formatter, cargo/package tests, clippy, strict rustdoc checks for core+ABI crates, and make-target-equivalent ABI/Python suites.
543. Artifact/knowledge/progress refresh + engineering sweep: update `sqlite-provider-review.md`, append remediation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, mark progress completion in `WORK.md`, and record whether any additional follow-up tasks remain.
544. New review intake (2026-02-21 current detailed implementation/design review request): re-read `WORK.md` Feature Request + agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
545. Requirement traceability refresh: map each `sqlite-provider.md` commitment (architecture, SPI boundaries, safety/panic constraints, wrapper lifetimes, optional extension behavior, and performance goals) to concrete implementation/test locations.
546. Full implementation/test deep audit: re-read all runtime and test modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust integration/unit tests, Python suites, and scripts) and identify concrete discrepancies with file/line evidence.
547. Standards assessment: evaluate simplicity, module single-responsibility boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and any compatibility impact from current API/ABI surfaces.
548. Validation evidence refresh: run current verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
549. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), followed by assumptions/open questions, design-goal conformance summary, discrepancy list, and production-readiness verdict.
550. Knowledge capture: append concrete findings, code locations, and validation outputs for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-21.md` (new dated entry) and related knowledge files if needed.
551. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated `Review Notes` entry summarizing this pass.
552. Post-completion engineering sweep: compare final review findings with current workspace diffs and design traceability, then record any additional production-quality follow-up tasks (or explicitly confirm none).
553. Review-fix intake (2026-02-21 follow-up from current review): map the progress-callback panic fail-open discrepancy to concrete core/adapter/test changes.
554. Progress-callback failure-mode remediation: update `src/connection/hooks.rs` panic path so the safe progress trampoline interrupts execution (non-zero return) and align docs/comments with SQLite semantics.
555. Regression coverage remediation: update/add integration tests in `tests/integration.rs` to assert panic in safe progress callbacks yields interrupt semantics rather than continue semantics.
556. Validation pass for remediation: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python suites.
557. Artifact/knowledge/progress refresh: update `sqlite-provider-review.md`, append remediation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and update `WORK.md` statuses/review notes.
558. New review intake (2026-02-21 current user request): re-read `WORK.md` Feature Request + instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
559. Requirement-to-code traceability matrix refresh: map every design commitment in `sqlite-provider.md` (architecture, SPI boundaries, wrapper safety/lifetimes, extension framework, vtab lifecycle/safety, and performance goals) to concrete source/test locations.
560. Full codebase deep-read audit: read all implementation and test files end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust/Python/black-box tests, scripts) and capture severity-ranked issues with concrete line-level evidence.
561. Standards assessment pass: evaluate simplicity, single-responsibility module boundaries, rustdoc coverage for public APIs, critical-path test sufficiency, hot-path allocation/copy behavior, and compatibility implications of current API/ABI behavior.
562. Validation evidence refresh: run verification targets (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and record exact outcomes/blockers.
563. Review artifact delivery: write a refreshed `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), followed by assumptions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
564. Knowledge capture: append concrete review facts, file locations, and validation outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-21.md` (and related knowledge files if needed).
565. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses and append a dated `Review Notes` entry; then compare findings against workspace diffs/design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
566. Follow-up remediation task (from 2026-02-21 review): reconcile `sqlite-provider.md` virtual-table trait signatures with the current provider-generic public API (`VirtualTable<P>`, `VTabCursor<P>`) and typed error mapping.
567. Follow-up engineering task (from 2026-02-21 review): refactor `sqlite-provider-sqlite3/src/lib.rs` into smaller modules (loader/symbol table, core SPI impl, optional extension impls) to improve single-responsibility boundaries and maintainability while preserving behavior.
568. Validation/closure pass for follow-up tasks `566-567`: rerun targeted and full validation commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and confirm no regressions after the adapter module split.
569. Knowledge/progress closure: update `.codex/knowledge` entries with exact code locations for the adapter module split and append a dated `Review Notes` entry summarizing remediation completion status and any further follow-up items (or explicitly none).
570. New review intake (2026-02-21 current request): re-read `WORK.md` Feature Request + agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
571. Requirement-to-code traceability refresh: map all design commitments in `sqlite-provider.md` (architecture, SPI boundaries, safety/lifetimes, extension framework, virtual-table lifecycle, and performance goals) to concrete source/test locations.
572. Full implementation/test deep audit: re-read all runtime/test modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust integration/unit tests, Python suites, scripts) and identify concrete issues with file/line evidence.
573. Standards assessment pass: evaluate simplicity, single-responsibility module boundaries, public API documentation coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and compatibility implications.
574. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`; capture exact outcomes/blockers.
575. Review artifact delivery: write refreshed `sqlite-provider-review.md` with findings-first ordering (severity-ranked, file/line referenced), then assumptions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
576. Knowledge capture: append concrete 2026-02-21 review facts, code locations, and validation outputs to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
577. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses and append a dated `Review Notes` entry; then inspect final diffs/traceability and record any new production-quality follow-up tasks (or explicitly confirm none).
578. Follow-up remediation intake (from current review): map the remaining ABI/header compatibility findings (`sqlite3_progress_handler` prototype drift and `sqlite3_context_db_handle` header type drift) to concrete export/header updates.
579. ABI signature-compat remediation: align `sqlite3_progress_handler` to canonical SQLite prototype compatibility in `sqlite-provider-abi/src/exports.rs` and `sqlite3.h`, including any required trait/signature plumbing updates across ABI/adapter/core layers.
580. Header type-compat remediation: align local `sqlite3.h` declaration for `sqlite3_context_db_handle` to `sqlite3 *` and verify no call-site/type regressions in C-ABI tests.
581. Closure validation + artifact refresh: rerun targeted/full validation commands, then refresh `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and `WORK.md` statuses/review notes for remediation outcome.
582. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
583. Scope/delta framing: compare prior 2026-02-21 review conclusions against current workspace files to avoid stale findings and identify areas needing re-verification.
584. Full implementation deep-read: re-read all code and tests end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, Python suites, scripts) and trace unsafe/lifetime/ownership boundaries.
585. Standards/design-conformance assessment: evaluate simplicity, module responsibilities, public API docs, critical-path tests, hot-path allocation/copy behavior, and design-goal alignment with `sqlite-provider.md`; capture discrepancy evidence with file/line references.
586. Validation evidence refresh: run the current verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc for core+ABI crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
587. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity-ranked), then assumptions/open questions, standards/design-goal assessment, and production-readiness verdict.
588. Knowledge capture: append concrete findings, code locations, and validation outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
589. Progress/review bookkeeping + engineering sweep: update `WORK.md` statuses and append a dated `Review Notes` entry summarizing outcomes and any newly discovered follow-up work (or explicitly none).
590. Follow-up remediation intake (from current review): map the remaining ABI unit-test nondeterminism (`sqlite-provider-abi/src/tests.rs` panic toggles) to a deterministic isolation strategy that preserves existing panic-containment assertions.
591. ABI test-isolation remediation: remove shared-toggle race windows by serializing all panic-toggle-sensitive tests (or replacing global toggles with scoped injection), while keeping test intent concise and readable.
592. Validation pass for remediation: rerun `cargo test -p sqlite-provider-abi` with repeated-loop stress plus full workspace verification targets to confirm flake elimination without regressions.
593. Artifact/knowledge closure for remediation: refresh `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and `WORK.md` statuses/review notes with concrete evidence.
594. New review intake (2026-02-21 current request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
595. Design traceability refresh: map each design commitment in `sqlite-provider.md` (architecture, SPI abstraction, safety/lifetime contracts, extension/vtab behavior, and performance goals) to concrete source/test locations in current workspace.
596. Full implementation deep-read audit: re-read all current runtime/test files end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust tests, Python suites, scripts) and identify discrepancies or risks with line-level evidence.
597. Standards assessment pass: evaluate simplicity, module responsibility boundaries, public API documentation quality, critical-path test coverage, and hot-path allocation/copy behavior for production readiness.
598. Validation evidence refresh: run the verification suite (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact results/blockers.
599. Review artifact delivery: write refreshed `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), followed by assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
600. Knowledge capture: append concrete 2026-02-21 review facts (code locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
601. Progress/review bookkeeping + engineering sweep: mark task statuses in `WORK.md`, append a dated `Review Notes` entry, and record any additional production-quality follow-up tasks discovered (or explicitly confirm none).
602. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` review artifacts, and `sqlite-provider.md` completely before auditing.
603. Requirement traceability refresh: map `sqlite-provider.md` commitments (architecture, SPI abstraction, lifetimes/safety, extension/vtab lifecycle, performance expectations) to concrete implementation/test locations.
604. Full implementation deep audit: re-read runtime and test code end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust/Python suites, scripts) and capture discrepancies with line-level evidence.
605. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core/ABI crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
606. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity-ranked, file/line referenced), then assumptions/open questions, standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
607. Knowledge capture: append concrete 2026-02-21 review facts (code locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
608. Progress/review bookkeeping + engineering sweep: mark tasks `602-607` complete in `WORK.md`, append a dated `Review Notes` entry, and record any follow-up production-quality tasks (or explicitly confirm none).
609. Follow-up remediation intake (from current review): map remaining runtime-vs-header ABI compatibility mismatches (`sqlite3_create_function_v2`/`sqlite3_create_window_function` destroy callback type and `sqlite3_free_table` pointer depth) to concrete edits.
610. Runtime ABI parity remediation: align export/SPI/adapter signatures for UDF/window destroy callbacks and `sqlite3_free_table` with canonical `sqlite3.h` declarations.
611. Compatibility coverage pass: add/update targeted ABI tests (or compile-level checks) to ensure exported symbol signatures stay consistent with canonical `sqlite3.h`.
612. Remediation closure: rerun validation targets and refresh `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and `WORK.md` progress/review notes.
613. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` artifacts, and full `sqlite-provider.md` before evaluating implementation quality.
614. Requirement traceability refresh: map design commitments in `sqlite-provider.md` (architecture, SPI boundaries, wrapper safety/lifetimes, extension framework, virtual-table lifecycle, and performance goals) to concrete implementation/test locations.
615. Full implementation deep audit: re-read all runtime/test files end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust/Python test suites, scripts) and capture concrete discrepancies with line-level evidence.
616. Standards and production-readiness assessment: evaluate simplicity, module single-responsibility boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and backward-compatibility implications.
617. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
618. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity-ranked with file/line references), followed by assumptions/open questions, design-goal assessment, discrepancy summary, and production-readiness verdict.
619. Knowledge capture: append concrete review facts, code locations, and validation outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
620. Progress/review bookkeeping + engineering sweep: update `WORK.md` statuses and append a dated `Review Notes` entry, then record any additional production-quality follow-up tasks (or explicitly confirm none).
621. New remediation intake (current request): read `sqlite-provider-review.md` residual-risk items and map them to concrete implementation changes (pytest removal and parser-coverage hardening).
622. Pytest-elimination module: remove runtime and test-source dependencies on `pytest` in `scripts/run_sqlite_provider_py.py` and `tests/sqlite_provider_py/*.py`, while preserving current scenario behavior and skip/exception semantics.
623. Test-harness cleanup module: provide explicit in-repo skip signaling utilities in `tests/sqlite_provider_py/conftest.py` and make the Python suite runner strictly standalone (no import/probe of pytest).
624. Parser-risk mitigation module: expand SQL parser compatibility coverage with additional trigger/CASE/nested-BEGIN regression tests in ABI unit/mock/e2e suites.
625. Validation pass: rerun full verification (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) after remediation.
626. Artifact refresh: update `sqlite-provider-review.md` to reflect closure of residual review issues and current no-dependency Python-test execution model.
627. Knowledge/progress closure: append concrete remediation facts to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, mark progress items complete, and add a dated `Review Notes` entry.
628. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` fully before auditing.
629. Requirement traceability refresh: map current design commitments (architecture, SPI boundaries, wrapper safety/lifetimes, extension/vtab lifecycle, panic containment, performance goals) to concrete implementation/test locations.
630. Full implementation deep audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`) and all Rust/Python test suites end-to-end; capture discrepancy candidates with line-level evidence.
631. Standards and quality assessment: evaluate simplicity, module responsibility boundaries, public API rustdoc coverage, critical-path tests, hot-path allocation/copy behavior, and backward-compatibility impact.
632. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
633. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity-ranked with file/line references), then assumptions/open questions, standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
634. Knowledge capture: append concrete 2026-02-21 review facts (scope, file locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
635. Progress/review bookkeeping: update `WORK.md` progress statuses and append a dated `Review Notes` entry for this pass.
636. Post-completion engineering sweep: compare findings against current workspace diffs/design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
637. Follow-up hardening intake (from 2026-02-21 review finding): map SPI ownership-contract ambiguity for UDF `user_data` teardown to concrete documentation/test updates.
638. SPI contract documentation module: add explicit ownership/teardown semantics for `create_function_v2` and `create_window_function` (`user_data` transfer and `drop_user_data` exactly-once expectations) in public trait docs.
639. Regression-test module: add a failing-provider registration test path validating deterministic callback-state cleanup behavior for UDF/window registration failure.
640. Follow-up validation + artifact refresh: rerun targeted/full validation and refresh review/knowledge artifacts after hardening changes.
641. Pytest-dependency elimination verification: re-scan executable test/harness paths and build orchestration to confirm zero runtime dependence on `pytest` remains.
642. Pytest cleanup module (if needed): remove any residual executable references/imports to `pytest` and keep standalone Python test runner flow intact.
643. Final validation and artifact closure: rerun impacted targets and update review/knowledge/progress notes for this fix-all request.
647. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` review history, and `sqlite-provider.md` completely before auditing current implementation quality.
648. Full implementation deep audit + traceability refresh: re-read all core/ABI/adapter/runtime test files end-to-end and map design commitments to concrete code locations, including unsafe ownership/lifetime boundaries.
649. Discrepancy reproduction module: run focused runtime probes for suspected parity/safety gaps (`sqlite3_complete` vs system sqlite, `sqlite3_free_table` repeat-free behavior, and UDF registration failure-path ownership semantics).
650. Standards and production-readiness assessment: evaluate simplicity/module boundaries, API documentation coverage, critical-path tests, hot-path allocation/copy behavior, and backward-compatibility impact.
651. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity-ranked with file/line evidence), followed by design-goal conformance and production-readiness verdict.
652. Knowledge capture: append concrete 2026-02-21 review facts (scope, file references, repro evidence, validation observations) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
653. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses and `Review Notes`, then record any additional production-quality follow-up work discovered in this pass.
654. Fix-all intake (current request): re-read `sqlite-provider-review.md` and map each active finding to concrete code/test changes across ABI parser/exports and sqlite3 adapter ownership paths.
655. ABI safety remediation: make `sqlite3_free_table` idempotent for repeated calls on the same variable by clearing the caller-owned table pointer after release.
656. Parser parity remediation: harden trigger-statement splitting/completion so malformed trigger text without `END;` terminator boundary is marked incomplete like system sqlite.
657. Ownership-contract remediation: ensure sqlite3 adapter registration pre-validation failures (interior NUL and unsupported window registration) invoke `drop_user_data` exactly once before returning `Err`.
658. Regression coverage module: add/update focused tests for (a) `sqlite3_free_table` repeated-call safety, (b) malformed-trigger `sqlite3_complete` behavior, and (c) adapter failure-path user-data cleanup.
659. Pytest elimination sweep: remove any remaining executable/runtime dependency on `pytest` in build/test runners and Python test paths, and verify repository runtime paths do not invoke/import pytest.
660. Validation pass: run required verification (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`).
661. Artifact refresh: update `sqlite-provider-review.md` to reflect remediation status and current active-findings verdict.
662. Knowledge/progress closure: append concrete remediation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, mark `WORK.md` progress entries complete, and add a dated `Review Notes` summary.
663. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and full `sqlite-provider.md` before auditing.
664. Complete deep-read scope closure: read all remaining pending runtime-test files and re-verify high-risk ABI ownership/destructor code paths with concrete line-level inspection.
665. Parity verification module: run focused system-`libsqlite3` differential probes for null-pointer destructor behavior to confirm/deny suspected ABI mismatches before reporting findings.
666. Full validation evidence refresh: run required verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes.
667. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering, standards/design-goal assessment, discrepancy summary, validation evidence, and production-readiness verdict.
668. Knowledge capture: append concrete 2026-02-21 review-pass facts (scope, probe outcomes, file locations, and command results) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
669. Progress/review bookkeeping: mark plan items `663-668` complete in `WORK.md` and append a dated `Review Notes` summary for this pass.
670. Post-completion engineering sweep: compare review outcome against current workspace state and record whether any additional production-quality follow-up tasks remain.
671. New review intake (2026-02-21 current detailed design-doc implementation review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
672. Full implementation and test deep-read audit: inspect all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`) with line-level traceability to design commitments.
673. Standards and discrepancy assessment: evaluate simplicity, module responsibility boundaries, public API docs, critical-path test coverage, hot-path allocation/copy behavior, and backward-compatibility impacts; identify concrete findings with severity and evidence.
674. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
675. Review artifact delivery: write refreshed `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), followed by assumptions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
676. Knowledge capture: append concrete 2026-02-21 review-pass facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
677. Progress/review bookkeeping: mark tasks `671-676` complete in `WORK.md` and append a dated `Review Notes` summary for this pass.
678. Post-completion engineering sweep: compare the refreshed review outcome against current workspace state and record any additional production-quality follow-up tasks (or explicitly confirm none).
679. Fix-all intake (current request): re-read `sqlite-provider-review.md`, `WORK.md` instructions, and existing `.codex/knowledge` context; map each active finding to concrete implementation/test deltas.
680. Canonical ABI compatibility remediation: align exported/public signatures to canonical SQLite for `sqlite3_create_function_v2` / `sqlite3_create_window_function` destroy callbacks (`void(*)(void*)`) and `sqlite3_free_table(char**)` across `sqlite3.h`, ABI exports, and call sites.
681. Canonical `sqlite3_free_table` safety hardening: preserve repeated-call safety under the canonical `char**` signature by tracking shim-owned table allocations and ignoring duplicate frees safely.
682. Regression alignment module: update and extend ABI tests for canonical destroy-callback semantics and canonical `sqlite3_free_table` call form; remove no-arg/triple-pointer contract assumptions.
683. Optional ABI real-backend coverage module (Rust e2e): add concise smoke tests for backup, blob I/O, serialize/deserialize, WAL checkpoint, and table-column metadata paths.
684. Optional ABI black-box coverage module (Python ctypes): add concise end-to-end optional-API smoke tests and required symbol prototype bindings for the same API families.
685. Pytest dependency elimination verification: ensure executable/runtime/test runner paths do not import or invoke `pytest` and keep standalone runner flow intact.
686. Validation and artifact closure: run full verification matrix, refresh `sqlite-provider-review.md` to reflect resolved findings, and append concrete facts to `.codex/knowledge` + `WORK.md` progress/review notes.
687. New review intake (2026-02-21 current detailed implementation/design review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
688. Requirement traceability refresh: map design commitments (architecture, SPI boundaries, safety/lifetimes, extension/vtab behavior, and performance goals) to concrete code/test locations in current workspace.
689. Full implementation/test deep audit: re-read all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust integration/unit tests, Python suites, scripts, `Makefile`) and collect concrete discrepancy candidates with line-level evidence.
690. Standards and production-readiness assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and backward-compatibility risks.
691. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
692. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity ranked with file/line references), design-goal assessment, discrepancy summary, and production-readiness verdict.
693. Knowledge capture: append concrete 2026-02-21 review facts (scope, file locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
694. Progress/review bookkeeping: update `WORK.md` progress statuses and append a dated `Review Notes` entry for this pass.
695. Post-completion engineering sweep: compare final findings against current workspace state and record any additional production-quality follow-up tasks (or explicitly confirm none).
696. New review intake (2026-02-22 current detailed implementation/design review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
697. Full implementation/test deep audit + traceability refresh: re-read all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`, `sqlite3.h`) and map design commitments to concrete code locations.
698. Standards and discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, panic/FFI safety boundaries, and backward-compatibility impact; identify concrete findings with severity/file evidence.
699. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
700. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), then assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
701. Knowledge capture: append concrete 2026-02-22 review facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
702. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-up tasks (or explicitly confirm none).
687. New review intake (2026-02-21 current detailed implementation/design review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
688. Requirement traceability refresh: map design commitments (architecture, SPI boundaries, safety/lifetimes, extension/vtab behavior, and performance goals) to concrete code/test locations in current workspace.
689. Full implementation/test deep audit: re-read all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust integration/unit tests, Python suites, scripts, `Makefile`) and collect concrete discrepancy candidates with line-level evidence.
690. Standards and production-readiness assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and backward-compatibility risks.
691. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
692. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity ranked with file/line references), design-goal assessment, discrepancy summary, and production-readiness verdict.
693. Knowledge capture: append concrete 2026-02-21 review facts (scope, file locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
694. Progress/review bookkeeping: update `WORK.md` progress statuses and append a dated `Review Notes` entry for this pass.
695. Post-completion engineering sweep: compare final findings against current workspace state and record any additional production-quality follow-up tasks (or explicitly confirm none).
703. Clippy warning intake (2026-02-22 follow-up): map reported `missing_safety_doc` and `unnecessary_cast` diagnostics to concrete call sites in `sqlite-provider-sqlite3/src/lib.rs`, `sqlite-provider-sqlite3/src/extensions_impl.rs`, and `sqlite-provider-abi/src/lib.rs`.
