---
type: topic-doc
area: developer-experience
visibility: public
last_memory_sync: 2026-06-14T22:09:16.647708+00:00
---
# Developer Experience
## Current model
- COE-452 contributed: PR #122: COE-452: Add DuckDB prebuilt developer build mode (merge `6ce8edd`)
- COE-453 contributed: PR #123: M9.5: Add non-interactive init automation (merge `3200ed6`)
- COE-479 contributed: PR #138: Resume Codex debug sessions (merge `0841adb`)
- COE-480 contributed: PR #140: Show truthful run detail metrics (merge `ec2dc04`)
- COE-481 contributed: PR #139: Refresh OpenAI model profile defaults (merge `0f2a74f`)
- COE-482 contributed: PR #143: Fix Codex token usage accounting in TUI (merge `d48ad13`)
## Important invariants
- Preserve the behavior described in the recent captured changes unless current code and tests show it has changed.
- Use capsule source refs to inspect the original PR or Linear issue when context is ambiguous.
## Operational flow
- No generated diagram requested for this sync.
## Known gotchas
- No area-specific gotchas were inferred from the selected memory.
## Recent changes
- COE-452: DuckDB Prebuilt Developer Build Mode
- COE-453: Non-Interactive Init For Automation
- COE-479: Codex Debug Session Resume
- COE-480: Run Detail Metrics And Density
- COE-481: Model Configuration Codex Subscription Follow-Up
- COE-482: TUI Codex Token Usage Accounting
- COE-483: Codex Event Content Summaries
- COE-484: Desktop Live Snapshot And Run Detail Refresh
## Source refs
- COE-452
- COE-453
- COE-479
- COE-480
- COE-481
- COE-482
- COE-483
- COE-484