# Changelog
All notable changes to `libfse` will be documented here.
Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
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## [0.1.1] — 2026-05-27
### Changed
- **Patent notice**: Updated all headers to clearly state pending US patent status and commercial licensing requirements.
- **README**: Complete rewrite — added design rationale, code examples, API reference, performance methodology, security properties, and use case documentation.
- **Copyright**: Updated from "AI State Pilot" to "Michael Kuykendall / DZERO".
### Added
- `examples/policy_scan.rs` — canonical quickstart demonstrating all three opcodes, ScanCursor pattern, and fail-closed semantics.
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## [0.1.0] — 2026-05-26
### Added
- Initial public release.
- `FseMap::compile(rules)` — compile a rule set into a fused DFA + action table.
- `FseMap::new_cursor()` — borrowless persistent DFA walker state.
- `FseMap::scan_with_cursor(cursor, input)` — single-pass fail-closed scan.
- Three opcodes: `Reject`, `Record`, `Ignore`.
- `FseOpcode::Control(ControlOp)` for mode switching and rule state reset.
- DoS protection: `RuleId` hard-capped at 65535 (max ~8KB per cursor).
- Zero-allocation hot path — verified by `test_zero_alloc_in_hot_loop`.
- Benchmarks: ~27% lower latency than `aho-corasick` iterator on 7KB payload.
- `ScanSummary` returned on success: `match_states_seen`, `pattern_hits`, `rules_recorded`.
- `Violation::PolicyReject` and `Violation::IntegrityError` — fail-closed error taxonomy.
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[0.1.1]: https://github.com/Michael-A-Kuykendall/airframe/compare/libfse-v0.1.0...libfse-v0.1.1
[0.1.0]: https://github.com/Michael-A-Kuykendall/airframe/releases/tag/libfse-v0.1.0