704. Remediation module: add precise `# Safety` rustdoc sections for newly exposed unsafe ABI helper methods and remove redundant same-type raw-pointer casts while preserving FFI behavior.
705. Validation pass (targeted Clippy): run `cargo clippy -p sqlite-provider-sqlite3 --lib` and `cargo clippy -p sqlite-provider-abi --lib` to confirm the reported warning set is cleared.
706. Knowledge/progress closure: record concrete edits and validation outcomes in `.codex/knowledge/sqlite-provider-sqlite3.md` and `.codex/knowledge/sqlite-provider-abi.md`, then mark completion in `WORK.md`.
707. Fix-all intake (2026-02-22 follow-up): re-read active findings in `sqlite-provider-review.md` and map callback-lifecycle/test gaps to concrete code/test deltas.
708. Callback-lifecycle remediation module: make callback-handle drop registration-aware in `src/connection/hooks.rs` so stale handles do not unregister newer same-kind registrations.
709. Regression-test module: add concise overlapping-registration/drop-order tests for trace, authorizer, and progress handlers in `tests/integration.rs`.
710. Pytest-dependency verification module: re-scan executable/runtime test paths for `pytest` references and ensure standalone Python runner constraints remain satisfied.
711. Validation pass (full matrix): run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
712. Review artifact refresh: update `sqlite-provider-review.md` to close resolved findings and record residual risk status.
713. Knowledge/progress closure: append concrete remediation facts to `.codex/knowledge/sqlite-provider-review-2026-02-22.md` and update `WORK.md` progress/review notes.

714. New review intake (2026-02-22 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` fully before auditing.
715. Full implementation/test deep-read + design traceability refresh: inspect all runtime/ABI/adapter/test/orchestration files and map design commitments to concrete code paths.
716. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
717. Targeted ABI parity probes: run focused ctypes probes for out-parameter behavior on failure paths (`sqlite3_open_v2`, `sqlite3_blob_open`, `sqlite3_serialize`) to confirm/deny C-ABI compatibility risk.
718. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering, design-goal assessment, discrepancy summary, and production-readiness verdict.
719. Knowledge capture: append concrete 2026-02-22 review-pass facts and probe outcomes to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
720. Progress/review bookkeeping: mark tasks `714-719` complete in `WORK.md` and append a dated `Review Notes` summary for this pass.
721. Review-fix intake (current request): map active findings in `sqlite-provider-review.md` to concrete code/test changes and verify current runtime paths have no pytest dependency.
722. ABI out-parameter sanitation remediation: update `sqlite-provider-abi/src/exports.rs` so `sqlite3_open_v2`, `sqlite3_blob_open`, and `sqlite3_serialize` clear output pointers/lengths before failure-prone branches.
723. Regression coverage module: add focused tests for `sqlite3_blob_open`/`sqlite3_serialize` failure-path output clearing and add a no-default-backend regression for `sqlite3_open_v2` bootstrap-failure output clearing.
724. Feature-gating cleanup module: gate default-backend-only e2e tests so no-default-features targeted regressions can run deterministically.
725. Pytest-elimination closure module: verify executable/runtime test entrypoints have no pytest dependency and keep standalone Python runner flow.
726. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-abi --no-default-features --test no_default_features_out_params`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
727. Artifact/knowledge/progress refresh: update `sqlite-provider-review.md`, append concrete facts to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`, and mark task completion in `WORK.md` Review Notes.
728. New review intake (2026-02-22 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
729. Full implementation/test deep-read + traceability refresh: inspect all runtime/ABI/adapter/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`, `sqlite3.h`) and map design commitments to concrete code paths.
730. Standards/discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, panic/FFI safety boundaries, and backward-compatibility impacts; identify concrete findings with severity/file evidence.
731. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
732. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), then assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
733. Knowledge capture: append concrete 2026-02-22 review-pass facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
734. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-up tasks (or explicitly confirm none).
743. New review intake (2026-02-22 current detailed design-doc implementation review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
744. Full implementation/test deep-read + traceability refresh: inspect all runtime/ABI/adapter/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`, `sqlite3.h`) and map design commitments to concrete code paths.
745. Standards/discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, panic/FFI safety boundaries, and backward-compatibility impacts; identify concrete findings with severity/file evidence.
746. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
747. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), then assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
748. Knowledge capture: append concrete 2026-02-22 review-pass facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
749. Progress/review bookkeeping: update `WORK.md` progress statuses, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-up tasks (or explicitly confirm none).
750. Post-completion engineering sweep: compare current workspace diffs and review outcomes against design traceability, then record any additional production-quality improvements discovered.
## Agent Work Progress
- [x] 1. Baseline setup: confirm repo state, create `.codex` directories, and capture initial knowledge entries.
- [x] 2. Draft the high-level architecture and core trait sketches (provider SPI, safe API wrappers) including versioning strategy.
- [x] 3. Draft extension framework and virtual table abstractions with lifecycle and safety strategies.
- [x] 4. Finalize the design doc with usage example and panic/FFI safety notes; update progress tracking.
- [x] 5. Review design doc completeness and API correctness; refine SPI signatures and add aggregate-function support details.
- [x] 6. Record new findings and update knowledge entries after refinements.
- [x] 7. Backend constraints review: inspect current design doc and enumerate backend-specific constraints for libsqlite3, SQLCipher, and libsql (compatibility, keying, and API extensions).
- [x] 8. Update the design doc to bake in backend constraints (open options, optional keying APIs, backend identification/versioning, extension hooks).
- [x] 9. Record backend constraint findings and design updates in `.codex/knowledge`; update work progress.
- [x] 10. Review the local `sqlite3.h` interface surface and record concrete API facts in `.codex/knowledge`.
- [x] 11. Compare the design doc against `sqlite3.h` and list missing features or mismatches; summarize for the user.
- [x] 12. Update work progress after the review.
- [x] 13. Update the design doc with `create_window_function` SPI entry and feature gating.
- [x] 14. Add optional extension traits section covering hooks/backup/blob/serialize/WAL/metadata.
- [x] 15. Add explicit notes on `RawBytes` length semantics and `result_*` ownership guarantees; update knowledge entries.
- [x] 16. Add safe wrapper API sketches for optional extension traits.
- [x] 17. Tighten `OwnedBytes`/`free` ownership model in the serialize trait and update safety notes.
- [x] 18. Record new design updates in `.codex/knowledge` and update progress.
- [x] 19. Flesh out safe wrapper callback registration for trace/authorizer hooks.
- [x] 20. Add `SerializedDb::into_vec()` helper to detach backend allocation.
- [x] 21. Record new wrapper changes in `.codex/knowledge` and update progress.
- [x] 22. Add typed authorizer action constants/enum and structured `TraceEvent` decoding for trace callbacks.
- [x] 23. Record new trace/authorizer updates in `.codex/knowledge` and update progress.
- [x] 24. Add `AuthorizerResult` enum and per-variant trace docs; update knowledge tracking.
- [x] 25. Add AuthorizerResult return-code docs and example usage for trace/authorizer handlers.
- [x] 26. Read both design documents (`.codex/design/sqlite-provider.md` and `sqlite-provider.md`) and capture concrete structural/API differences.
- [x] 27. Compare SPI coverage (versioning, open options, prepare/bind/value/column, UDF/window, vtab/module) and list feature deltas.
- [x] 28. Compare safety/ownership/lifetime strategies (RawBytes vs slice, ownership for results, callback handling) and extract trade-offs.
- [x] 29. Summarize pros/cons of each design version and identify when each is preferable.
- [x] 30. Record comparison facts in `.codex/knowledge` with file locations.
- [x] 31. Update work progress after completing the comparison write-up.
- [x] 32. Initialize the Rust crate skeleton (`Cargo.toml`, `src/lib.rs`, module layout) and note any design feasibility adjustments.
- [x] 33. Implement core SPI types plus `error`/`value` modules (flags, `RawBytes`, `Error`, `Value`, `ValueRef`) with unit tests.
- [x] 34. Implement `Connection`/`Statement`/`Row` wrappers (prepare/step/bind/column access) and add MockApi-based tests.
- [x] 35. Implement function UDF framework (`Context`, scalar/aggregate/window registration + trampolines) with tests.
- [x] 36. Implement optional extension wrappers (hooks/backup/blob/serialize/WAL/metadata) and tests for callback handles + serialize.
- [x] 37. Implement virtual table traits and minimal module glue; document any backend constraints in knowledge.
- [x] 38. Add integration tests for key flows (prepare/step, UDF, aggregate, serialize, hooks) and run `cargo test`.
- [x] 39. Update `.codex/knowledge` with concrete code facts/locations and update work progress.
- [x] 40. Post-implementation review: compare implemented modules to design doc, note deviations (SPI additions, vtab generics), and verify critical components are present.
- [x] 41. Scan for performance/readability/test-coverage improvements and record any follow-ups.
- [x] 42. Update work progress after the review sweep.
- [x] 43. Review current implementation against `.codex/design/sqlite-provider.md`, note any gaps or feasibility concerns, and identify performance/test improvements.
- [x] 44. Reduce hot-path allocations in virtual table argument handling; keep the API simple and add concise safety comments where needed.
- [x] 45. Add targeted doc comments for tricky lifetime/ownership semantics in public APIs (e.g., RawBytes, result_text/blob usage).
- [x] 46. Add integration tests for window function registration and virtual table feature gating; add unit tests for new vtab argument handling.
- [x] 47. Run `cargo test`, then update `.codex/knowledge` with new facts and progress.
- [x] 48. Review current changes (manual inspection since no git) against the design doc and confirm coverage; note any remaining gaps or improvement opportunities.
- [x] 49. Apply any remaining improvements discovered during the review (or record that none are needed).
- [x] 50. Update progress/knowledge to reflect the review outcome.
- [x] 51. Plan and implement the `sqlite-provider-abi` crate: add workspace member, cdylib config, and ABI registry design; document constraints in WORK.md.
- [x] 52. Implement ABI handle types and provider registry (core SPI + optional extensions + extras) in `sqlite-provider-abi`.
- [x] 53. Implement C ABI symbols from `sqlite3.h`, including utility functions and error handling; keep hot paths allocation-light.
- [x] 54. Add minimal tests for ABI helpers and run `cargo test`.
- [x] 55. Update `.codex/knowledge` with ABI design/implementation facts and update progress.
- [x] 56. Review `sqlite-provider-abi` symbol coverage against `sqlite3.h` using `rg` + `comm`, confirm all required `sqlite3_*` symbols are exported (non-function typedefs excluded).
- [x] 57. Review ABI shim for design-doc alignment and potential safety/perf issues; record any gaps or improvements (or confirm none).
- [x] 58. Run tests (`cargo test`, `cargo test -p sqlite-provider-abi`) and capture results for the ABI shim.
- [x] 59. Update `.codex/knowledge` with symbol coverage verification + test execution facts; update work progress.
- [x] 60. Add `sqlite-provider-sqlite3` workspace crate implementing a dynamic `libsqlite3` backend adapter (`Sqlite3Api` + optional metadata); keep dependencies minimal (`libc` only) and document any safety assumptions inline.
- [x] 61. Add ABI-shim integration tests for `sqlite3_exec`/`sqlite3_get_table` using a mock provider with predictable row data and column names.
- [x] 62. Add ABI-shim end-to-end integration test that registers the `libsqlite3` adapter (if available) and validates `sqlite3_exec` + `sqlite3_get_table` against a real in-memory database; skip when `libsqlite3` cannot be loaded.
- [x] 63. Run `cargo test` and `cargo test -p sqlite-provider-abi`; capture results and update `.codex/knowledge` with new adapter/test facts.
- [x] 64. Post-change review: scan new adapter/test code for safety/perf issues or missing coverage; record any follow-up improvements (or confirm none).
- [x] 65. Update progress/knowledge to reflect the review outcome.
- [x] 66. Integration-test discovery pass: re-read current ABI tests and verify whether they are true black-box dynamic-loading tests or in-process Rust-link tests.
- [x] 67. Identify ABI initialization constraints for dynamic loading (provider registration and backend bootstrap path), and define a production-safe initialization design.
- [x] 68. Design the black-box test architecture (consumer process, dynamic loading path, symbol mapping strategy, and result assertions).
- [x] 69. Define test directory structure plus build/run orchestration changes (Makefile/scripts/env vars) that guarantee the cdylib artifact is built and explicitly loaded.
- [x] 70. Specify detailed scenario coverage: open/close, exec DDL+DML, prepare/bind/step/column/finalize, and backend error propagation through the C ABI.
- [x] 71. Write `.codex/design/integration-tests.md` in English with concrete code-location references and implementation-oriented snippets.
- [x] 72. Implementation phase (next): add ABI bootstrap hooks/default backend registration path and add the new black-box integration test assets.
- [x] 73. Validation phase (next): run the new black-box test target(s), collect results, and update knowledge/progress with any follow-up fixes.
- [x] 74. Feasibility audit for `.codex/design/integration-tests.md` against current code: verify required symbols, bootstrap constraints, and cross-crate dependency direction before edits.
- [x] 75. Module A (ABI bootstrap): add idempotent default-backend bootstrap helper and exported `sqlite3_provider_init_default`, then wire it into `sqlite3_initialize` and `sqlite3_open_v2`.
- [x] 76. Module A validation: run focused ABI tests around open/exec/get_table and ensure no regressions in existing Rust-linked integration tests.
- [x] 77. Module B (orchestration): add deterministic artifact locator script and root `Makefile` targets for building/running black-box tests.
- [x] 78. Module C (black-box tests): add Python `ctypes` consumer tests that dynamically load only the produced cdylib and cover lifecycle, exec, prepare/bind/step/column/finalize, and error propagation.
- [x] 79. Module C validation: run the black-box test entrypoint and resolve any ABI mismatch findings.
- [x] 80. Documentation pass: add concise doc comments/safety notes for the new public bootstrap ABI and any tricky ownership points touched in this change.
- [x] 81. Knowledge capture: record concrete code facts and run results in `.codex/knowledge/abi-blackbox-integration-tests.md`.
- [x] 82. Final review: compare implementation against the design doc, scan for performance/readability regressions, and update progress status.
- [x] 83. Delivery pass (user request): re-read `.codex/design/integration-tests.md` and verify that each requested deliverable file exists and matches bootstrap constraints.
- [x] 84. Tighten Python ABI typing for `sqlite3_exec` error out-parameter to `char**` semantics in the black-box runner while preserving explicit `sqlite3_provider_init_default` bootstrap call.
- [x] 85. Re-run the black-box suite strictly through `make test-abi-blackbox` (no `cargo test`) and confirm pass/fail status.
- [x] 86. Record concrete 2026-02-13 delivery verification facts and updated file locations in `.codex/knowledge/abi-blackbox-integration-tests.md`.
- [x] 87. Update work progress/review notes for this delivery pass.
- [x] 88. New request intake: review current completed plan state and existing design/knowledge docs before creating a new design artifact.
- [x] 89. Define an SDET-oriented test strategy for SQLite local-first edge-node behavior covering concurrency, JSON1, analytics SQL correctness, and rollback atomicity.
- [x] 90. Write `.codex/design/test-suites.md` with distinct scenario sections, each including strategy plus representative `pytest` + `sqlite3` code snippets and explicit PRAGMA configuration comments.
- [x] 91. Capture concrete delivery facts and file locations for this test-suite design in `.codex/knowledge/sqlite3-api-test-suite-design.md`.
- [x] 92. Update `WORK.md` progress/review notes for the new design-delivery task.
- [x] 93. New review request intake: read `.codex/design/test-suites.md` completely and perform a codebase-grounded feasibility/quality review.
- [x] 94. Re-read unfamiliar runtime paths across `sqlite-provider`, `sqlite-provider-abi`, `sqlite-provider-sqlite3`, and tests to eliminate ambiguity before proposing revisions.
- [x] 95. Identify strengths/weaknesses/gaps of the current test-suite design against production requirements (reliability, performance hot path awareness, and deploy readiness).
- [x] 96. Write revised, self-contained design document to `.codex/design/abc_v2.md` with concrete implementation guidance and code-location references.
- [x] 97. Record review/revision facts in `.codex/knowledge/sqlite3-api-test-suite-review.md`.
- [x] 98. Update `WORK.md` progress/review notes for this review/revision delivery.
- [x] 99. New implementation intake: read `.codex/design/test-suites.md` completely, re-read existing runtime/test code paths, and perform a feasibility audit against current ABI/test harness constraints.
- [x] 100. Decompose the implementation into single-responsibility modules (shared helpers, scenario tests, orchestration) and record the module-by-module execution/testing plan in `WORK.md`.
- [x] 101. Module 1 (shared helper): add `tests/sqlite_provider_py/conftest.py` with deterministic connection policy (`WAL`, sync mode, FK, busy timeout) and bounded lock-retry helper.
- [x] 102. Module 1 validation: run the new Python test package in collection/targeted mode to confirm helper wiring and import/package layout.
- [x] 103. Module 2 (scenario tests): add `test_concurrency_busy.py`, `test_json1_hybrid.py`, `test_window_cte_integrity.py`, and `test_transaction_atomicity.py` aligned with design assertions and anti-flake guards.
- [x] 104. Module 2 validation: run each scenario test module individually and address reliability/performance issues (timeouts, deterministic ordering, minimal per-row Python overhead).
- [x] 105. Module 3 (orchestration): update `Makefile` with a dedicated target for the new pytest suite and keep existing ABI black-box target unchanged.
- [x] 106. Full validation: run the new pytest target plus required Rust tests (`cargo test <test_case_name>` focused runs and baseline `cargo test`) and resolve regressions.
- [x] 107. Documentation/readability pass: add concise comments/docstrings for tricky test orchestration details only where needed.
- [x] 108. Knowledge/progress update: record concrete implementation facts and run outcomes in `.codex/knowledge`, then update `WORK.md` progress and review notes.
- [x] 109. Shim-enforcement request intake: ensure SQL scenario tests route through `libsqlite_provider_abi.so` only, and define symbol-origin verification for `sqlite3_open` and `sqlite3_exec`.
- [x] 110. Module A (ctypes harness): replace Python `sqlite3`-based helpers with C-ABI wrappers in `tests/sqlite_provider_py/conftest.py`, including `sqlite3_provider_init_default` bootstrap and `dladdr` origin assertions.
- [x] 111. Module A validation: run syntax checks and direct helper initialization to verify symbol-origin assertions and ABI bootstrap behavior.
- [x] 112. Module B (scenario migration): rewrite all `tests/sqlite_provider_py` scenarios to use the ctypes C-ABI wrapper only (no Python `sqlite3` module calls).
- [x] 113. Module B validation: execute migrated scenario functions via a direct Python harness with `SQLITE3_SPI_LIB` configured, and confirm all assertions pass.
- [x] 114. Module C (orchestration): update `Makefile` target `test-sqlite-provider-py` to build ABI first and inject `SQLITE3_SPI_LIB` from the locator script.
- [x] 115. Full validation for shim-enforcement pass: run `make test-sqlite-provider-py`, `make test-abi-blackbox`, focused `cargo test <test_case_name>`, and baseline cargo suites; capture environment blockers if present.
- [x] 116. Knowledge/progress update: record concrete code locations and validation outcomes for this shim-enforcement pass in `.codex/knowledge` and `WORK.md`.
- [x] 117. Unsafe-warning intake: map Rust 2024 `unsafe_op_in_unsafe_fn` warnings to concrete call sites in `src/connection.rs`, `src/function.rs`, `src/provider.rs`, `src/value.rs`, and `src/vtab.rs`.
- [x] 118. Safety patch module: wrap each warned unsafe operation in explicit `unsafe { ... }` blocks with narrow scope; keep semantics unchanged and add concise safety comments only where needed for non-obvious raw-pointer assumptions.
- [x] 119. Validation pass: run crate tests (`cargo test`) and confirm the warning set is cleared (or capture exact residual blockers if the environment prevents full execution).
- [x] 120. Knowledge capture: record precise touched functions and safety rationale in `.codex/knowledge/sqlite-provider-impl.md`.
- [x] 121. Progress/review update: mark completion status in `WORK.md` and append dated review notes for this warning-remediation pass.
- [x] 122. Clippy warning intake (2026-02-16): map the reported `type_complexity`, `not_unsafe_ptr_arg_deref`, `len_without_is_empty`, `too_many_arguments`, `missing_safety_doc`, and `unnecessary_cast` findings to concrete call sites in `src/connection.rs`, `src/function.rs`, `src/provider.rs`, and `src/vtab.rs`.
- [x] 123. Safety/API patch module: add a trace callback type alias, mark `Connection::progress_handler` as `unsafe` with safety docs, and add `Blob::is_empty`; keep behavior unchanged.
- [x] 124. SPI lint-hardening module: add unsafe-trait `# Safety` docs and narrowly scoped Clippy allows for SQLite C-signature-heavy APIs where argument counts/doc granularity are intentionally inherited from upstream ABI.
- [x] 125. Virtual-table cleanup module: remove redundant raw-pointer casts in vtab glue while preserving existing associated-type bounds and ownership behavior.
- [x] 126. Validation pass (Clippy): run `cargo clippy --all-targets --all-features` and fix any residual diagnostics from this warning set.
- [x] 127. Knowledge/progress update: record concrete code locations and validation results in `.codex/knowledge/sqlite-provider-impl.md`, then mark completion and append dated review notes in `WORK.md`.
- [x] 128. Rust 2024 adapter intake: inspect `sqlite-provider-sqlite3/src/lib.rs` compile/lint output for `extern`-block and `unsafe_op_in_unsafe_fn` issues from `cargo test -p sqlite-provider-abi`.
- [x] 129. Adapter safety patch module: fix the Rust 2024 `extern` block requirement and apply narrowly scoped lint handling for `unsafe_op_in_unsafe_fn` in the dynamic libsqlite3 adapter without changing runtime behavior.
- [x] 130. Validation pass (adapter): run `cargo test -p sqlite-provider-abi` and confirm compile/test status after the adapter patch.
- [x] 131. Knowledge/progress update: record concrete adapter changes and validation outcome in `.codex/knowledge/sqlite-provider-sqlite3.md`, then mark completion and append dated review notes in `WORK.md`.
- [x] 132. Rust 2024 ABI blocker intake: map `sqlite-provider-abi/src/lib.rs` `unsafe attribute used without unsafe` failures (`#[no_mangle]`) discovered during validation.
- [x] 133. ABI export-attribute patch module: apply mechanical migration from `#[no_mangle]` to `#[unsafe(no_mangle)]` for exported C symbols without changing symbol names or function bodies.
- [x] 134. Validation pass (ABI export attrs): rerun `cargo test -p sqlite-provider-abi` and confirm compile/test status.
- [x] 135. Knowledge/progress update: record concrete ABI export-attribute migration facts in `.codex/knowledge/sqlite-provider-abi.md` and update `WORK.md` progress/review notes.
- [x] 136. Clippy cast-warning intake (2026-02-18 follow-up): map reported `clippy::unnecessary_cast` call sites in `sqlite-provider-sqlite3/src/lib.rs` and compare with current source state.
- [x] 137. Adapter cast-remediation module: ensure redundant same-type raw-pointer casts are removed at bind/column/result/value/cstr conversion call sites while preserving behavior.
- [x] 138. Validation pass (adapter cast warnings): run `cargo clippy -p sqlite-provider-sqlite3 --lib` and `cargo test -p sqlite-provider-abi` to confirm adapter cast warnings are absent in the reported build path.
- [x] 139. Knowledge/progress update: record concrete cast-warning status and validation facts in `.codex/knowledge/sqlite-provider-sqlite3.md`; update `WORK.md` progress/review notes.
- [x] 140. ABI warning/error intake (2026-02-18): map the newly reported `sqlite-provider-abi/src/lib.rs` lint set (`not_unsafe_ptr_arg_deref`, `unsafe_op_in_unsafe_fn`, style/cast findings) and confirm remaining `sqlite-provider-sqlite3` cast diagnostics.
- [x] 141. ABI remediation module: apply FFI-appropriate lint policy plus targeted cleanup edits (remove redundant casts, simplify style warnings) without changing exported symbol behavior.
- [x] 142. Validation pass (ABI warning set): run `cargo clippy -p sqlite-provider-abi --all-targets --all-features`, `cargo clippy -p sqlite-provider-sqlite3 --all-targets --all-features`, and `cargo test` for `sqlite-provider-abi`.
- [x] 143. Knowledge/progress update: record concrete fixes and clean validation outcomes in `.codex/knowledge/sqlite-provider-abi.md`, `.codex/knowledge/sqlite-provider-sqlite3.md`, and `WORK.md`.
- [x] 144. New review request intake (2026-02-18): read `sqlite-provider.md` completely, re-read all implementation/test files across `src/`, `sqlite-provider-abi`, `sqlite-provider-sqlite3`, and Python suites, and confirm current runtime validation status.
- [x] 145. Design-conformance audit: map design requirements (safety, lifetimes, callback panic boundaries, SPI capability handling) to concrete implementations and identify discrepancies with file/line evidence.
- [x] 146. Quality/performance audit: review hot paths and ownership boundaries for obvious UB/leak/regression risks; prioritize production-impacting findings and missing tests/docs.
- [x] 147. Validation pass for review evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and black-box targets; capture environment blockers exactly.
- [x] 148. Deliver review artifact: write `sqlite-provider-review.md` with severity-ordered findings, open questions/assumptions, design-goal assessment, and discrepancy summary.
- [x] 149. Knowledge/progress update: record concrete review facts in `.codex/knowledge` and update `WORK.md` progress/review notes for this request.
- [x] 150. Review-remediation intake (2026-02-18): read `sqlite-provider-review.md`, re-read all flagged code paths (`src/value.rs`, `src/function.rs`, `src/vtab.rs`, `src/connection.rs`, `sqlite-provider-abi/src/lib.rs`), and define a concrete fix sequence.
- [x] 151. Safety remediations module: add panic-containment boundaries for virtual-table callbacks and aggregate/window init callbacks; harden text decoding paths to avoid unchecked UTF-8 UB while keeping hot paths allocation-light.
- [x] 152. Resource-lifetime remediations module: fix hook-registration error-path leaks and stop per-call virtual-table module leakage by caching module descriptors per Rust type instantiation.
- [x] 153. ABI correctness remediations module: add explicit SQLite-C-to-internal flag translation for `sqlite3_open_v2` and `sqlite3_create_function_v2`/`sqlite3_create_window_function` flag bits.
- [x] 154. Targeted regression tests module: add concise tests for panic containment, invalid UTF-8 handling, module-descriptor reuse, hook-registration cleanup, and ABI flag translation behavior.
- [x] 155. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features`; resolve regressions found in this pass.
- [x] 156. Knowledge/progress update: record concrete remediation facts and validation outcomes in `.codex/knowledge`, then update `WORK.md` progress/review notes.
- [x] 157. Python-suite portability remediation: remove hard runtime dependency on `pytest` for `test-sqlite-provider-py` by adding an in-repo fallback test runner path.
- [x] 158. Python-suite validation: run `make test-sqlite-provider-py` in this environment and ensure the fallback path executes all `tests/sqlite_provider_py/test_*.py` cases successfully.
- [x] 159. Progress/knowledge follow-up: record the portability fix and validation evidence in `.codex/knowledge` and `WORK.md`.
- [x] 160. New review request intake (2026-02-19): read `sqlite-provider.md` fully, re-read all runtime implementation files (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and test suites to establish current behavior before evaluating quality.
- [x] 161. Knowledge refresh and gap check: read existing `.codex/knowledge` review/remediation notes, then verify whether prior findings are still applicable after recent fixes.
- [x] 162. Design-conformance deep audit: map each design goal (simplicity, module boundaries, safety/lifetimes, extensibility, backend-agnostic SPI) to concrete code paths and identify discrepancies with file/line evidence.
- [x] 163. Production-readiness audit: inspect hot paths for avoidable allocations/copies, resource-lifetime correctness, panic/FFI containment, and backward-compatibility implications of ABI/surface changes.
- [x] 164. Test/documentation audit: verify coverage of critical paths and check public API rustdoc completeness/clarity against project standards.
- [x] 165. Validation pass for review evidence: run current test/lint targets needed to support findings (`cargo test`, targeted workspace tests, and `cargo clippy --all-targets --all-features`) and capture any blockers precisely.
- [x] 166. Deliver review artifact: write an updated `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, discrepancy summary, and explicit references.
- [x] 167. Knowledge/progress follow-up: record concrete 2026-02-19 review facts in `.codex/knowledge` and update `WORK.md` progress/review notes.
- [x] 168. Review-remediation intake (2026-02-19 follow-up): read updated `sqlite-provider-review.md`, re-read affected code paths, and define a fix sequence for all currently reported findings.
- [x] 169. Lifetime-safety remediation module: tie extension handles (`CallbackHandle`, `Backup`, `Blob`) to connection borrows so they cannot outlive the originating connection(s).
- [x] 170. Callback-drop safety module: avoid freeing callback state if unregister fails during `CallbackHandle` drop to prevent potential dangling callback pointers.
- [x] 171. ABI ownership-semantics remediation: implement SQLite-compatible destructor handling for `sqlite3_bind_text/blob` and `sqlite3_result_text/blob` in `sqlite-provider-abi`.
- [x] 172. Contract/documentation remediation: align `RawBytes` validity documentation with safe row API behavior and add concise docs for tricky ownership/lifetime paths touched in this pass.
- [x] 173. Regression-test module: add targeted tests covering destructor-callback behavior and any new edge cases introduced by this remediation.
- [x] 174. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 175. Knowledge/progress follow-up: record concrete remediation facts in `.codex/knowledge` and update `WORK.md` progress/review notes.
- [x] 176. New review request intake (2026-02-19 latest pass): re-read `WORK.md`, `sqlite-provider.md`, and existing knowledge entries, then re-audit all implementation/test files for current behavior.
- [x] 177. Design/quality audit: evaluate current code against standards (simplicity, module boundaries, API docs, critical test coverage, hot-path allocation/copy behavior, production readiness) and identify concrete discrepancies with file/line evidence.
- [x] 178. Validation pass for review evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 179. Deliver refreshed review artifact: update `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, and discrepancy summary.
- [x] 180. Knowledge capture: record concrete 2026-02-19 latest-pass review facts and code locations in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 181. Progress/review follow-up: update `WORK.md` Agent Work Progress and Review Notes with this pass results.
- [x] 182. Review-fix intake (2026-02-19 user follow-up): read current `sqlite-provider-review.md`, re-open all impacted code paths (`src/connection.rs`, `tests/integration.rs`, `sqlite-provider.md`), and define a minimal remediation sequence.
- [x] 183. Authorizer semantics remediation: correct `AuthorizerResult` code mapping to SQLite constants and make authorizer panic path fail-closed.
- [x] 184. Authorizer regression tests: add concise tests that invoke the authorizer callback directly and verify `Ok`/`Ignore`/`Deny` numeric codes plus panic behavior.
- [x] 185. Design-doc reconciliation: update `sqlite-provider.md` API/lifetime signatures to match implemented SPI (`open` with `OpenOptions`, `RawBytes` accessors, and row borrowing wording).
- [x] 186. Validation pass for remediation evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 187. Review artifact refresh: update `sqlite-provider-review.md` so previously reported issues are closed and any residual gaps are clearly stated.
- [x] 188. Knowledge/progress follow-up: update `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and `WORK.md` progress/review notes with concrete remediation facts and validation results.
- [x] 189. New review request intake (2026-02-19 current pass): re-read `WORK.md`, `sqlite-provider.md`, and existing `.codex/knowledge` review/remediation notes; inventory all implementation and test files in the workspace.
- [x] 190. Full implementation audit: read `src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, and Python/black-box test suites line-by-line; identify design/quality discrepancies with concrete file/line evidence.
- [x] 191. Validation pass for review evidence: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 192. Deliver refreshed review artifact: rewrite `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, discrepancy summary, and residual testing/documentation risks.
- [x] 193. Knowledge/progress follow-up: update `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and `WORK.md` Review Notes with this pass outcomes.
- [x] 194. New remediation intake (2026-02-19 review follow-up): read `sqlite-provider-review.md`, re-read impacted code in `sqlite-provider-sqlite3/src/lib.rs`, `src/vtab.rs`, and `src/value.rs`, and define a fix sequence for all listed residual findings.
- [x] 195. Adapter singleton remediation: make `LibSqlite3::load()` return a stable process-wide cached adapter instance and avoid per-call leaked adapter allocations.
- [x] 196. Virtual-table diagnostics remediation: propagate detailed create/connect failure messages through `out_err` when virtual-table connect or schema declaration fails.
- [x] 197. Rustdoc coverage remediation: add concise public API docs for `Value`/`ValueRef` accessor methods flagged as undocumented.
- [x] 198. Regression-test module: add focused tests for adapter singleton behavior and virtual-table `out_err` propagation paths.
- [x] 199. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 200. Review artifact refresh: update `sqlite-provider-review.md` to reflect closure of all findings from this follow-up pass.
- [x] 201. Knowledge/progress follow-up: record concrete code locations and validation outcomes in `.codex/knowledge`, then update `WORK.md` progress/review notes.
- [x] 202. New review request intake (2026-02-19 deep re-audit): read `WORK.md`, existing `.codex/knowledge` notes, and `sqlite-provider.md` fully before evaluating implementation quality.
- [x] 203. Full codebase review pass: re-read all implementation modules (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and test suites line-by-line; trace impact of each major unsafe/FFI/lifetime boundary.
- [x] 204. Design-conformance and quality evaluation: compare implementation against design goals (simplicity, module boundaries, API docs, critical test coverage, hot-path allocation/copy behavior, and production readiness) and collect discrepancy evidence with file/line references.
- [x] 205. Validation evidence pass: run the current regression/lint targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and Python/black-box suites) to verify reported findings against executable behavior.
- [x] 206. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings, explicit discrepancy mapping to `sqlite-provider.md`, and an overall quality assessment.
- [x] 207. Knowledge capture: update `.codex/knowledge/sqlite-provider-review-2026-02-19.md` with concrete facts from this new review pass.
- [x] 208. Progress/review bookkeeping: mark task completion in `WORK.md` and append a dated Review Notes entry summarizing outcomes and validation status.
- [x] 209. Review-fix intake (2026-02-19 current request): read `sqlite-provider-review.md`, map all five active findings to concrete code/test locations, and define an implementation/validation sequence.
- [x] 210. Virtual-table allocator-contract remediation: add provider allocator hooks and route vtab `out_err` allocation through provider/SQLite-compatible allocation instead of Rust `CString::into_raw`.
- [x] 211. ABI open-outparam remediation: set `*db_out = NULL` in `sqlite3_open_v2` immediately after validating `db_out`, and add a regression test that exercises error returns with initialized sentinel pointers.
- [x] 212. Integration-flake remediation: serialize vtab panic/connect tests that mutate shared global toggles and reset shared state deterministically via a scoped guard.
- [x] 213. ABI callback-name remediation: add deterministic fallback column-name generation when metadata SPI is unavailable (for `sqlite3_exec`, and align `sqlite3_get_table` name header behavior).
- [x] 214. ABI threadsafe-reporting remediation: plumb provider-derived `sqlite3_threadsafe` capability through SPI/ABI and stop returning a hard-coded constant.
- [x] 215. Regression-test module: update/add focused tests for allocator-backed `out_err` handling, open-outparam semantics, callback-name fallback, and provider-derived `sqlite3_threadsafe`.
- [x] 216. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, plus make-target-equivalent black-box/Python commands.
- [x] 217. Knowledge/progress follow-up: record concrete remediation facts in `.codex/knowledge` and append 2026-02-19 review-note evidence in `WORK.md`.
- [x] 218. New review request intake (2026-02-19 design-doc conformance): read `WORK.md`, current `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing code.
- [x] 219. Full implementation audit: read all runtime and test code (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, `tests/`, Python/black-box suites) end-to-end and trace key FFI/lifetime/ownership paths.
- [x] 220. Design-goal assessment: evaluate simplicity, module boundaries, public API documentation coverage, critical test coverage, performance/allocation behavior in hot paths, and production readiness against `sqlite-provider.md`.
- [x] 221. Discrepancy analysis: identify concrete mismatches or regressions between implementation and design document with file/line evidence and impact assessment.
- [x] 222. Validation evidence pass: run full regression/lint suite (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, black-box/Python targets) and capture exact outcomes/blockers.
- [x] 223. Review artifact delivery: write `sqlite-provider-review.md` with severity-ordered findings first, then assumptions/open questions, and a concise overall quality assessment.
- [x] 224. Knowledge capture: record concrete facts discovered in this pass (including file locations and validation outputs) in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 225. Progress/review bookkeeping: mark plan items complete in `WORK.md` Agent Work Progress and append dated Review Notes summarizing this review pass.
- [x] 226. Post-review remediation intake (2026-02-19 safety follow-up): map all active findings from `sqlite-provider-review.md` to concrete code/test changes and define a minimal fix sequence.
- [x] 227. UDF alignment-safety remediation: remove implicit alignment assumptions in aggregate/window state storage (or make preconditions explicit/unsafe) and add concise safety docs for the chosen contract.
- [x] 228. Regression coverage module: add targeted tests for over-aligned aggregate/window state handling and ensure behavior remains deterministic across providers.
- [x] 229. Public API documentation remediation: add rustdoc comments for public `Error` constructors in `src/error.rs`.
- [x] 230. Module-boundary follow-up: evaluate and implement a low-risk `connection` module split (core vs hooks/extensions) if it can be done without API breakage; otherwise record a concrete defer rationale.
- [x] 231. Validation and bookkeeping: run regression/lint targets after follow-up changes, then update `.codex/knowledge` and `WORK.md` progress/review notes.
- [x] 232. Remediation-verification intake (2026-02-19 latest request): read `sqlite-provider-review.md`, re-open all flagged code paths, and confirm whether each listed issue is still active.
- [x] 233. Code-level closure check: verify aggregate/window alignment safety, `Error` rustdoc coverage, and `connection` module split implementation details against the review evidence.
- [x] 234. Full validation rerun: execute `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
- [x] 235. Bookkeeping update: record concrete verification facts in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and append this pass outcome in `WORK.md` progress/review notes.
- [x] 236. New request intake (2026-02-19 review-fix confirmation): read current `sqlite-provider-review.md`, `WORK.md`, and existing `.codex/knowledge` entries to determine whether listed findings are still active.
- [x] 237. Closure verification module: map each listed finding to current source/test evidence (`src/function.rs`, `src/error.rs`, `src/connection/*`, `tests/integration.rs`) and confirm remediation status.
- [x] 238. Validation rerun: execute `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, plus make-target-equivalent ABI/Python commands.
- [x] 239. Review artifact normalization: rewrite `sqlite-provider-review.md` so it reflects current active status (no stale open findings) and includes concrete fix evidence.
- [x] 240. Knowledge/progress bookkeeping: append this pass facts to `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` progress/review notes.
- [x] 241. New review request intake (2026-02-19 current pass): read `WORK.md`, existing `.codex/knowledge` entries, and `sqlite-provider.md`, then inventory all implementation/test files in the workspace.
- [x] 242. Full implementation audit: re-read all runtime modules (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) plus Rust/Python test suites and trace FFI ownership/destructor semantics end-to-end.
- [x] 243. Design/quality discrepancy analysis: evaluate implementation against standards (simplicity, module boundaries, docs, critical tests, hot-path allocation behavior, production readiness) and identify concrete mismatches with file/line evidence.
- [x] 244. Validation evidence pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
- [x] 245. Deliver review artifact: rewrite `sqlite-provider-review.md` with severity-ordered findings first, followed by assumptions/open questions, design-goal assessment, and discrepancy summary.
- [x] 246. Knowledge capture: append concrete findings/validation evidence for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 247. Progress/review bookkeeping: update `WORK.md` Agent Work Progress and append a dated `Review Notes` entry with this pass outcome.
- [x] 248. Follow-up verification: cross-check high-risk ABI semantics against real `libsqlite3` behavior with targeted local probes and include confirmed behavioral deltas in the review artifact.
- [x] 249. Review artifact correction intake (2026-02-19 finalization): verify current `sqlite-provider-review.md` reflects latest audit findings and not stale remediation-only content.
- [x] 250. Evidence revalidation: re-run targeted ctypes probes against both shim and system `libsqlite3` for blob-NULL semantics and capture exact numeric type outputs.
- [x] 251. Delivery artifact rewrite: replace `sqlite-provider-review.md` with a severity-ordered review that includes standards assessment and explicit code/design references.
- [x] 252. Knowledge/progress bookkeeping: append this finalization pass facts in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` progress/review notes.
- [x] 253. Remediation intake (2026-02-19 fix request): read `sqlite-provider-review.md` and map each active finding to concrete code/doc changes and regression coverage.
- [x] 254. ABI semantics remediation: make `sqlite3_bind_blob(NULL,...)` and `sqlite3_result_blob(NULL,...)` follow SQLite NULL semantics, then add focused regression tests.
- [x] 255. Design-doc reconciliation: update `sqlite-provider.md` module-structure wording and document invalid-UTF8 text fallback behavior.
- [x] 256. Validation pass: run `cargo fmt --all`, `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent Python/ABI commands.
- [x] 257. Review artifact refresh: update `sqlite-provider-review.md` to remediation status (active findings closed with evidence).
- [x] 258. Knowledge/progress bookkeeping: append concrete fix evidence in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` Review Notes.
- [x] 259. New review intake (2026-02-19 detailed review request): re-read `WORK.md`, `sqlite-provider.md`, and existing `.codex/knowledge` entries; inventory all implementation and test files in the workspace.
- [x] 260. Deep implementation audit module: read every runtime/test file (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, `tests/`, and Python suites), then record concrete behavior notes with code locations in `.codex/knowledge`.
- [x] 261. Standards and design-conformance analysis: evaluate simplicity, module boundaries, public rustdoc coverage, critical test coverage, and hot-path allocation/copy behavior; identify severity-ordered discrepancies vs `sqlite-provider.md`.
- [x] 262. Validation evidence refresh: execute `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands; capture exact blockers if any.
- [x] 263. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then assumptions/open questions, and a concise overall quality assessment.
- [x] 264. Bookkeeping closure: append this pass facts to `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, update `WORK.md` progress state, and add a dated `Review Notes` summary.
- [x] 265. Review-remediation intake (2026-02-19 latest fix request): read `sqlite-provider-review.md` and map active findings (`sqlite3_get_table` multi-statement behavior + rustdoc gaps) to concrete code and test edits.
- [x] 266. ABI behavior remediation: update `sqlite3_get_table` in `sqlite-provider-abi/src/lib.rs` to execute all SQL statements and aggregate row output with SQLite-compatible multi-statement semantics.
- [x] 267. Regression coverage module: add focused tests proving `sqlite3_get_table` handles multi-statement scripts (including setup statements before `SELECT`) and preserves expected result-table layout.
- [x] 268. Public API rustdoc remediation: add missing docs for `ValueRef::to_owned`, `AuthorizerAction::from_code`, and `AuthorizerResult::into_code`.
- [x] 269. Validation pass: run targeted and broad checks (`cargo test -p sqlite-provider-abi`, `cargo test`, `cargo clippy --all-targets --all-features`) and resolve any regressions.
- [x] 270. Knowledge capture: append concrete code/test facts and behavior notes to `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 271. Progress/review bookkeeping: mark completion in `WORK.md` Agent Work Progress and append a dated `Review Notes` entry for this remediation pass.
- [x] 272. New review intake (2026-02-19 detailed design/implementation audit): re-read `WORK.md`, `sqlite-provider.md`, and existing `.codex/knowledge` entries; inventory all runtime/test files.
- [x] 273. Deep implementation audit: re-read `src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, and Python suites; trace FFI/lifetime/ownership behavior end-to-end.
- [x] 274. Validation evidence pass: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
- [x] 275. Behavioral parity probe: compare shim vs system `libsqlite3` on high-risk ABI semantics with targeted ctypes scripts and capture exact outputs.
- [x] 276. Deliver review artifact: rewrite `sqlite-provider-review.md` with severity-ordered findings first plus standards/design-goal assessment.
- [x] 277. Knowledge/progress bookkeeping: append concrete findings and validation/probe evidence to `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` progress/review notes.
- [x] 278. Review-fix intake (2026-02-19 current request): read current `sqlite-provider-review.md` and map each active finding to concrete ABI parser/test changes.
- [x] 279. ABI splitter remediation: update `sqlite-provider-abi/src/lib.rs` statement splitting logic so trigger-body semicolons do not terminate statements prematurely.
- [x] 280. Regression coverage remediation: add focused trigger-body tests for splitter/complete behavior and end-to-end prepare/exec/get_table flows.
- [x] 281. Validation pass: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands after the fix.
- [x] 282. Parity probe rerun: re-compare shim vs system `libsqlite3` trigger-script behavior via targeted ctypes script.
- [x] 283. Bookkeeping refresh: update `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and `WORK.md` review notes with final closure evidence.
- [x] 284. New review intake (2026-02-19 latest detailed audit request): read `WORK.md` Feature Request + existing plan/progress state, re-read `.codex/knowledge` entries, and read `sqlite-provider.md` fully before evaluation.
- [x] 285. Deep implementation audit module: re-read all runtime files (`src/`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all test suites (`tests/`, `sqlite-provider-abi/tests/`, Python suites), tracing FFI ownership/lifetime/error paths end-to-end.
- [x] 286. Standards/design-conformance analysis: evaluate simplicity, module boundaries, public API rustdoc coverage, critical-path test coverage, hot-path allocation/copy behavior, and production-readiness against `sqlite-provider.md`; record concrete discrepancy evidence with file/line references.
- [x] 287. Validation evidence pass: run current validation targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands) and capture exact outcomes/blockers.
- [x] 288. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, followed by assumptions/open questions, design-goal assessment, and discrepancy summary.
- [x] 289. Knowledge capture: append concrete code facts and validation evidence for this pass into `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 290. Progress/review bookkeeping: update `WORK.md` Agent Work Progress and append a dated `Review Notes` entry summarizing this pass.
- [x] 291. Post-completion engineering sweep: inspect current diff/workspace state after task closure, verify critical design components are still covered, and identify any additional production-quality improvements (or confirm none).
- [x] 292. Follow-up recording: capture any newly discovered improvement items from the engineering sweep in `WORK.md` Agent Work Plan and track completion status.
- [x] 293. ABI parity follow-up: align `sqlite3_complete` delimiter-only behavior with system `libsqlite3` semantics (`";"`, repeated semicolons, comment+semicolon) and add focused regression coverage.
- [x] 294. Rustdoc polish follow-up: add field-level docs for public core API fields (`Error`, `ApiVersion`, `OpenOptions`) to improve generated API contract clarity.
- [x] 295. Remediation intake (2026-02-19 current fix request): re-read `sqlite-provider-review.md`, map each active finding to concrete code/test edits, and confirm required validation scope.
- [x] 296. ABI remediation module: update `sqlite3_complete` control flow to treat delimiter-only statements as complete when semicolon terminators are present, while preserving existing trigger-aware splitting behavior.
- [x] 297. Regression coverage module: extend ABI tests with delimiter-only `sqlite3_complete` cases (`";"`, repeated semicolons, comment+semicolon) to lock compatibility behavior.
- [x] 298. Rustdoc remediation module: add concise field-level docs for public `Error`, `ApiVersion`, and `OpenOptions` fields.
- [x] 299. Validation pass: run cargo/package tests, clippy, ABI build, black-box Python, sqlite-provider Python suite, and targeted shim-vs-system parity probe for `sqlite3_complete`.
- [x] 300. Bookkeeping closure: refresh `sqlite-provider-review.md` to reflect remediation status, append concrete facts in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and update `WORK.md` progress/review notes.
- [x] 301. New review intake (2026-02-19 current detailed design-doc request): read `WORK.md` Feature Request/state, existing `.codex/knowledge` notes, and `sqlite-provider.md` completely before auditing.
- [x] 302. Build a requirement-to-implementation traceability matrix from `sqlite-provider.md` (architecture, SPI, safety, UDF/vtab behavior, test expectations) to concrete code locations.
- [x] 303. Core-crate deep audit: re-read every runtime module under `src/` and `tests/integration.rs` to assess simplicity, module boundaries, API docs, safety/lifetimes, and hot-path allocation/copy behavior.
- [x] 304. ABI/adapter deep audit: re-read `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, ABI tests, and Python/black-box suites for C-API compatibility, ownership semantics, and regression risk.
- [x] 305. Validation evidence refresh: run current verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, plus make-target-equivalent ABI/Python commands) and capture exact outcomes.
- [x] 306. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then assumptions/open questions, design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 307. Knowledge capture: append concrete findings/evidence and code-location facts for this pass into `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 308. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry for this review pass.
- [x] 309. Post-completion engineering sweep: inspect workspace diff against the traceability matrix and record any additional production-quality improvements (or confirm none) under Agent Work Plan.
- [x] 310. Post-review remediation intake (2026-02-19 callback-abort follow-up): map the `sqlite3_exec` callback-abort errcode/errmsg parity mismatch to concrete ABI code paths and expected SQLite-compatible behavior.
- [x] 311. ABI callback-abort remediation module: ensure callback-abort (`SQLITE_ABORT`) updates connection-visible error state/message and `err_out` text consistently with SQLite behavior.
- [x] 312. Regression coverage module: add focused ABI tests (and optional parity probe harness assertions) for callback-abort semantics covering return code, `sqlite3_errcode`, and `sqlite3_errmsg`/`err_out`.
- [x] 313. Validation and artifact refresh: run cargo/package tests plus black-box/Python commands and update `sqlite-provider-review.md`/knowledge once remediation is complete.
- [x] 314. Design-doc SPI drift remediation: update `sqlite-provider.md` core `Sqlite3Api` listing so required `malloc`/`free` and `threadsafe` hooks are documented with concise safety semantics.
- [x] 315. Bookkeeping completion: append concrete fix facts and validation outcomes in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and mark this request complete in `WORK.md` Review Notes.
- [x] 316. New review intake (2026-02-19 current detailed review request): re-read `WORK.md`, current `.codex/knowledge` entries, and `sqlite-provider.md`; inventory all runtime and test files before evaluation.
- [x] 317. Deep implementation audit: re-read `src/`, `src/connection/*`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust integration/ABI tests, and Python suites; map discrepancies against design goals.
- [x] 318. Validation evidence pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands.
- [x] 319. ABI parity probe module: run targeted shim-vs-system checks for high-risk text semantics (`sqlite3_bind_text`/`sqlite3_result_text` with invalid UTF-8 payloads) and capture exact outcomes.
- [x] 320. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings, design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 321. Knowledge capture: append concrete findings, file locations, probe evidence, and validation results to `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 322. Progress/review bookkeeping: update `WORK.md` Agent Work Progress and append a dated `Review Notes` entry for this pass.
- [x] 323. Post-completion engineering sweep: compare current workspace state against the review findings and record any additional improvement opportunities (or explicitly confirm none).
- [x] 324. Review-remediation intake (2026-02-19 follow-up): read active findings in `sqlite-provider-review.md`, re-open impacted ABI/SPI/wrapper code paths, and define a concrete fix sequence for all remaining issues.
- [x] 325. SPI text-bytes extension module: add byte-oriented text hooks in `src/provider.rs` (with compatibility defaults) and wire object-safe `AbiCore` forwarding in `sqlite-provider-abi/src/lib.rs`.
- [x] 326. sqlite3-adapter text parity module: implement byte-oriented text bind/result paths in `sqlite-provider-sqlite3/src/lib.rs` so invalid UTF-8 text payloads are forwarded without reinterpretation.
- [x] 327. ABI entrypoint remediation module: update `sqlite3_bind_text` and `sqlite3_result_text` in `sqlite-provider-abi/src/lib.rs` to consume raw byte payloads and call the new text-byte SPI path while preserving destructor semantics.
- [x] 328. ABI compatibility regression module: add focused tests proving invalid UTF-8 `sqlite3_bind_text` and `sqlite3_result_text` behavior matches SQLite expectations in current adapter-backed tests.
- [x] 329. Optional-wrapper coverage module: extend `tests/integration.rs` mock backend with optional extension trait impls and add concise integration tests for `backup_to`, `open_blob`, WAL wrappers, and metadata wrappers (`table_column_metadata`, `column_*_raw`).
- [x] 330. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features` after remediation.
- [x] 331. Artifact/bookkeeping refresh: update `sqlite-provider-review.md`, append concrete remediation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and mark progress/review notes in `WORK.md`.
- [x] 332. Post-remediation engineering sweep: inspect current diff for any additional production-quality follow-ups beyond the remediated findings (or explicitly confirm none).
- [x] 333. New review intake (2026-02-19 current detailed implementation/design audit request): re-read `WORK.md` Feature Request, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before evaluating code quality.
- [x] 334. Requirement traceability matrix: map each design-doc commitment (architecture, SPI surface, wrappers, UDF/vtab lifecycle, safety/performance goals, and testing expectations) to concrete implementation/test locations.
- [x] 335. Runtime code deep audit: re-read every Rust implementation module in `src/` plus `sqlite-provider-sqlite3/src/lib.rs` and `sqlite-provider-abi/src/lib.rs`; check correctness, safety, boundary clarity, and hot-path allocation/copy behavior.
- [x] 336. Test/doc coverage audit: re-read Rust integration/unit tests, ABI tests, and Python suites; verify critical-path coverage and public API rustdoc completeness against stated standards.
- [x] 337. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands; capture blockers exactly if present.
- [x] 338. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then open questions/assumptions, standards assessment, design-goal conformance summary, and production-readiness verdict.
- [x] 339. Knowledge capture: append concrete findings and code-location facts for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 340. Progress/review bookkeeping + engineering sweep: update `WORK.md` statuses and dated Review Notes entry; after closing planned tasks, inspect current diffs for any additional production-quality improvements and record follow-up tasks if discovered.
- [x] 341. ABI module-boundary remediation planning: decompose `sqlite-provider-abi/src/lib.rs` into focused modules (parser/splitter, registry/bootstrap, exports, helpers, tests) while preserving symbol behavior and minimizing regression risk.
- [x] 342. Public API docs polish: add missing field-level rustdoc for public metadata/hook payload structs in `src/provider.rs` and `src/connection/hooks.rs`.
- [x] 343. Design/implementation traceability sync: update `sqlite-provider.md` SPI sketch so it explicitly includes `prepare_v2`, `bind_text_bytes`, and `result_text_bytes`.
- [x] 344. Follow-up verification module: rerun core validation commands and refresh `sqlite-provider-review.md`/knowledge once tasks 341-343 are complete.
- [x] 345. New review intake (2026-02-19 current detailed design-doc implementation audit request): re-read `WORK.md`, `.codex/knowledge` review notes, and `sqlite-provider.md`, then verify current workspace review artifact state before auditing.
- [x] 346. Deep implementation/parity audit: re-open core/ABI/adapter/test code paths with focus on SQLite C-API behavioral parity, and run targeted shim-vs-system probes for high-risk lifecycle semantics (`close_v2` and NULL-handle entrypoints).
- [x] 347. Validation evidence refresh: run cargo/package tests, clippy, ABI build, black-box Python tests, and sqlite-provider Python fallback suite on current workspace state.
- [x] 348. Review artifact + knowledge delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings and standards assessment, then append concrete facts/probe outputs/code locations in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`.
- [x] 349. Progress/review bookkeeping: update `WORK.md` Agent Work Progress completion status and append dated `Review Notes` entry for this pass.
- [x] 350. Remediation intake (2026-02-19 fix-all request): map active findings from `sqlite-provider-review.md` (`sqlite3_close_v2` lifecycle parity and NULL-handle cleanup semantics) to ABI implementation + regression-test changes.
- [x] 351. ABI lifecycle remediation: implement SQLite-compatible `sqlite3_close_v2` zombie semantics (defer close until outstanding statements are finalized) without eagerly finalizing/freeing statement handles.
- [x] 352. NULL-handle semantics remediation: align `sqlite3_close`, `sqlite3_close_v2`, `sqlite3_finalize`, and `sqlite3_reset` to return `SQLITE_OK` for null handles.
- [x] 353. Regression coverage module: add focused ABI unit/e2e tests for deferred `close_v2` behavior and null-handle cleanup return codes.
- [x] 354. Validation pass: run cargo tests, clippy, ABI build, and Python black-box/fallback suites on the remediated state.
- [x] 355. Artifact refresh: update `sqlite-provider-review.md` to reflect remediation closure and any residual risks.
- [x] 356. Knowledge/progress bookkeeping: append concrete remediation facts/validation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and update `WORK.md` Review Notes.
- [x] 357. New review intake (2026-02-20 current request): read `WORK.md` Feature Request + Agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before evaluating implementation quality.
- [x] 358. Full implementation audit: re-read all runtime modules (`src/`, `src/connection/*`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python test suites line-by-line; trace safety/FFI/ownership behavior and design-goal alignment with explicit evidence.
- [x] 359. Standards-conformance analysis: evaluate simplicity, module boundaries, public rustdoc coverage, critical test coverage, performance/allocation behavior in hot paths, and production-readiness; identify severity-ordered discrepancies and backward-compatibility risks.
- [x] 360. Validation evidence pass: run current verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands); capture blockers exactly if any.
- [x] 361. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first structure (severity ordered), then assumptions/open questions, design-goal assessment, discrepancy summary, and overall readiness verdict.
- [x] 362. Knowledge capture: append concrete findings, file locations, and validation outcomes for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-20.md` (new dated entry) and related knowledge files as needed.
- [x] 363. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry summarizing this pass.
- [x] 364. Post-completion engineering sweep: compare current workspace state and review findings to identify any additional production-quality follow-ups; record new actionable items in Agent Work Plan if discovered.
- [x] 365. Remediation intake (2026-02-20 parity/doc follow-up): map active review findings to concrete ABI and documentation changes with minimal API-surface churn.
- [x] 366. ABI version-query parity remediation: align `sqlite3_libversion` and `sqlite3_libversion_number` behavior with SQLite pre-initialization semantics.
- [x] 367. Null-handle error-path parity remediation: align `sqlite3_errcode(NULL)`, `sqlite3_extended_errcode(NULL)`, and `sqlite3_errmsg(NULL)` behavior with system SQLite.
- [x] 368. ABI helper parity remediation: align delimiter-only `sqlite3_prepare_v2` tail semantics and `sqlite3_errstr` text table outputs with SQLite-compatible behavior.
- [x] 369. Public rustdoc coverage remediation: reduce missing-docs warnings on public API surface (`src/provider.rs`, `src/value.rs`, `src/connection/hooks.rs`, `src/vtab.rs`, related exports) without adding redundant comments.
- [x] 370. Regression coverage module: add focused tests/probes for each parity remediation to lock behavior against future regressions.
- [x] 371. Validation and artifact refresh: rerun cargo/clippy/ABI black-box/Python suites, refresh `sqlite-provider-review.md` and `.codex/knowledge`, and update `WORK.md` progress/review notes.
- [x] 372. Post-remediation engineering sweep: inspect the final diff and re-check production-quality concerns (correctness/perf/readability/test coverage); record any additional follow-up tasks if discovered.
- [x] 373. Panic-containment remediation intake (2026-02-20 follow-up): map the high-severity FFI panic-leak finding to concrete ABI-layer changes, identifying the narrowest place to enforce catch semantics across exported entrypoints.
- [x] 374. ABI panic-shield implementation: add centralized `catch_unwind` guard helpers in `sqlite-provider-abi` object-safe provider adapters (`AbiCore`/`AbiHooks`/`AbiBackup`/`AbiBlobIo`/`AbiSerialize`/`AbiWal`/`AbiMetadata`/`AbiExtras`) so panics in backend provider implementations are converted to SQLite-compatible error/default returns instead of unwinding across FFI.
- [x] 375. Regression coverage for panic containment: extend ABI tests with panic-in-provider scenarios (e.g., `open`, `errcode`) and assert exported C APIs return stable SQLite error codes while process/test execution continues.
- [x] 376. Validation pass: run formatter, ABI/core/package tests, clippy, and make-target-equivalent black-box/Python suites to ensure panic-shield changes introduce no regressions.
- [x] 377. Knowledge/artifact refresh: append concrete remediation evidence and code locations in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, and reconcile review output status.
- [x] 378. Progress/review bookkeeping: mark completion status and append a dated `Review Notes` entry summarizing this panic-containment remediation pass.
- [x] 379. Panic-regression test hardening intake (2026-02-20 follow-up): investigate failing panic-containment unit tests caused by global provider registration order (`OnceLock`) and capture deterministic validation approach.
- [x] 380. Deterministic panic-regression remediation: update `sqlite-provider-abi/src/tests.rs` panic tests to exercise panic-shielded `AbiCore` adapter calls directly (open/errcode) instead of depending on global provider replacement.
- [x] 381. Revalidation/bookkeeping: rerun `cargo test -p sqlite-provider-abi` and update knowledge/review notes with the test-hardening rationale and outcomes.
- [x] 382. New review intake (2026-02-20 current detailed design-doc implementation review request): re-read `WORK.md` Feature Request + agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 383. Requirement traceability refresh: map every active `sqlite-provider.md` design commitment (architecture, SPI, wrapper semantics, extension/vtab lifecycle, safety goals, and testing expectations) to concrete implementation/test locations.
- [x] 384. Full codebase deep audit: re-read all runtime/test files (`src/`, `src/connection/*`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, `tests/`, `sqlite-provider-abi/tests/`, Python suites and test runner scripts) and trace FFI ownership/lifetime/error behavior end-to-end.
- [x] 385. Standards/performance assessment: evaluate simplicity, module boundaries, rustdoc coverage on public APIs, critical-path test coverage, hot-path allocation/copy behavior, and backward-compatibility implications; rank discrepancies by severity.
- [x] 386. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands; record exact outcomes and blockers.
- [x] 387. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 388. Knowledge capture: append concrete findings, code locations, and validation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md` and related knowledge files as needed.
- [x] 389. Progress/review bookkeeping: update `WORK.md` Agent Work Progress status entries and add a dated `Review Notes` summary for this pass.
- [x] 390. Post-completion engineering sweep: inspect current workspace diffs against the traceability matrix and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 391. Remediation intake (2026-02-20 fix-all request): map each active finding in `sqlite-provider-review.md` (ABI extras parity gap and public-doc suppressions) to concrete code/test/doc changes.
- [x] 392. ABI extras parity remediation: implement `Sqlite3AbiExtras` in `sqlite-provider-sqlite3`, wire default backend registration to include `.with_extras(api)` in `sqlite-provider-abi/src/state.rs`, and keep behavior allocation-light.
- [x] 393. Regression coverage for extras APIs: add focused ABI/default-backend tests validating `sqlite3_changes`, `sqlite3_total_changes`, `sqlite3_last_insert_rowid`, `sqlite3_stmt_readonly`, and bind-parameter helpers return backend values (not fallback defaults).
- [x] 394. Public rustdoc remediation: remove remaining broad `#[allow(missing_docs)]` suppressions on public exported surfaces and add concise, non-redundant docs for affected items.
- [x] 395. Validation pass: run formatter, cargo tests (workspace + package targets), clippy, rustdoc missing-docs check, and make-target-equivalent ABI/Python suites.
- [x] 396. Review/knowledge refresh: update `sqlite-provider-review.md` and `.codex/knowledge/sqlite-provider-review-2026-02-20.md` to reflect remediation status and evidence.
- [x] 397. Progress/review bookkeeping + engineering sweep: mark completion in `WORK.md`, append dated `Review Notes`, and record any further production-quality follow-ups if discovered.
- [x] 398. New review intake (2026-02-20 current detailed implementation/design audit request): re-read `WORK.md` instructions, `sqlite-provider.md`, and existing `.codex/knowledge` review notes before evaluating current code.
- [x] 399. Full implementation audit: re-read all runtime modules (`src/`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python test suites; map behavior against design goals and quality standards.
- [x] 400. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, rustdoc missing-docs check, and make-target-equivalent ABI/Python commands on current workspace state.
- [x] 401. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, followed by design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 402. Knowledge capture: append concrete code-location findings and validation results to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 403. Progress/review bookkeeping: update `WORK.md` Agent Work Progress completion entries and append a dated Review Notes summary for this pass.
- [x] 404. Post-completion engineering sweep: review remaining diffs against the design traceability matrix and record any additional production-quality follow-up items (or explicitly confirm none).
- [x] 405. Remediation intake (2026-02-20 fix-all from current review file): map each active finding in `sqlite-provider-review.md` to concrete code/test changes and validation expectations.
- [x] 406. Public API docs remediation: remove broad `missing_docs` suppression from unsafe extension traits in `src/provider.rs` and add concise method-level rustdoc for required public unsafe SPI methods.
- [x] 407. Keying-wrapper coverage remediation: extend `tests/integration.rs` mock backend with `Sqlite3Keying` behavior and add focused tests for `Connection::open_with_key` success + `rekey`, plus key-failure cleanup semantics.
- [x] 408. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and `RUSTDOCFLAGS='-Wmissing-docs' cargo doc -p sqlite-provider --no-deps`.
- [x] 409. Black-box validation pass: run `make test-abi-blackbox` and `make test-sqlite-provider-py` to confirm no ABI/Python regressions.
- [x] 410. Review artifact refresh: update `sqlite-provider-review.md` to reflect remediation closure and any residual risks.
- [x] 411. Knowledge capture: append concrete remediation facts and validation outputs to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 412. Progress/review bookkeeping + engineering sweep: mark completion in `WORK.md`, append dated Review Notes for this pass, and record any further production-quality follow-ups if discovered.
- [x] 413. New review intake (2026-02-20 current detailed implementation/design audit request): re-read `WORK.md` instructions, existing `.codex/knowledge` review history, and `sqlite-provider.md` end-to-end before auditing.
- [x] 414. Requirement traceability refresh: map each active `sqlite-provider.md` design goal (architecture, SPI, wrappers, UDF/vtab lifecycle, safety/performance targets) to concrete code and test locations across the workspace.
- [x] 415. Full implementation/test deep audit: re-read all runtime and test modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, Python suites, scripts) and identify concrete discrepancies.
- [x] 416. Standards/quality assessment: evaluate simplicity/module boundaries, public rustdoc coverage, critical-path tests, hot-path allocation/copy behavior, and backward-compatibility risks from current changes.
- [x] 417. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, rustdoc missing-docs check, and make-target-equivalent ABI/Python commands; record exact outcomes/blockers.
- [x] 418. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then assumptions/questions, design-goal conformance, discrepancy summary, and production-readiness verdict.
- [x] 419. Knowledge capture: append concrete findings, code locations, and validation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 420. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress status, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-ups (or explicitly confirm none).
- [x] 421. Remediation intake (2026-02-20 current request): read `sqlite-provider-review.md`, confirm active findings, and map the remaining issue to concrete code/doc/test changes.
- [x] 422. ABI public-doc remediation module: add concise rustdoc coverage for `sqlite-provider-abi` public surfaces (object-safe SPI traits, provider-state builder APIs, and exported ABI entrypoints) sufficient to satisfy `-Wmissing-docs`.
- [x] 423. Validation pass (docs + regressions): run `RUSTDOCFLAGS='-Wmissing-docs' cargo doc -p sqlite-provider-abi --no-deps` plus core regression targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands).
- [x] 424. Review artifact refresh: update `sqlite-provider-review.md` to reflect closure of all active findings and residual risk status.
- [x] 425. Knowledge/progress bookkeeping + engineering sweep: append concrete remediation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, mark completion in `WORK.md`, and record any additional production-quality follow-ups (or explicitly confirm none).
- [x] 426. New review intake (2026-02-20 current detailed design-doc implementation review request): read `WORK.md` Feature Request + instructions, review existing `.codex/knowledge` entries, and read `sqlite-provider.md` completely before auditing.
- [x] 427. Requirement traceability refresh: map each active design commitment in `sqlite-provider.md` (architecture, SPI, wrappers, UDF/vtab lifecycle, safety/performance goals) to concrete implementation and test locations.
- [x] 428. Full implementation/test deep audit: re-read runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and Rust/Python test suites end-to-end; record concrete discrepancy candidates with file/line evidence.
- [x] 429. Validation evidence refresh: run current regression/lint/doc targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, rustdoc missing-docs checks, and make-target-equivalent ABI/Python commands) and capture exact outcomes/blockers.
- [x] 430. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then assumptions/open questions, standards/design-goal conformance summary, discrepancy list, and production-readiness assessment.
- [x] 431. Knowledge capture: append concrete findings, traceability notes, and validation outputs in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 432. Progress/review bookkeeping + engineering sweep: mark completion in `WORK.md`, append dated `Review Notes`, and record any additional production-quality follow-ups discovered after comparing final diffs to the traceability matrix.
- [x] 433. Post-review follow-up intake (new task): map the low-severity safety-surface gap (`Connection::progress_handler` public `unsafe`) to a concrete safe-wrapper design that preserves existing callback ABI compatibility.
- [x] 434. Safe API remediation module (new task): add a safe progress-handler registration API with RAII-managed callback state and deterministic unregister semantics.
- [x] 435. Regression coverage module (new task): add concise tests for progress-handler registration/unregistration and failure-path cleanup.
- [x] 436. Validation and bookkeeping (new task): run cargo/package/lint/doc/ABI-Python targets after progress-handler follow-up and update review/knowledge artifacts accordingly.
- [x] 437. New review intake (2026-02-20 current request): read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before starting the implementation review.
- [x] 438. Requirement traceability refresh: map each design goal in `sqlite-provider.md` (architecture, SPI, safety/lifetimes, UDF/vtab lifecycle, extension surfaces, and performance expectations) to concrete runtime/test code locations.
- [x] 439. Full implementation/test deep audit: re-read all workspace runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and Rust/Python tests end-to-end; capture discrepancies with file/line evidence.
- [x] 440. Standards assessment and risk ranking: evaluate simplicity, module boundaries, public rustdoc coverage, critical-path test coverage, hot-path allocation/copy behavior, and compatibility risks; rank findings by severity.
- [x] 441. Validation evidence refresh: run regression/lint/doc targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and record exact outcomes.
- [x] 442. Review artifact delivery: write `sqlite-provider-review.md` with findings-first ordering, discrepancy mapping against `sqlite-provider.md`, and an overall production-readiness assessment.
- [x] 443. Knowledge capture: append concrete review facts and code locations to `.codex/knowledge/sqlite-provider-review-2026-02-20.md` and any related knowledge files used in this pass.
- [x] 444. Progress/review bookkeeping + engineering sweep: mark task completion in `WORK.md`, append dated `Review Notes`, and record any additional follow-up tasks if discovered during final diff inspection.
- [x] 445. Post-review remediation intake (new follow-up task): map each active finding from `sqlite-provider-review.md` to concrete ABI/adapter code paths and define minimal-risk fix ordering.
- [x] 446. Adapter bind-error safety remediation (new follow-up task): remove duplicate frees in `sqlite-provider-sqlite3` bind error paths so SQLite-owned destructor contracts are respected and crash risk is eliminated.
- [x] 447. ABI context-handle parity remediation (new follow-up task): make `sqlite3_context_db_handle` return a valid shim `sqlite3*` handle (not backend-private pointer), with clear ownership/lifetime rules.
- [x] 448. ABI `sqlite3_malloc64` contract remediation (new follow-up task): correct 64-bit size handling/signature and add overflow/large-size parity tests against system SQLite behavior.
- [x] 449. ABI `sqlite3_sleep` parity remediation (new follow-up task): align exported function signature/return semantics with SQLite (`int` elapsed milliseconds) and add black-box coverage.
- [x] 450. Regression + validation follow-up (new follow-up task): add targeted crash/parity tests for tasks 446-449, rerun full validation suite, and refresh review/knowledge artifacts.
- [x] 451. Post-remediation engineering sweep (new follow-up task): inspect final diffs against design constraints (simplicity, module boundaries, hot-path allocation behavior, ABI compatibility risk) and record any additional improvements or confirm none.
- [x] 452. New review intake (2026-02-20 current user request): read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing implementation.
- [x] 453. Requirement traceability refresh: map design commitments from `sqlite-provider.md` (architecture, safety/performance goals, SPI/extension coverage, UDF/vtab lifecycle) to concrete implementation/test locations.
- [x] 454. Full runtime/test audit: re-read all implementation and test files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, Python suites, scripts) and capture concrete discrepancy candidates with file/line evidence.
- [x] 455. Standards assessment: evaluate simplicity/module boundaries, public rustdoc coverage, critical-path test coverage, hot-path allocation/copy behavior, and backward-compatibility impact for any ABI/file-format-relevant changes.
- [x] 456. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python commands.
- [x] 457. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 458. Knowledge capture: append detailed facts (code locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 459. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry for this pass.
- [x] 460. Post-completion engineering sweep: inspect final workspace state against design constraints and record any additional production-quality follow-ups (or explicitly confirm none).
- [x] 461. Review-fix intake (2026-02-20 current request): map active findings from `sqlite-provider-review.md` to concrete ABI/header code paths and define a minimal-risk remediation sequence.
- [x] 462. Callback-signature hardening module: replace erased `extern \"C\" fn()` ABI callback parameters/transmutes with exact callback signatures in `sqlite-provider-abi/src/exports.rs` and `sqlite3.h`.
- [x] 463. Allocator-contract remediation module: extend ABI core object-safe trait surface with allocator hooks and route `sqlite3_malloc64`/`sqlite3_free` through provider allocators when available, with deterministic fallback policy.
- [x] 464. Allocator-ownership tracking module: add pointer-ownership bookkeeping in ABI state so `sqlite3_free` can dispatch to the correct deallocator (`provider.free` vs libc) without ambiguity for shim-allocated buffers.
- [x] 465. Regression coverage module: update/add focused tests for typed callback registration call paths and provider-allocator usage in `sqlite-provider-abi` unit/end-to-end suites.
- [x] 466. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 467. Review artifact + knowledge refresh: update `sqlite-provider-review.md` to close remediated findings and append concrete implementation/validation facts to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 468. Progress/review bookkeeping + engineering sweep: mark completion status for this follow-up in `WORK.md`, append a dated `Review Notes` entry, and record any additional production-quality follow-ups (or explicitly confirm none).
- [x] 469. New review intake (2026-02-20 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 470. Full implementation + standards audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and test suites; evaluate simplicity, module boundaries, docs, critical-path coverage, and hot-path behavior with explicit evidence.
- [x] 471. Validation and parity evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make`-based Python suites, and targeted shim-vs-system parity probes for any suspected ABI gaps.
- [x] 472. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings, design-goal/discrepancy assessment, and production-readiness verdict.
- [x] 473. Knowledge/progress bookkeeping: append concrete findings and validation facts to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, and update `WORK.md` Agent Work Progress / Review Notes.
- [x] 474. Post-completion engineering sweep: compare final findings against current diffs and record any additional production-quality follow-ups (or explicitly confirm none).
- [x] 475. Review-fix intake (2026-02-20 current request): read active findings in `sqlite-provider-review.md` and map each remaining issue to concrete SPI/ABI/adapter code paths.
- [x] 476. Collation API remediation module: implement `sqlite3_create_collation_v2` through provider SPI + ABI object-safe core + exported entrypoint, preserving SQLite callback signatures and ownership semantics.
- [x] 477. Adapter/backend wiring module: add dynamic `sqlite3_create_collation_v2` symbol loading/forwarding in `sqlite-provider-sqlite3` and synchronize local `sqlite3.h` declaration.
- [x] 478. Regression coverage module: add focused ABI end-to-end and black-box tests proving collation registration works and affects ordering as expected.
- [x] 479. Validation + parity verification: run formatter, cargo/package tests, clippy, strict rustdoc checks, make-based suites, and a direct shim-vs-system `sqlite3_create_collation_v2` probe.
- [x] 480. Artifact/knowledge/progress refresh: update `sqlite-provider-review.md`, append concrete remediation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, and record completion in `WORK.md` Review Notes.
- [x] 481. Post-completion engineering sweep: inspect final diffs for any additional production-quality follow-ups (or explicitly confirm none).
- [x] 482. New review intake (2026-02-20 current detailed implementation/design audit request): re-read `WORK.md` instructions, existing `.codex/knowledge` review history, and `sqlite-provider.md` completely before auditing.
- [x] 483. Requirement traceability refresh: map each active design commitment in `sqlite-provider.md` (architecture, SPI wrappers, safety/lifetime expectations, extension/vtab lifecycle, and performance goals) to concrete implementation/test locations.
- [x] 484. Full implementation/test deep audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python test suites line-by-line; trace ownership, panic containment, and ABI parity-sensitive paths end-to-end.
- [x] 485. Standards and discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical test coverage, hot-path allocation/copy behavior, and backward-compatibility implications; rank discrepancies by severity with file/line evidence.
- [x] 486. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python suites.
- [x] 487. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity ordered), then assumptions/open questions, design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 488. Knowledge capture: append concrete findings, code locations, and validation/parity outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 489. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated `Review Notes` entry for this pass.
- [x] 490. Post-completion engineering sweep: inspect current workspace diffs against design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 491. Review-fix intake (2026-02-20 current request): re-read active findings in `sqlite-provider-review.md` and map both remaining issues (default optional-capability bootstrap gap + ABI doc suppression gap) to concrete code/test/doc changes.
- [x] 492. Adapter optional-capability module: implement `Sqlite3Hooks`, `Sqlite3Backup`, `Sqlite3BlobIo`, `Sqlite3Serialize`, and `Sqlite3Wal` for `LibSqlite3` in `sqlite-provider-sqlite3/src/lib.rs` with symbol loading and SQLite-compatible error mapping.
- [x] 493. Default bootstrap wiring module: update `sqlite-provider-abi/src/state.rs` default-provider registration to include hooks/backup/blob/serialize/WAL alongside existing metadata/extras.
- [x] 494. ABI docs remediation module: remove broad `missing_docs` suppressions in `sqlite-provider-abi/src/lib.rs` and `sqlite-provider-abi/src/exports.rs`, replacing with method-level/visibility-safe documentation strategy.
- [x] 495. Regression coverage module: add focused tests that verify optional default-backend APIs no longer return `SQLITE_MISUSE` (at minimum `sqlite3_busy_timeout`, plus additional optional API checks where practical).
- [x] 496. Validation pass: run formatter, cargo workspace/package tests, clippy, strict rustdoc for core+ABI crates, and make-target-equivalent ABI/Python suites.
- [x] 497. Review artifact refresh: update `sqlite-provider-review.md` to close remediated findings and reflect residual-risk status.
- [x] 498. Knowledge capture: append concrete remediation evidence (file locations, behavior changes, validation output) to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 499. Progress/review bookkeeping: mark completion status for tasks 491-498 in `WORK.md` and add a dated `Review Notes` entry for this follow-up.
- [x] 500. Post-completion engineering sweep: inspect final diffs for additional production-quality opportunities (correctness/perf/readability/test coverage) and record any new follow-up tasks or explicit none-found outcome.
- [x] 501. New review intake (2026-02-20 current detailed design-doc implementation review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 502. Requirement traceability refresh: map active `sqlite-provider.md` commitments (architecture, SPI + extensions, wrapper lifetimes, UDF/vtab safety, and performance goals) to concrete implementation/test locations.
- [x] 503. Full implementation/test deep audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`) and all Rust/Python suites end-to-end; identify concrete discrepancies with file/line evidence.
- [x] 504. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python commands on current workspace state.
- [x] 505. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then standards/design-goal assessment, discrepancy summary, and overall production-readiness verdict.
- [x] 506. Knowledge capture: append concrete findings, code locations, and validation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 507. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and add a dated `Review Notes` entry for this pass.
- [x] 508. Post-completion engineering sweep: compare final findings to current diffs and record additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 509. Follow-up remediation intake (new task from this review): map ABI test-race finding (`sqlite-provider-abi/src/tests.rs` panic toggles vs `register_and_open`) to a deterministic test-isolation fix plan.
- [x] 510. Test-stability remediation module (new task): remove panic-toggle race in ABI unit tests by serializing affected tests or replacing global toggles with scoped per-test injection.
- [x] 511. Review verification intake (2026-02-20 current handoff): re-read `WORK.md` instructions, existing `.codex/knowledge` review facts, and `sqlite-provider.md` fully before finalizing the review artifact status.
- [x] 512. Active-finding revalidation: re-open `sqlite-provider-abi/src/tests.rs` panic-toggle and `register_and_open` paths and confirm race preconditions still exist with current line-level evidence.
- [x] 513. Flake-stability check: run repeated `cargo test -p sqlite-provider-abi` loops to measure immediate reproducibility of the race and capture exact outcomes.
- [x] 514. Sanity sweep: scan runtime/ABI/adapter code for obvious unresolved stubs/doc suppressions (`SQLITE_MISUSE` placeholders, `allow(missing_docs)`, TODO/unimplemented) that could invalidate the review summary.
- [x] 515. Review artifact refresh: update `sqlite-provider-review.md` if new evidence changes severity/impact framing; otherwise keep findings unchanged and record verification evidence.
- [x] 516. Knowledge capture: append concrete 2026-02-20 verification facts (commands, outcomes, code locations) to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 517. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated Review Notes entry for this verification pass.
- [x] 518. Review-fix intake (2026-02-20 current request): map the active ABI race finding in `sqlite-provider-review.md` to concrete test-isolation edits in `sqlite-provider-abi/src/tests.rs`.
- [x] 519. Test-isolation remediation module: serialize `register_and_open` with the panic-toggle lock and add scoped panic-toggle reset guards so panic flags are always restored.
- [x] 520. Stability validation module: run repeated `cargo test -p sqlite-provider-abi` loops to confirm nondeterminism is removed in practice.
- [x] 521. Regression validation module: run broader regression checks (`cargo test`, package tests, clippy, and make-target-equivalent suites as needed) after the test fix.
- [x] 522. Artifact refresh: update `sqlite-provider-review.md` and `.codex/knowledge/sqlite-provider-review-2026-02-20.md` to close remediated findings with evidence.
- [x] 523. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated Review Notes entry for this remediation pass.
- [x] 524. New review intake (2026-02-20 current detailed design-doc implementation review request): re-read `WORK.md` instructions, existing `.codex/knowledge` review artifacts, and `sqlite-provider.md` completely before auditing.
- [x] 525. Full implementation/test audit: re-read all runtime and test code (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust tests, Python suites, and scripts) and trace design-goal conformance with concrete file/line evidence.
- [x] 526. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core/ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 527. Discrepancy assessment: evaluate simplicity/module boundaries/docs/test coverage/hot-path behavior and identify active design or production-readiness gaps with severity ranking.
- [x] 528. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), then standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 529. Knowledge capture: append concrete findings, code locations, and validation outputs for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 530. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated `Review Notes` entry for this pass.
- [x] 531. Post-completion engineering sweep: inspect current workspace diffs against design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 532. New review intake (2026-02-20 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 533. Callback-safety discrepancy audit: trace progress-handler callback flow across core/SPI/adapter/ABI layers, verify panic-containment behavior against `sqlite-provider.md` requirements, and capture concrete file/line evidence.
- [x] 534. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core/ABI crates, and make-target-equivalent ABI/Python suites.
- [x] 535. Review artifact delivery: rewrite `sqlite-provider-review.md` with severity-ordered findings first, then standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 536. Knowledge capture: append this pass facts (scope, finding evidence, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`.
- [x] 537. Progress/review bookkeeping + engineering sweep: update `WORK.md` Agent Work Progress statuses, append a dated `Review Notes` entry for this pass, and record any extra follow-up tasks (or explicitly none).
- [x] 538. Review-fix intake (2026-02-20 current request): map the active progress-callback panic-safety finding from `sqlite-provider-review.md` to concrete code/test updates across core/SPI/adapter/ABI layers.
- [x] 539. Progress-callback safety remediation module: add panic-contained progress trampoline/state in `src/connection/hooks.rs`, switch safe API registration to closure-based routing, and retain raw callback path only as explicitly unsafe.
- [x] 540. Signature-alignment remediation module: update progress callback signature to context-aware form (`int (*)(void*)`) across `src/provider.rs`, `sqlite-provider-abi/src/lib.rs`, `sqlite-provider-abi/src/exports.rs`, `sqlite-provider-sqlite3/src/lib.rs`, and `sqlite3.h`.
- [x] 541. Regression coverage module: update/add integration tests for progress registration/unregistration and panic containment behavior.
- [x] 542. Validation pass: run formatter, cargo/package tests, clippy, strict rustdoc checks for core+ABI crates, and make-target-equivalent ABI/Python suites.
- [x] 543. Artifact/knowledge/progress refresh + engineering sweep: update `sqlite-provider-review.md`, append remediation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-20.md`, mark progress completion in `WORK.md`, and record whether any additional follow-up tasks remain.
- [x] 544. New review intake (2026-02-21 current detailed implementation/design review request): re-read `WORK.md` Feature Request + agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 545. Requirement traceability refresh: map each `sqlite-provider.md` commitment (architecture, SPI boundaries, safety/panic constraints, wrapper lifetimes, optional extension behavior, and performance goals) to concrete implementation/test locations.
- [x] 546. Full implementation/test deep audit: re-read all runtime and test modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust integration/unit tests, Python suites, and scripts) and identify concrete discrepancies with file/line evidence.
- [x] 547. Standards assessment: evaluate simplicity, module single-responsibility boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and any compatibility impact from current API/ABI surfaces.
- [x] 548. Validation evidence refresh: run current verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
- [x] 549. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered), followed by assumptions/open questions, design-goal conformance summary, discrepancy list, and production-readiness verdict.
- [x] 550. Knowledge capture: append concrete findings, code locations, and validation outputs for this pass in `.codex/knowledge/sqlite-provider-review-2026-02-21.md` (new dated entry) and related knowledge files if needed.
- [x] 551. Progress/review bookkeeping: update `WORK.md` Agent Work Progress statuses and append a dated `Review Notes` entry summarizing this pass.
- [x] 552. Post-completion engineering sweep: compare final review findings with current workspace diffs and design traceability, then record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 553. Review-fix intake (2026-02-21 follow-up from current review): map the progress-callback panic fail-open discrepancy to concrete core/adapter/test changes.
- [x] 554. Progress-callback failure-mode remediation: update `src/connection/hooks.rs` panic path so the safe progress trampoline interrupts execution (non-zero return) and align docs/comments with SQLite semantics.
- [x] 555. Regression coverage remediation: update/add integration tests in `tests/integration.rs` to assert panic in safe progress callbacks yields interrupt semantics rather than continue semantics.
- [x] 556. Validation pass for remediation: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, and make-target-equivalent ABI/Python suites.
- [x] 557. Artifact/knowledge/progress refresh: update `sqlite-provider-review.md`, append remediation evidence in `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and update `WORK.md` statuses/review notes.
- [x] 558. New review intake (2026-02-21 current user request): re-read `WORK.md` Feature Request + instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 559. Requirement-to-code traceability matrix refresh: map every design commitment in `sqlite-provider.md` (architecture, SPI boundaries, wrapper safety/lifetimes, extension framework, vtab lifecycle/safety, and performance goals) to concrete source/test locations.
- [x] 560. Full codebase deep-read audit: read all implementation and test files end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/lib.rs`, Rust/Python/black-box tests, scripts) and capture severity-ranked issues with concrete line-level evidence.
- [x] 561. Standards assessment pass: evaluate simplicity, single-responsibility module boundaries, rustdoc coverage for public APIs, critical-path test sufficiency, hot-path allocation/copy behavior, and compatibility implications of current API/ABI behavior.
- [x] 562. Validation evidence refresh: run verification targets (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and record exact outcomes/blockers.
- [x] 563. Review artifact delivery: write a refreshed `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), followed by assumptions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 564. Knowledge capture: append concrete review facts, file locations, and validation outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-21.md` (and related knowledge files if needed).
- [x] 565. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses and append a dated `Review Notes` entry; then compare findings against workspace diffs/design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 566. Follow-up remediation task (from 2026-02-21 review): reconcile `sqlite-provider.md` virtual-table trait signatures with the current provider-generic public API (`VirtualTable<P>`, `VTabCursor<P>`) and typed error mapping.
- [x] 567. Follow-up engineering task (from 2026-02-21 review): refactor `sqlite-provider-sqlite3/src/lib.rs` into smaller modules (loader/symbol table, core SPI impl, optional extension impls) to improve single-responsibility boundaries and maintainability while preserving behavior.
- [x] 568. Validation/closure pass for follow-up tasks `566-567`: rerun targeted and full validation commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and confirm no regressions after the adapter module split.
- [x] 569. Knowledge/progress closure: update `.codex/knowledge` entries with exact code locations for the adapter module split and append a dated `Review Notes` entry summarizing remediation completion status and any further follow-up items (or explicitly none).
- [x] 570. New review intake (2026-02-21 current request): re-read `WORK.md` Feature Request + agent instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 571. Requirement-to-code traceability refresh: map all design commitments in `sqlite-provider.md` (architecture, SPI boundaries, safety/lifetimes, extension framework, virtual-table lifecycle, and performance goals) to concrete source/test locations.
- [x] 572. Full implementation/test deep audit: re-read all runtime/test modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust integration/unit tests, Python suites, scripts) and identify concrete issues with file/line evidence.
- [x] 573. Standards assessment pass: evaluate simplicity, single-responsibility module boundaries, public API documentation coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and compatibility implications.
- [x] 574. Validation evidence refresh: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`; capture exact outcomes/blockers.
- [x] 575. Review artifact delivery: write refreshed `sqlite-provider-review.md` with findings-first ordering (severity-ranked, file/line referenced), then assumptions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 576. Knowledge capture: append concrete 2026-02-21 review facts, code locations, and validation outputs to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 577. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses and append a dated `Review Notes` entry; then inspect final diffs/traceability and record any new production-quality follow-up tasks (or explicitly confirm none).
- [x] 578. Follow-up remediation intake (from current review): map the remaining ABI/header compatibility findings (`sqlite3_progress_handler` prototype drift and `sqlite3_context_db_handle` header type drift) to concrete export/header updates.
- [x] 579. ABI signature-compat remediation: align `sqlite3_progress_handler` to canonical SQLite prototype compatibility in `sqlite-provider-abi/src/exports.rs` and `sqlite3.h`, including any required trait/signature plumbing updates across ABI/adapter/core layers.
- [x] 580. Header type-compat remediation: align local `sqlite3.h` declaration for `sqlite3_context_db_handle` to `sqlite3 *` and verify no call-site/type regressions in C-ABI tests.
- [x] 581. Closure validation + artifact refresh: rerun targeted/full validation commands, then refresh `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and `WORK.md` statuses/review notes for remediation outcome.
- [x] 582. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 583. Scope/delta framing: compare prior 2026-02-21 review conclusions against current workspace files to avoid stale findings and identify areas needing re-verification.
- [x] 584. Full implementation deep-read: re-read all code and tests end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, Python suites, scripts) and trace unsafe/lifetime/ownership boundaries.
- [x] 585. Standards/design-conformance assessment: evaluate simplicity, module responsibilities, public API docs, critical-path tests, hot-path allocation/copy behavior, and design-goal alignment with `sqlite-provider.md`; capture discrepancy evidence with file/line references.
- [x] 586. Validation evidence refresh: run the current verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc for core+ABI crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
- [x] 587. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity-ranked), then assumptions/open questions, standards/design-goal assessment, and production-readiness verdict.
- [x] 588. Knowledge capture: append concrete findings, code locations, and validation outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 589. Progress/review bookkeeping + engineering sweep: update `WORK.md` statuses and append a dated `Review Notes` entry summarizing outcomes and any newly discovered follow-up work (or explicitly none).
- [x] 590. Follow-up remediation intake (from current review): map the remaining ABI unit-test nondeterminism (`sqlite-provider-abi/src/tests.rs` panic toggles) to a deterministic isolation strategy that preserves existing panic-containment assertions.
- [x] 591. ABI test-isolation remediation: remove shared-toggle race windows by serializing all panic-toggle-sensitive tests (or replacing global toggles with scoped injection), while keeping test intent concise and readable.
- [x] 592. Validation pass for remediation: rerun `cargo test -p sqlite-provider-abi` with repeated-loop stress plus full workspace verification targets to confirm flake elimination without regressions.
- [x] 593. Artifact/knowledge closure for remediation: refresh `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and `WORK.md` statuses/review notes with concrete evidence.
- [x] 594. New review intake (2026-02-21 current request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 595. Design traceability refresh: map each design commitment in `sqlite-provider.md` (architecture, SPI abstraction, safety/lifetime contracts, extension/vtab behavior, and performance goals) to concrete source/test locations in current workspace.
- [x] 596. Full implementation deep-read audit: re-read all current runtime/test files end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust tests, Python suites, scripts) and identify discrepancies or risks with line-level evidence.
- [x] 597. Standards assessment pass: evaluate simplicity, module responsibility boundaries, public API documentation quality, critical-path test coverage, and hot-path allocation/copy behavior for production readiness.
- [x] 598. Validation evidence refresh: run the verification suite (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core+ABI crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact results/blockers.
- [x] 599. Review artifact delivery: write refreshed `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), followed by assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 600. Knowledge capture: append concrete 2026-02-21 review facts (code locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 601. Progress/review bookkeeping + engineering sweep: mark task statuses in `WORK.md`, append a dated `Review Notes` entry, and record any additional production-quality follow-up tasks discovered (or explicitly confirm none).
- [x] 602. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` review artifacts, and `sqlite-provider.md` completely before auditing.
- [x] 603. Requirement traceability refresh: map `sqlite-provider.md` commitments (architecture, SPI abstraction, lifetimes/safety, extension/vtab lifecycle, performance expectations) to concrete implementation/test locations.
- [x] 604. Full implementation deep audit: re-read runtime and test code end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust/Python suites, scripts) and capture discrepancies with line-level evidence.
- [x] 605. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for core/ABI crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
- [x] 606. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity-ranked, file/line referenced), then assumptions/open questions, standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 607. Knowledge capture: append concrete 2026-02-21 review facts (code locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 608. Progress/review bookkeeping + engineering sweep: mark tasks `602-607` complete in `WORK.md`, append a dated `Review Notes` entry, and record any follow-up production-quality tasks (or explicitly confirm none).
- [x] 609. Follow-up remediation intake (from current review): map remaining runtime-vs-header ABI compatibility mismatches (`sqlite3_create_function_v2`/`sqlite3_create_window_function` destroy callback type and `sqlite3_free_table` pointer depth) to concrete edits.
- [x] 610. Runtime ABI parity remediation: align export/SPI/adapter signatures for UDF/window destroy callbacks and `sqlite3_free_table` with canonical `sqlite3.h` declarations.
- [x] 611. Compatibility coverage pass: add/update targeted ABI tests (or compile-level checks) to ensure exported symbol signatures stay consistent with canonical `sqlite3.h`.
- [x] 612. Remediation closure: rerun validation targets and refresh `sqlite-provider-review.md`, `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, and `WORK.md` progress/review notes.
- [x] 613. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` artifacts, and full `sqlite-provider.md` before evaluating implementation quality.
- [x] 614. Requirement traceability refresh: map design commitments in `sqlite-provider.md` (architecture, SPI boundaries, wrapper safety/lifetimes, extension framework, virtual-table lifecycle, and performance goals) to concrete implementation/test locations.
- [x] 615. Full implementation deep audit: re-read all runtime/test files end-to-end (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust/Python test suites, scripts) and capture concrete discrepancies with line-level evidence.
- [x] 616. Standards and production-readiness assessment: evaluate simplicity, module single-responsibility boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and backward-compatibility implications.
- [x] 617. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
- [x] 618. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity-ranked with file/line references), followed by assumptions/open questions, design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 619. Knowledge capture: append concrete review facts, code locations, and validation outputs for this pass to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 620. Progress/review bookkeeping + engineering sweep: update `WORK.md` statuses and append a dated `Review Notes` entry, then record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 621. New remediation intake (current request): read `sqlite-provider-review.md` residual-risk items and map them to concrete implementation changes (pytest removal and parser-coverage hardening).
- [x] 622. Pytest-elimination module: remove runtime and test-source dependencies on `pytest` in `scripts/run_sqlite_provider_py.py` and `tests/sqlite_provider_py/*.py`, while preserving current scenario behavior and skip/exception semantics.
- [x] 623. Test-harness cleanup module: provide explicit in-repo skip signaling utilities in `tests/sqlite_provider_py/conftest.py` and make the Python suite runner strictly standalone (no import/probe of pytest).
- [x] 624. Parser-risk mitigation module: expand SQL parser compatibility coverage with additional trigger/CASE/nested-BEGIN regression tests in ABI unit/mock/e2e suites.
- [x] 625. Validation pass: rerun full verification (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) after remediation.
- [x] 626. Artifact refresh: update `sqlite-provider-review.md` to reflect closure of residual review issues and current no-dependency Python-test execution model.
- [x] 627. Knowledge/progress closure: append concrete remediation facts to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, mark progress items complete, and add a dated `Review Notes` entry.
- [x] 628. Post-remediation verification follow-up: re-verify no remaining executable `pytest` imports/usages across runtime test harness and Python suite paths.
- [x] 629. Evidence sync follow-up: rerun focused validation targets for remediated scope (`make test-sqlite-provider-py` and `cargo test -p sqlite-provider-abi`) and capture outcomes.
- [x] 630. Artifact consistency follow-up: refresh stale file:line references in `sqlite-provider-review.md` and append concrete follow-through facts to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 631. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` fully before auditing.
- [x] 632. Requirement traceability refresh: map current design commitments (architecture, SPI boundaries, wrapper safety/lifetimes, extension/vtab lifecycle, panic containment, performance goals) to concrete implementation/test locations.
- [x] 633. Full implementation deep audit: re-read all runtime modules (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`) and all Rust/Python test suites end-to-end; capture discrepancy candidates with line-level evidence.
- [x] 634. Standards and quality assessment: evaluate simplicity, module responsibility boundaries, public API rustdoc coverage, critical-path tests, hot-path allocation/copy behavior, and backward-compatibility impact.
- [x] 635. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and record exact outcomes/blockers.
- [x] 636. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity-ranked with file/line references), then assumptions/open questions, standards/design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 637. Knowledge capture: append concrete 2026-02-21 review facts (scope, file locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 638. Progress/review bookkeeping: update `WORK.md` progress statuses and append a dated `Review Notes` entry for this pass.
- [x] 639. Post-completion engineering sweep: compare findings against current workspace diffs/design traceability and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 640. Follow-up hardening intake (from 2026-02-21 review finding): map SPI ownership-contract ambiguity for UDF `user_data` teardown to concrete documentation/test updates.
- [x] 641. SPI contract documentation module: add explicit ownership/teardown semantics for `create_function_v2` and `create_window_function` (`user_data` transfer and `drop_user_data` exactly-once expectations) in public trait docs.
- [x] 642. Regression-test module: add a failing-provider registration test path validating deterministic callback-state cleanup behavior for UDF/window registration failure.
- [x] 643. Follow-up validation + artifact refresh: rerun targeted/full validation and refresh review/knowledge artifacts after hardening changes.
- [x] 644. Pytest-dependency elimination verification: re-scan executable test/harness paths and build orchestration to confirm zero runtime dependence on `pytest` remains.
- [x] 645. Pytest cleanup module (if needed): remove any residual executable references/imports to `pytest` and keep standalone Python test runner flow intact.
- [x] 646. Final validation and artifact closure: rerun impacted targets and update review/knowledge/progress notes for this fix-all request.
- [x] 647. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` review history, and `sqlite-provider.md` completely before auditing current implementation quality.
- [x] 648. Full implementation deep audit + traceability refresh: re-read all core/ABI/adapter/runtime test files end-to-end and map design commitments to concrete code locations, including unsafe ownership/lifetime boundaries.
- [x] 649. Discrepancy reproduction module: run focused runtime probes for suspected parity/safety gaps (`sqlite3_complete` vs system sqlite, `sqlite3_free_table` repeat-free behavior, and UDF registration failure-path ownership semantics).
- [x] 650. Standards and production-readiness assessment: evaluate simplicity/module boundaries, API documentation coverage, critical-path tests, hot-path allocation/copy behavior, and backward-compatibility impact.
- [x] 651. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity-ranked with file/line evidence), followed by design-goal conformance and production-readiness verdict.
- [x] 652. Knowledge capture: append concrete 2026-02-21 review facts (scope, file references, repro evidence, validation observations) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 653. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses and `Review Notes`, then record any additional production-quality follow-up work discovered in this pass.
- [x] 654. Fix-all intake (current request): re-read `sqlite-provider-review.md` and map each active finding to concrete code/test changes across ABI parser/exports and sqlite3 adapter ownership paths.
- [x] 655. ABI safety remediation: make `sqlite3_free_table` idempotent for repeated calls on the same variable by clearing the caller-owned table pointer after release.
- [x] 656. Parser parity remediation: harden trigger-statement splitting/completion so malformed trigger text without `END;` terminator boundary is marked incomplete like system sqlite.
- [x] 657. Ownership-contract remediation: ensure sqlite3 adapter registration pre-validation failures (interior NUL and unsupported window registration) invoke `drop_user_data` exactly once before returning `Err`.
- [x] 658. Regression coverage module: add/update focused tests for (a) `sqlite3_free_table` repeated-call safety, (b) malformed-trigger `sqlite3_complete` behavior, and (c) adapter failure-path user-data cleanup.
- [x] 659. Pytest elimination sweep: remove any remaining executable/runtime dependency on `pytest` in build/test runners and Python test paths, and verify repository runtime paths do not invoke/import pytest.
- [x] 660. Validation pass: run required verification (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`).
- [x] 661. Artifact refresh: update `sqlite-provider-review.md` to reflect remediation status and current active-findings verdict.
- [x] 662. Knowledge/progress closure: append concrete remediation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`, mark `WORK.md` progress entries complete, and add a dated `Review Notes` summary.
- [x] 663. New review intake (2026-02-21 current request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and full `sqlite-provider.md` before auditing.
- [x] 664. Complete deep-read scope closure: read all remaining pending runtime-test files and re-verify high-risk ABI ownership/destructor code paths with concrete line-level inspection.
- [x] 665. Parity verification module: run focused system-`libsqlite3` differential probes for null-pointer destructor behavior to confirm/deny suspected ABI mismatches before reporting findings.
- [x] 666. Full validation evidence refresh: run required verification targets (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes.
- [x] 667. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering, standards/design-goal assessment, discrepancy summary, validation evidence, and production-readiness verdict.
- [x] 668. Knowledge capture: append concrete 2026-02-21 review-pass facts (scope, probe outcomes, file locations, and command results) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 669. Progress/review bookkeeping: mark plan items `663-668` complete in `WORK.md` and append a dated `Review Notes` summary for this pass.
- [x] 670. Post-completion engineering sweep: compare review outcome against current workspace state and record whether any additional production-quality follow-up tasks remain.
- [x] 671. New review intake (2026-02-21 current detailed design-doc implementation review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 672. Full implementation and test deep-read audit: inspect all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`) with line-level traceability to design commitments.
- [x] 673. Standards and discrepancy assessment: evaluate simplicity, module responsibility boundaries, public API docs, critical-path test coverage, hot-path allocation/copy behavior, and backward-compatibility impacts; identify concrete findings with severity and evidence.
- [x] 674. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
- [x] 675. Review artifact delivery: write refreshed `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), followed by assumptions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 676. Knowledge capture: append concrete 2026-02-21 review-pass facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 677. Progress/review bookkeeping: mark tasks `671-676` complete in `WORK.md` and append a dated `Review Notes` summary for this pass.
- [x] 678. Post-completion engineering sweep: compare the refreshed review outcome against current workspace state and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 679. Fix-all intake (current request): re-read `sqlite-provider-review.md`, `WORK.md` instructions, and existing `.codex/knowledge` context; map each active finding to concrete implementation/test deltas.
- [x] 680. Canonical ABI compatibility remediation: align exported/public signatures to canonical SQLite for `sqlite3_create_function_v2` / `sqlite3_create_window_function` destroy callbacks (`void(*)(void*)`) and `sqlite3_free_table(char**)` across `sqlite3.h`, ABI exports, and call sites.
- [x] 681. Canonical `sqlite3_free_table` safety hardening: preserve repeated-call safety under the canonical `char**` signature by tracking shim-owned table allocations and ignoring duplicate frees safely.
- [x] 682. Regression alignment module: update and extend ABI tests for canonical destroy-callback semantics and canonical `sqlite3_free_table` call form; remove no-arg/triple-pointer contract assumptions.
- [x] 683. Optional ABI real-backend coverage module (Rust e2e): add concise smoke tests for backup, blob I/O, serialize/deserialize, WAL checkpoint, and table-column metadata paths.
- [x] 684. Optional ABI black-box coverage module (Python ctypes): add concise end-to-end optional-API smoke tests and required symbol prototype bindings for the same API families.
- [x] 685. Pytest dependency elimination verification: ensure executable/runtime/test runner paths do not import or invoke `pytest` and keep standalone runner flow intact.
- [x] 686. Validation and artifact closure: run full verification matrix, refresh `sqlite-provider-review.md` to reflect resolved findings, and append concrete facts to `.codex/knowledge` + `WORK.md` progress/review notes.
- [x] 687. New review intake (2026-02-21 current detailed implementation/design review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 688. Requirement traceability refresh: map design commitments (architecture, SPI boundaries, safety/lifetimes, extension/vtab behavior, and performance goals) to concrete code/test locations in current workspace.
- [x] 689. Full implementation/test deep audit: re-read all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust integration/unit tests, Python suites, scripts, `Makefile`) and collect concrete discrepancy candidates with line-level evidence.
- [x] 690. Standards and production-readiness assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and backward-compatibility risks.
- [x] 691. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
- [x] 692. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity ranked with file/line references), design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 693. Knowledge capture: append concrete 2026-02-21 review facts (scope, file locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 694. Progress/review bookkeeping: update `WORK.md` progress statuses and append a dated `Review Notes` entry for this pass.
- [x] 695. Post-completion engineering sweep: compare final findings against current workspace state and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 696. New review intake (2026-02-22 current detailed implementation/design review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 697. Full implementation/test deep audit + traceability refresh: re-read all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`, `sqlite3.h`) and map design commitments to concrete code locations.
- [x] 698. Standards and discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, panic/FFI safety boundaries, and backward-compatibility impact; identify concrete findings with severity/file evidence.
- [x] 699. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
- [x] 700. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), then assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 701. Knowledge capture: append concrete 2026-02-22 review facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
- [x] 702. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 703. Clippy warning intake (2026-02-22 follow-up): map reported `missing_safety_doc` and `unnecessary_cast` diagnostics to concrete call sites in `sqlite-provider-sqlite3/src/lib.rs`, `sqlite-provider-sqlite3/src/extensions_impl.rs`, and `sqlite-provider-abi/src/lib.rs`.
- [x] 704. Remediation module: add precise `# Safety` rustdoc sections for newly exposed unsafe ABI helper methods and remove redundant same-type raw-pointer casts while preserving FFI behavior.
- [x] 705. Validation pass (targeted Clippy): run `cargo clippy -p sqlite-provider-sqlite3 --lib` and `cargo clippy -p sqlite-provider-abi --lib` to confirm the reported warning set is cleared.
- [x] 706. Knowledge/progress closure: record concrete edits and validation outcomes in `.codex/knowledge/sqlite-provider-sqlite3.md` and `.codex/knowledge/sqlite-provider-abi.md`, then mark completion in `WORK.md`.
- [x] 707. Fix-all intake (2026-02-22 follow-up): re-read active findings in `sqlite-provider-review.md` and map callback-lifecycle/test gaps to concrete code/test deltas.
- [x] 708. Callback-lifecycle remediation module: make callback-handle drop registration-aware in `src/connection/hooks.rs` so stale handles do not unregister newer same-kind registrations.
- [x] 709. Regression-test module: add concise overlapping-registration/drop-order tests for trace, authorizer, and progress handlers in `tests/integration.rs`.
- [x] 710. Pytest-dependency verification module: re-scan executable/runtime test paths for `pytest` references and ensure standalone Python runner constraints remain satisfied.
- [x] 711. Validation pass (full matrix): run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 712. Review artifact refresh: update `sqlite-provider-review.md` to close resolved findings and record residual risk status.
- [x] 713. Knowledge/progress closure: append concrete remediation facts to `.codex/knowledge/sqlite-provider-review-2026-02-22.md` and update `WORK.md` progress/review notes.
- [x] 687. New review intake (2026-02-21 current detailed implementation/design review request): re-read `WORK.md` Feature Request/instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 688. Requirement traceability refresh: map design commitments (architecture, SPI boundaries, safety/lifetimes, extension/vtab behavior, and performance goals) to concrete code/test locations in current workspace.
- [x] 689. Full implementation/test deep audit: re-read all runtime/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust integration/unit tests, Python suites, scripts, `Makefile`) and collect concrete discrepancy candidates with line-level evidence.
- [x] 690. Standards and production-readiness assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, and backward-compatibility risks.
- [x] 691. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
- [x] 692. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering (severity ranked with file/line references), design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 693. Knowledge capture: append concrete 2026-02-21 review facts (scope, file locations, behavior observations, validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- [x] 694. Progress/review bookkeeping: update `WORK.md` progress statuses and append a dated `Review Notes` entry for this pass.
- [x] 695. Post-completion engineering sweep: compare final findings against current workspace state and record any additional production-quality follow-up tasks (or explicitly confirm none).

- [x] 714. New review intake (2026-02-22 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` fully before auditing.
- [x] 715. Full implementation/test deep-read + design traceability refresh: inspect all runtime/ABI/adapter/test/orchestration files and map design commitments to concrete code paths.
- [x] 716. Validation evidence refresh: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 717. Targeted ABI parity probes: run focused ctypes probes for out-parameter behavior on failure paths (`sqlite3_open_v2`, `sqlite3_blob_open`, `sqlite3_serialize`) to confirm/deny C-ABI compatibility risk.
- [x] 718. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings-first ordering, design-goal assessment, discrepancy summary, and production-readiness verdict.
- [x] 719. Knowledge capture: append concrete 2026-02-22 review-pass facts and probe outcomes to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
- [x] 720. Progress/review bookkeeping: mark tasks `714-719` complete in `WORK.md` and append a dated `Review Notes` summary for this pass.
- [x] 721. Review-fix intake (current request): map active findings in `sqlite-provider-review.md` to concrete code/test changes and verify current runtime paths have no pytest dependency.
- [x] 722. ABI out-parameter sanitation remediation: update `sqlite-provider-abi/src/exports.rs` so `sqlite3_open_v2`, `sqlite3_blob_open`, and `sqlite3_serialize` clear output pointers/lengths before failure-prone branches.
- [x] 723. Regression coverage module: add focused tests for `sqlite3_blob_open`/`sqlite3_serialize` failure-path output clearing and add a no-default-backend regression for `sqlite3_open_v2` bootstrap-failure output clearing.
- [x] 724. Feature-gating cleanup module: gate default-backend-only e2e tests so no-default-features targeted regressions can run deterministically.
- [x] 725. Pytest-elimination closure module: verify executable/runtime test entrypoints have no pytest dependency and keep standalone Python runner flow.
- [x] 726. Validation pass: run `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-abi --no-default-features --test no_default_features_out_params`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py`.
- [x] 727. Artifact/knowledge/progress refresh: update `sqlite-provider-review.md`, append concrete facts to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`, and mark task completion in `WORK.md` Review Notes.
- [x] 728. New review intake (2026-02-22 current detailed implementation/design review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 729. Full implementation/test deep-read + traceability refresh: inspect all runtime/ABI/adapter/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`, `sqlite3.h`) and map design commitments to concrete code paths.
- [x] 730. Standards/discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, panic/FFI safety boundaries, and backward-compatibility impacts; identify concrete findings with severity/file evidence.
- [x] 731. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
- [x] 732. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), then assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 733. Knowledge capture: append concrete 2026-02-22 review-pass facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
- [x] 734. Progress/review bookkeeping + engineering sweep: update `WORK.md` progress statuses, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 735. Review-fix follow-up intake (current request): re-read `sqlite-provider-review.md` residual-risk notes and map them to concrete regression additions in ABI Rust e2e and Python black-box suites.
- [x] 736. Parser parity hardening module: add generated suffix-matrix regression parity checks for `sqlite3_complete` against system `libsqlite3`.
- [x] 737. Optional ABI failure-contract hardening (Rust e2e): add focused regressions that verify non-OK error returns and out-parameter sanitization/misuse contracts for backup/blob/serialize families.
- [x] 738. Optional ABI failure-contract hardening (Python black-box): add ctypes-level failure-path regression coverage for blob/serialize output sanitization and misuse-return semantics.
- [x] 739. Test-stability remediation discovered during validation: eliminate shared dummy-vtab state race and poison propagation in `tests/integration.rs` (remove global resets from `open_conn`, make `DummyStateGuard` poison-tolerant).
- [x] 740. Full validation matrix: run `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`, and no-default-features ABI out-param regression target.
- [x] 741. Artifact refresh: update `sqlite-provider-review.md` and append concrete facts/coverage deltas + validation outcomes to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
- [x] 742. Progress/engineering sweep closure: append a dated `Review Notes` entry for this pass and record whether additional production-quality follow-up work remains.
- [x] 743. New review intake (2026-02-22 current detailed design-doc implementation review request): re-read `WORK.md` instructions, existing `.codex/knowledge` entries, and `sqlite-provider.md` completely before auditing.
- [x] 744. Full implementation/test deep-read + traceability refresh: inspect all runtime/ABI/adapter/test/orchestration files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-abi/tests/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, `tests/**`, `scripts/**`, `Makefile`, `sqlite3.h`) and map design commitments to concrete code paths.
- [x] 745. Standards/discrepancy assessment: evaluate simplicity/module boundaries, public API rustdoc coverage, critical-path test sufficiency, hot-path allocation/copy behavior, panic/FFI safety boundaries, and backward-compatibility impacts; identify concrete findings with severity/file evidence.
- [x] 746. Validation evidence refresh: run verification commands (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`) and capture exact outcomes/blockers.
- [x] 747. Review artifact delivery: rewrite `sqlite-provider-review.md` with findings first (severity ordered, file/line referenced), then assumptions/open questions, design-goal conformance assessment, discrepancy summary, and production-readiness verdict.
- [x] 748. Knowledge capture: append concrete 2026-02-22 review-pass facts (scope, file locations, behavior observations, and validation outputs) to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
- [x] 749. Progress/review bookkeeping: update `WORK.md` progress statuses, append a dated `Review Notes` entry for this pass, and record any additional production-quality follow-up tasks (or explicitly confirm none).
- [x] 750. Post-completion engineering sweep: compare current workspace diffs and review outcomes against design traceability, then record any additional production-quality improvements discovered.
## Review Notes
- 2026-02-22 current detailed implementation/design review delivery (current request continuation): completed the remaining deep-read scope (`tests/integration.rs` tail, Python black-box/scenario suites, scripts, and build manifests), rewrote `sqlite-provider-review.md` in findings-first form with no active defects, and refreshed `.codex/knowledge/sqlite-provider-review-2026-02-22.md` with concrete line-level facts and parity-probe evidence. Full validation matrix passed in this pass: `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox` (18/18), `make test-sqlite-provider-py` (4/4), and `cargo test -p sqlite-provider-abi --no-default-features --test no_default_features_out_params` (1/1). Post-completion engineering sweep found no additional production-quality follow-up tasks.
- 2026-02-22 fix-all follow-up completion (current request): treated residual risks in `sqlite-provider-review.md` as actionable gaps and expanded regression coverage by adding `complete_matches_system_sqlite3_for_generated_suffix_matrix` + `optional_api_failure_paths_return_non_ok_and_keep_out_params_sanitized` in `sqlite-provider-abi/tests/libsqlite3_end_to_end.rs` and `test_optional_api_failure_paths_sanitize_outputs` in `tests/abi_blackbox/test_sqlite_abi.py`. While rerunning full validation, `cargo test` exposed a real integration-test race/poison issue in dummy-vtab shared state; fixed in `tests/integration.rs` by making `DummyStateGuard` recover from poisoned mutexes and by removing global dummy-state resets from `open_conn` (which previously raced with panic-site assertions). Revalidated with `cargo test`, `cargo test --test integration` plus a 20-iteration loop, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc for all three crates, `make test-abi-blackbox` (18/18), `make test-sqlite-provider-py` (4/4), and `cargo test -p sqlite-provider-abi --no-default-features --test no_default_features_out_params` (1/1); all passing. Updated review/knowledge artifacts accordingly and no additional active defects remain.
- 2026-02-22 current detailed implementation/design review delivery (this request): re-read `WORK.md` instructions, `.codex/knowledge` entries, and `sqlite-provider.md`, then re-audited core/ABI/adapter/test/orchestration code paths with line-level checks and refreshed `sqlite-provider-review.md` in findings-first format (no active defects). Validation matrix passed: `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc for all three crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`; targeted config check `cargo test -p sqlite-provider-abi --no-default-features --test no_default_features_out_params` also passed (1/1). Appended concrete evidence to `.codex/knowledge/sqlite-provider-review-2026-02-22.md` and completed tasks `728-734`; no additional production-quality follow-up tasks were identified beyond existing residual-risk notes.
- 2026-02-22 fix-all completion (current request): closed all active findings from `sqlite-provider-review.md` by sanitizing ABI out-parameters before failure paths in `sqlite-provider-abi/src/exports.rs` (`sqlite3_open_v2`, `sqlite3_blob_open`, `sqlite3_serialize`) and by clearing serialize outputs on serialized-map lock failure. Added regressions in `sqlite-provider-abi/src/tests.rs` (`blob_open_clears_blob_out_on_error`, `serialize_clears_outputs_on_error`) plus a no-default-backend bootstrap failure contract test in `sqlite-provider-abi/tests/no_default_features_out_params.rs`. Gated default-backend-only e2e test file with `#![cfg(feature = "default-backend")]` so no-default-features targeted ABI regressions run cleanly. Confirmed pytest dependency remains eliminated from runtime/executable paths and validated with `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-abi --no-default-features --test no_default_features_out_params`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py` (all passing).
- 2026-02-22 current detailed implementation/design review delivery (this request): completed a fresh full deep-read of `sqlite-provider.md`, all core/ABI/adapter implementation files, and Rust/Python/black-box test suites; reran full validation matrix (all passing) and executed focused ctypes probes that reproduced ABI out-parameter sanitation gaps. Confirmed active findings: (1) `sqlite3_open_v2` returns before clearing `*db_out` on bootstrap/provider-failure paths (`sqlite-provider-abi/src/exports.rs:82-93`), (2) `sqlite3_blob_open` leaves `*blob_out` unchanged on failure (`sqlite-provider-abi/src/exports.rs:2135-2167`), and (3) `sqlite3_serialize` failure paths leave `*out`/`*out_bytes` unchanged (`sqlite-provider-abi/src/exports.rs:2061-2088`). Targeted probe outputs: `open_v2` with `--no-default-features` returned `rc=21` with sentinel `db_out=0x1234`; `blob_open` error path returned non-OK with sentinel `blob_out` unchanged; `serialize(NULL,...)` returned `rc=21` with unchanged sentinel outputs. Updated `sqlite-provider-review.md`, appended concrete facts to `.codex/knowledge/sqlite-provider-review-2026-02-22.md`, and marked tasks `714-720` complete in `WORK.md`.
- 2026-02-22 fix-all remediation completion (current request): resolved all active findings in `sqlite-provider-review.md` by making callback-handle teardown registration-aware in `src/connection/hooks.rs` (active-context registry keyed by `(db, kind)`, stale-handle drop no longer unregisters newer callbacks, raw/clear progress paths invalidate safe tracking) and by adding overlap/drop-order regressions for progress/trace/authorizer in `tests/integration.rs` (`*_drop_of_stale_handle_keeps_newer_registration`). Verified pytest-dependency elimination in runtime/executable paths via `rg -n "pytest" scripts tests/sqlite_provider_py tests/abi_blackbox Makefile` (no matches) and `cargo test --test python_runner` (2/2 pass). Full matrix passed: `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox` (17/17), and `make test-sqlite-provider-py` (4/4). Refreshed `sqlite-provider-review.md` to no-active-findings and appended detailed facts in `.codex/knowledge/sqlite-provider-review-2026-02-22.md`.
- 2026-02-22 clippy warning fix pass (current request): resolved the reported warning set by adding `# Safety` rustdoc sections to unsafe adapter ABI helpers in `sqlite-provider-sqlite3/src/lib.rs`, removing redundant same-type pointer casts in `sqlite-provider-sqlite3/src/lib.rs`, `sqlite-provider-sqlite3/src/extensions_impl.rs`, and `sqlite-provider-abi/src/lib.rs`, and revalidating with `cargo clippy -p sqlite-provider-sqlite3 --lib` plus `cargo clippy -p sqlite-provider-abi --lib` (both clean).
- 2026-02-22 current detailed implementation/design review delivery (this request): re-read `sqlite-provider.md`, all core/ABI/adapter implementation modules, and all Rust/Python/black-box test/orchestration files, then reran the full validation matrix (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`; all passing). Refreshed `sqlite-provider-review.md` and recorded facts in `.codex/knowledge/sqlite-provider-review-2026-02-22.md`; active findings are (1) medium callback-handle drop semantics can unregister newer trace/authorizer/progress registrations and (2) low missing regression coverage for that overlapping-handle lifecycle case. No additional production-quality follow-ups were identified beyond those two items.
- 2026-02-22 current detailed implementation/design review delivery (this request): re-read `sqlite-provider.md`, existing `.codex/knowledge` context, and all runtime/ABI/adapter/test/orchestration files (including full `tests/integration.rs`), reran full validation (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`), and refreshed `sqlite-provider-review.md` with findings-first ordering and no active findings. Verified current implementation remains aligned with design goals (simplicity/module boundaries/lifetime safety/panic containment/hot-path behavior), with residual risk limited to finite parser parity corpus and smoke-level optional API coverage.
- 2026-02-21 fix-all remediation completion (current request): resolved all active findings from `sqlite-provider-review.md` by aligning ABI/header compatibility to canonical SQLite signatures (`sqlite3_create_function_v2` / `sqlite3_create_window_function` destroy callbacks now `void(*)(void*)`, `sqlite3_free_table` now canonical `char**`) across `sqlite3.h` and `sqlite-provider-abi/src/exports.rs`. Preserved repeated-free hardening under canonical ABI via shim-side table-allocation tracking in `sqlite-provider-abi/src/state.rs` + `sqlite-provider-abi/src/exports.rs`. Updated regression coverage for canonical callback semantics and free-table call form in `sqlite-provider-abi/tests/{libsqlite3_end_to_end.rs,mock_exec.rs}`. Added real-backend optional-family smoke coverage in Rust e2e (`backup`, `blob`, `serialize/deserialize`, `WAL checkpoint`, `table metadata`) and Python black-box ctypes suite (`tests/abi_blackbox/test_sqlite_abi.py`). Verified pytest elimination for runtime paths (`scripts`, `tests/sqlite_provider_py`, `tests/abi_blackbox`, `Makefile`) and reran full validation: `cargo fmt --all`, `cargo test` (initial flake in parallel integration run; rerun plus serialized integration pass confirmed stability), `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all three crates, `make test-abi-blackbox` (17/17), and `make test-sqlite-provider-py` (4/4). No additional production-quality follow-up items were identified.
- 2026-02-21 current detailed implementation/design review delivery (this request): re-read `sqlite-provider.md`, all core/ABI/adapter/runtime-test/orchestration files, and refreshed `sqlite-provider-review.md` with two active findings: (1) medium API-compatibility drift from canonical SQLite signatures (`sqlite3_create_function_v2`/`sqlite3_create_window_function` destroy callback shape and `sqlite3_free_table` pointer depth in `sqlite3.h` + `sqlite-provider-abi/src/exports.rs`), and (2) low real-backend coverage gap for optional ABI families (`backup/blob/serialize/WAL/table_metadata`) where current e2e/black-box suites only exercise a subset (`busy_timeout`). Validation evidence now passes fully: `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py` (with one transient earlier `No space left on device` failure on the first `cargo test` run resolved by rerun). Post-completion engineering sweep identified no additional production-quality follow-up tasks beyond the two documented findings.
- 2026-02-21 current detailed implementation/design review delivery (this request): re-read `sqlite-provider.md`, existing `.codex/knowledge` context, and all remaining pending runtime-test files (`tests/sqlite_provider_py/conftest.py`, `tests/sqlite_provider_py/test_concurrency_busy.py`, `tests/sqlite_provider_py/test_json1_hybrid.py`, `tests/sqlite_provider_py/test_transaction_atomicity.py`, `tests/sqlite_provider_py/test_window_cte_integrity.py`), then re-verified high-risk ABI destructor paths in `sqlite-provider-abi/src/{lib.rs,exports.rs}`. Executed direct parity probes against system `/lib/aarch64-linux-gnu/libsqlite3.so.0`; observed no null-pointer destructor-call mismatch for `sqlite3_bind_text/blob` and `sqlite3_result_text/blob` (all probe call counters remained `0`). Full validation passed: `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`. Refreshed `sqlite-provider-review.md` with no active findings; no additional production-quality follow-up items identified in this pass.
- 2026-02-21 fix-all remediation completion (current request): resolved all active findings from `sqlite-provider-review.md` by (1) making `sqlite3_free_table` idempotent and clearing caller-owned table pointers after free (`sqlite-provider-abi/src/exports.rs`), (2) hardening trigger parsing/completion to require the `END;` terminator boundary and reject malformed `END SELECT ...` forms (`sqlite-provider-abi/src/parser.rs`), and (3) enforcing registration failure-path ownership cleanup in sqlite3 adapter pre-validation paths (`sqlite-provider-sqlite3/src/core_impl.rs`, including unavailable-window and interior-NUL paths). Added focused regressions in ABI unit/mock/e2e suites and adapter unit tests (`sqlite-provider-abi/src/tests.rs`, `sqlite-provider-abi/tests/mock_exec.rs`, `sqlite-provider-abi/tests/libsqlite3_end_to_end.rs`, `sqlite-provider-sqlite3/src/core_impl.rs`). Verified pytest dependency elimination in executable/runtime paths via repo scan (`scripts`, `tests`, `Makefile`, crate sources) with zero matches. Full validation passed: `cargo fmt --all`, `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py`. No additional production-quality follow-up items identified in this pass.
- 2026-02-21 current detailed implementation/design review delivery (this request): re-read `sqlite-provider.md`, existing `.codex/knowledge` review context, and core/ABI/adapter/runtime test code paths; verified three active issues with concrete repro evidence: (1) `sqlite3_complete` parser parity bug for malformed trigger scripts (`sqlite-provider-abi/src/parser.rs:210`, `sqlite-provider-abi/src/exports.rs:2381`) where shim returns `1` while system sqlite returns `0`; (2) `sqlite3_free_table` repeat-free double-free crash risk because `*paz_result` is not nulled after free (`sqlite-provider-abi/src/exports.rs:1588`), reproduced via isolated Python subprocess abort (`free(): double free detected in tcache 2`, return code `-6`); (3) provider ownership-contract mismatch risk for UDF/window registration failure when adapter rejects interior-NUL names before invoking `drop_user_data` (`src/function.rs:513`, `src/provider.rs:481`, `sqlite-provider-sqlite3/src/core_impl.rs:252`, `sqlite-provider-sqlite3/src/core_impl.rs:294`). Updated `sqlite-provider-review.md` with findings-first severity ordering and appended detailed evidence in `.codex/knowledge/sqlite-provider-review-2026-02-21.md`. No additional production-quality follow-up items beyond these active findings were identified in this pass.
- 2026-02-21 fix-all remediation completion (current request): closed all issues from `sqlite-provider-review.md` by adding explicit SPI ownership/teardown contracts for UDF/window registration in `src/provider.rs`, adding deterministic failing-registration cleanup coverage in `tests/integration.rs` (`scalar_function_registration_error_drops_callback_state`, `window_function_registration_error_drops_callback_state`) with mock failure injection paths, and removing the last runtime-path pytest reference string from `scripts/run_sqlite_provider_py.py`. Revalidated with `cargo fmt --all`, `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks for all crates, `make test-abi-blackbox`, and `make test-sqlite-provider-py` (all passing). No additional follow-up issues identified.
- 2026-02-21 detailed implementation review delivery (current request): re-read `sqlite-provider.md`, existing `.codex/knowledge` context, and all runtime/test/orchestration files (including previously pending `sqlite-provider-abi/tests/libsqlite3_end_to_end.rs`, `sqlite-provider-abi/tests/mock_exec.rs`, and Python black-box/scenario suites), reran full validation (`cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`; all passing), and rewrote `sqlite-provider-review.md` with one low-severity finding: SPI ownership-contract ambiguity for UDF `user_data` teardown plus missing failing-provider regression coverage. Added follow-up hardening tasks `640-643` in Agent Work Plan/Progress.
- 2026-02-21 remediation pass (current request): closed all residual issues from `sqlite-provider-review.md` by fully removing pytest dependency from the Python scenario suite (`scripts/run_sqlite_provider_py.py`, `tests/sqlite_provider_py/*.py`, `tests/sqlite_provider_py/conftest.py`) and strengthening SQL parser compatibility coverage with new trigger/CASE regression tests (`sqlite-provider-abi/src/tests.rs`, `sqlite-provider-abi/tests/mock_exec.rs`, `sqlite-provider-abi/tests/libsqlite3_end_to_end.rs`, including direct shim-vs-system `sqlite3_complete` corpus parity). Revalidated with `cargo test`, package tests, `cargo clippy --all-targets --all-features`, strict rustdoc checks, `make test-abi-blackbox`, and `make test-sqlite-provider-py` (all passing).
- 2026-02-21 remediation follow-through: re-verified no remaining executable `pytest` dependency in Python test/runtime harness paths, reran focused scope validation (`make test-sqlite-provider-py`, `cargo test -p sqlite-provider-abi`, both passing), refreshed stale line references in `sqlite-provider-review.md`, and appended concrete remediation evidence to `.codex/knowledge/sqlite-provider-review-2026-02-21.md`.
- 2026-02-21 full implementation review (current request): re-read `sqlite-provider.md` and all runtime/test files (`src/**`, `sqlite-provider-abi/src/*.rs`, `sqlite-provider-sqlite3/src/*.rs`, Rust/Python suites, scripts), reran full validation (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, strict rustdoc for all crates, `make test-abi-blackbox`, `make test-sqlite-provider-py`), and refreshed `sqlite-provider-review.md` with no active findings; implementation remains aligned with design goals and no additional production-quality follow-up tasks were identified.
- Git diff/staging review is unavailable because there is no `.git` directory in the repo root.
- Design adjustments implemented: `Sqlite3Api::user_data` is a static associated function, `Sqlite3Api::declare_vtab` added for vtab schema declaration, and vtab traits are generic over the provider (`VirtualTable<P>`, `VTabCursor<P>`).
- 2026-02-11 manual review: design doc coverage looks complete; added vtab arg buffering, generic `create_module<T>` call site support, window/vtab integration tests, and alignment-safe aggregate storage in mocks.
- 2026-02-11 post-change review: new `sqlite-provider-sqlite3` adapter + ABI exec/get_table tests reviewed; no additional follow-ups identified.
- 2026-02-12 integration-test feasibility review: design is fully implementable. One optional caveat remains by design: if `sqlite-provider-abi` is compiled without `default-backend`, automatic bootstrap returns `SQLITE_MISUSE`; keep default features enabled for production black-box loading flows.
- 2026-02-12 bootstrap hardening: guarded default-backend initialization with `OnceLock` to avoid concurrent duplicate bootstrap work and transient leaked provider-state allocations.
- 2026-02-12 post-completion sweep: compared implementation against `.codex/design/integration-tests.md` and current ABI surface; no additional correctness/performance follow-ups identified beyond completed bootstrap hardening.
- 2026-02-13 delivery pass: verified requested deliverables are present (`sqlite-provider-abi/Cargo.toml`, `sqlite-provider-abi/src/lib.rs`, `scripts/locate_sqlite_abi_lib.sh`, `Makefile`, `tests/abi_blackbox/test_sqlite_abi.py`), refined Python `sqlite3_exec` `err_out` typing to `c_char_p*`, and re-validated via `make test-abi-blackbox` (all tests passing).
- 2026-02-13 SDET design delivery: added `.codex/design/test-suites.md` with four advanced SQLite reliability scenarios (busy retry/WAL contention, JSON1 deep query + partial mutation, window-function oracle validation, rollback atomicity) and recorded concrete facts in `.codex/knowledge/sqlite3-api-test-suite-design.md`.
- 2026-02-13 SDET review/revision delivery: reviewed `.codex/design/test-suites.md` against current runtime/test surfaces, produced revised design `.codex/design/abc_v2.md` with repository-grounded feasibility/performance guidance and CI acceptance criteria, and recorded evidence in `.codex/knowledge/sqlite3-api-test-suite-review.md`; revalidated repo health via `cargo test` and `make test-abi-blackbox` (all passing).
- 2026-02-13 SDET implementation delivery: added `tests/sqlite_provider_py/` scenario suite (`conftest.py`, concurrency, JSON1, window/CTE, rollback atomicity) plus `Makefile` target `test-sqlite-provider-py`; `make test-sqlite-provider-py` currently fails in this environment because `/usr/bin/python3` lacks `pytest`, so scenario logic was validated via direct function execution with a minimal local `pytest` stub, while baseline regressions were rechecked with `make test-abi-blackbox`, focused `cargo test <test_case_name>`, `cargo test`, and `cargo test -p sqlite-provider-abi` (all passing).
- 2026-02-13 shim-enforcement delivery: migrated `tests/sqlite_provider_py` from Python `sqlite3` to ctypes C-ABI wrappers, added `dladdr` origin assertions requiring `sqlite3_open`/`sqlite3_exec` to resolve from `libsqlite_provider_abi.so`, and updated `Makefile` to inject `SQLITE3_SPI_LIB`; validated via direct shim bootstrap check + direct scenario execution harness + ABI/cargo regressions, while `make test-sqlite-provider-py` remains blocked by missing `pytest` module in the environment.
- 2026-02-16 rust-2024 warning cleanup: fixed the requested `unsafe_op_in_unsafe_fn` call sites in `src/connection.rs`, `src/function.rs`, `src/provider.rs`, `src/value.rs`, and `src/vtab.rs` by adding explicit `unsafe { ... }` blocks; `cargo check --lib` is now clean and `cargo test` passes, with remaining warnings isolated to `tests/integration.rs` mock unsafe methods.
- 2026-02-16 clippy warning-set cleanup: resolved reported `src/*` findings (`type_complexity`, `not_unsafe_ptr_arg_deref`, `len_without_is_empty`, `too_many_arguments`, `missing_safety_doc`, `unnecessary_cast`) via targeted patches in `src/connection.rs`, `src/function.rs`, `src/provider.rs`, and `src/vtab.rs`; verified with `cargo clippy --lib` (clean) and `cargo clippy --all-targets --all-features` (remaining warnings are unrelated pre-existing `tests/integration.rs` diagnostics).
- 2026-02-18 Rust 2024 adapter/ABI compatibility pass: fixed `sqlite-provider-sqlite3/src/lib.rs` Linux linker declaration to `unsafe extern "C" {}`, added narrowly scoped `#[allow(unsafe_op_in_unsafe_fn)]` on FFI-heavy impl blocks in that adapter crate, and migrated `sqlite-provider-abi/src/lib.rs` exports from `#[no_mangle]` to `#[unsafe(no_mangle)]`; `cargo test -p sqlite-provider-abi` now passes (warnings remain for `unsafe_op_in_unsafe_fn` in ABI/test code).
- 2026-02-18 clippy cast-warning follow-up: verified the five reported `sqlite-provider-sqlite3/src/lib.rs` redundant pointer casts are already removed (`bind_blob`, `column_text`, `result_blob`, `value_text`, `raw_bytes_from_cstr`), revalidated with `cargo clippy -p sqlite-provider-sqlite3 --lib` (clean), and confirmed `cargo test -p sqlite-provider-abi` still passes with only unrelated Rust 2024 warnings in `sqlite-provider-abi/tests/mock_exec.rs`.
- 2026-02-18 ABI warning/error remediation pass: added crate-level FFI lint policy in `sqlite-provider-abi/src/lib.rs` (`unsafe_op_in_unsafe_fn`, `clippy::not_unsafe_ptr_arg_deref`, `clippy::missing_safety_doc`, `clippy::too_many_arguments`), fixed concrete cast/style diagnostics in ABI and adapter sources, and silenced Rust 2024 unsafe-op noise in `sqlite-provider-abi/tests/mock_exec.rs`; validation is clean with `cargo clippy -p sqlite-provider-abi --all-targets --all-features`, `cargo clippy -p sqlite-provider-sqlite3 --all-targets --all-features`, and `cargo test` in `sqlite-provider-abi`.
- 2026-02-18 implementation review delivery: completed a full design-vs-code audit and wrote `sqlite-provider-review.md` plus `.codex/knowledge/sqlite-provider-review-2026-02-18.md`; key findings include missing panic containment in virtual-table callbacks, unchecked UTF-8 conversion safety risks, ABI flag-mapping mismatches (`sqlite3_open_v2` and function-flag encoding), callback-state leak paths on failed hook registration, and one environment blocker (`make test-sqlite-provider-py` fails due missing `pytest`).
- 2026-02-19 review remediation delivery: fixed all review-identified code defects by adding FFI panic containment in virtual-table and aggregate/window init paths, replacing unchecked text decode with validated/fallback decode, correcting ABI flag translations for `sqlite3_open_v2` and function registration, reclaiming callback state on failed hook registration, and caching virtual-table module descriptors to avoid per-call leaks; added targeted regression tests in `tests/integration.rs` and `sqlite-provider-abi/src/lib.rs`, then validated with `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features` (all passing). Also resolved the Python-suite environment blocker by adding `scripts/run_sqlite_provider_py.py` and switching `Makefile` target `test-sqlite-provider-py` to use it, so `make test-sqlite-provider-py` now passes without an installed `pytest`.
- 2026-02-19 follow-up implementation review delivery: re-audited `sqlite-provider.md` against current code/tests and refreshed `sqlite-provider-review.md` plus `.codex/knowledge/sqlite-provider-review-2026-02-19.md`; all validation targets pass (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, `make test-sqlite-provider-py`), and remaining findings are concentrated in extension-handle lifetime safety (`CallbackHandle`/`Backup`/`Blob` not tied to `Connection`), callback-state drop behavior on unregister failure, and C-ABI destructor-ownership semantics for `sqlite3_bind_*`/`sqlite3_result_*`.
- 2026-02-19 follow-up remediation completion: tied `CallbackHandle`/`Backup`/`Blob` to connection borrows via `PhantomData`, changed callback-handle drop to leak state on unregister failure (avoids callback UAF), implemented destructor-contract handling for `sqlite3_bind_text/blob` and `sqlite3_result_text/blob`, aligned `RawBytes` and row snapshot docs with safe API behavior, expanded ABI destructor tests (including success paths), and revalidated with `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py` (all passing).
- 2026-02-19 latest review pass: completed a fresh full audit against `sqlite-provider.md` and current code/tests, refreshed `sqlite-provider-review.md`, and re-ran all validation targets (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, `make test-sqlite-provider-py`; all passing). New top findings are authorizer semantic correctness gaps: `AuthorizerResult` return-code mapping is inverted (`Ignore`/`Deny`) and panic in `authorizer_trampoline` currently fails open (`SQLITE_OK`), plus missing tests that exercise callback return-code/panic behavior.
- 2026-02-19 review-fix completion: resolved all issues from `sqlite-provider-review.md` by correcting authorizer return-code mapping (`Ignore=2`, `Deny=1`) in `src/connection.rs`, making authorizer panic/null-context paths fail closed, adding direct authorizer behavior tests in `tests/integration.rs`, and reconciling `sqlite-provider.md` API/lifetime wording with current implementation (`OpenOptions`, `RawBytes`, row borrow semantics). Revalidated with `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py` (all passing).
- 2026-02-19 current review pass: completed a fresh full audit against `sqlite-provider.md` and current workspace code/tests; updated `sqlite-provider-review.md` with three residual findings (adapter loader singleton/leak behavior, missing vtab `out_err` propagation, and incomplete `Value`/`ValueRef` rustdoc coverage), recorded evidence in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and revalidated with `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `make test-abi-blackbox`, and `make test-sqlite-provider-py` (all passing).
- 2026-02-19 remediation follow-up (current request): fixed all residual findings by caching `LibSqlite3::load()` via process-wide `OnceLock<Option<&'static LibSqlite3>>`, propagating virtual-table `xCreate/xConnect` errors through `out_err` with allocated C strings, adding missing `Value`/`ValueRef` accessor rustdoc, and adding regression coverage for singleton stability + `out_err` propagation (`sqlite-provider-sqlite3/src/lib.rs`, `src/vtab.rs`, `src/value.rs`, `tests/integration.rs`). Validation commands were attempted but blocked in this environment because linker/toolchain runtime libs are unavailable (`cc` missing; `rust-lld` missing `-lc/-ldl/-lpthread`).
- 2026-02-19 revalidation after toolchain fix: with `cc` installed, reran validation successfully for `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features`. `make` is not installed in this environment, so the two make targets were executed via their exact underlying commands (`cargo build -p sqlite-provider-abi`, `python3 tests/abi_blackbox/test_sqlite_abi.py -v`, and `python3 scripts/run_sqlite_provider_py.py tests/sqlite_provider_py`) and both passed.
- 2026-02-19 deep re-audit review delivery: re-read `sqlite-provider.md`, all implementation modules, and all Rust/Python test suites; refreshed `sqlite-provider-review.md` with five findings (high: virtual-table `out_err` allocator contract risk in `src/vtab.rs`; medium: `sqlite3_open_v2` out-param not initialized on failure in `sqlite-provider-abi/src/lib.rs`; medium: nondeterministic `tests/integration.rs` vtab panic test due shared global state; low: `sqlite3_exec` column-name dependency on optional metadata; low: hard-coded `sqlite3_threadsafe` return). Validation runs: `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features` passed; workspace `cargo test` is flaky due the vtab test race (reproduced in loop, passes with `--test-threads=1`); make unavailable so equivalent black-box/Python commands were run and passed.
- 2026-02-19 current remediation completion: fixed all five findings from the deep re-audit by (1) adding provider allocator hooks (`malloc`/`free`) and switching vtab `out_err` allocation to provider-owned memory in `src/vtab.rs`, with test free-path updates in `tests/integration.rs`; (2) nulling `*db_out` at the top of `sqlite3_open_v2` and adding `open_v2_clears_db_out_on_error`; (3) serializing shared-state vtab panic/connect tests via `DummyStateGuard` + `DUMMY_STATE_LOCK`; (4) adding deterministic fallback column names (`columnN`) for `sqlite3_exec` and `sqlite3_get_table` when metadata is absent; and (5) plumbing provider-derived `sqlite3_threadsafe` through SPI/ABI (`Sqlite3Api::threadsafe`, `AbiCore::threadsafe`, `LibSqlite3` symbol wiring). Validation passes: `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, plus make-target-equivalent commands (`cargo build -p sqlite-provider-abi`, ABI black-box python test, and sqlite-provider python suite) all succeeded.
- 2026-02-19 design-doc conformance review delivery: re-read `sqlite-provider.md` and all implementation/test files in the workspace, refreshed `sqlite-provider-review.md` with three findings (high: aggregate/window state alignment precondition is undocumented in safe API and can violate safety; low: missing rustdoc on public `Error` constructors; low: `connection` module responsibility sprawl), recorded concrete evidence in `.codex/knowledge/sqlite-provider-review-2026-02-19.md`, and revalidated with `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features` (all pass). `make` is unavailable in this environment, so exact Makefile recipe-equivalent commands were run directly (`cargo build -p sqlite-provider-abi`, ABI black-box Python suite, and `scripts/run_sqlite_provider_py.py`), all passing.
- 2026-02-19 safety follow-up remediation completion: fixed all active findings from `sqlite-provider-review.md` by storing aggregate/window state out-of-line behind a pointer slot in `src/function.rs` (removing provider-alignment dependency for arbitrary `T`), adding over-aligned aggregate/window regression tests in `tests/integration.rs`, adding rustdoc for all public `Error` constructors in `src/error.rs`, and splitting `connection` into `src/connection/core.rs`, `src/connection/hooks.rs`, and `src/connection/extensions.rs` with stable re-exports from `src/connection/mod.rs`. Validation passes: `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent commands (`cargo build -p sqlite-provider-abi`, `python3 tests/abi_blackbox/test_sqlite_abi.py -v`, `python3 scripts/run_sqlite_provider_py.py tests/sqlite_provider_py`) all succeeded.
- 2026-02-19 remediation verification (latest request): re-checked all findings listed in `sqlite-provider-review.md` and confirmed they remain fixed in current sources (`src/function.rs` pointer-slot + boxed aggregate/window state, documented `Error` constructors in `src/error.rs`, and split `connection` modules under `src/connection/`). Revalidated with `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, plus make-target-equivalent commands (`cargo build -p sqlite-provider-abi`, `SQLITE3_SPI_LIB="$(./scripts/locate_sqlite_abi_lib.sh debug)" python3 tests/abi_blackbox/test_sqlite_abi.py -v`, `SQLITE3_SPI_LIB="$(./scripts/locate_sqlite_abi_lib.sh debug)" python3 scripts/run_sqlite_provider_py.py tests/sqlite_provider_py`); all passed.
- 2026-02-19 review-fix confirmation pass (current request): re-read `sqlite-provider-review.md`, verified all listed findings remain fixed (`src/function.rs` aggregate/window pointer-slot state handling, `src/error.rs` constructor rustdoc, and split `src/connection/` module boundaries), reran full validation (`cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, and make-target-equivalent ABI/Python commands), and rewrote `sqlite-provider-review.md` to remove stale open-findings sections and present current “no active findings” status with concrete evidence.
- 2026-02-19 current detailed review delivery: re-read `sqlite-provider.md`, all core/ABI/adapter modules, and all Rust/Python suites; identified one active high-severity ABI semantics mismatch where `sqlite3_bind_blob(NULL, ..)` and `sqlite3_result_blob(NULL, ..)` are not treated as SQL `NULL` (shim yields empty blob or misuse), confirmed via targeted ctypes probes against both shim and system `libsqlite3`; also recorded low-severity design/doc deltas (design doc still references a `safe` module name and does not document the implementation's invalid-UTF8 text-to-blob fallback). Validation passed for `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, `cargo build -p sqlite-provider-abi`, ABI black-box Python tests, and `scripts/run_sqlite_provider_py.py` fallback suite.
- 2026-02-19 review artifact finalization pass: confirmed the ABI blob-NULL mismatch still reproduces (`system libsqlite3` returns type `5`/NULL while shim returns type `4`/BLOB for both `bind_blob(NULL,0)` and `result_blob(NULL,0)`), rewrote `sqlite-provider-review.md` into a severity-ordered design-conformance review, and refreshed bookkeeping in `.codex/knowledge/sqlite-provider-review-2026-02-19.md` and `WORK.md`.
- 2026-02-19 fix-all follow-up (current request): remediated all active findings from `sqlite-provider-review.md` by making ABI blob-null paths SQLite-compatible (`sqlite3_bind_blob`/`sqlite3_result_blob` now map null pointer to SQL NULL), adding focused ABI regressions for both bind and result semantics, and reconciling `sqlite-provider.md` module wording plus invalid-UTF8 text fallback documentation. Validation passed across `cargo fmt --all`, `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, `cargo clippy --all-targets --all-features`, plus make-target-equivalent commands (`cargo build -p sqlite-provider-abi`, ABI black-box python suite, and `scripts/run_sqlite_provider_py.py` suite). Direct ctypes parity probe now matches system behavior: both system and shim return `(5, 5)` for bind/result blob-null type checks.
- 2026-02-19 detailed review delivery (current request): re-read `sqlite-provider.md` and all runtime/test modules, rewrote `sqlite-provider-review.md` with one active high-severity finding (`sqlite3_get_table` multi-statement behavior mismatch in `sqlite-provider-abi/src/lib.rs`) plus one low rustdoc-coverage gap (`src/value.rs`, `src/connection/hooks.rs`), and updated `.codex/knowledge/sqlite-provider-review-2026-02-19.md` with concrete evidence. Validation passed for `cargo test`, `cargo test -p sqlite-provider-abi`, `cargo test -p sqlite-provider-sqlite3`, and `cargo clippy --all-targets --all-features`; `make` is unavailable in this environment, so exact recipe-equivalent commands were executed directly (`cargo build -p sqlite-provider-abi`, ABI black-box Python suite, and `scripts/run_sqlite_provider_py.py`), all passing.
- 2026-02-19 latest review-fix remediation completion: resolved all active findings from `sqlite-provider-review.md` by reworking `sqlite3_get_table` in `sqlite-provider-abi/src/lib.rs` to execute all statements and aggregate rows with SQLite-compatible behavior, adding ABI end-to-end regressions for setup+select and multi-select scripts (`sqlite-provider-abi/tests/libsqlite3_end_to_end.rs`), and filling rustdoc gaps for `ValueRef::to_owned` plus authorizer code-conversion helpers (`src/value.rs`, `src/connection/hooks.rs`). Validation passed for `cargo fmt --all -- --check`, `cargo test -p sqlite-provider-ab