# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased] — v0.1.0 (alpha)

The stdlib-only core, built test-first (TDD) per `docs/PLAN.md`.

### Added

- `report` — shared `Finding` / `Report` / `Severity` / `Source` types.
- `sanitize` — carrier stripping (zero-width, BIDI, Unicode-tag, HTML comment,
  `data:`); byte-identical on clean input.
- `entropy` — Shannon / base64-like / hex-blob detection; base64 decode-and-rescan.
- `lexicon` — JSON pattern data + loader; raw/normalized/homoglyph/rot13 variants;
  ReDoS-bounded, size-capped.
- `fence` — randomized per-call spotlight delimiter; attacker marker-strip.
- `neutralize` — opt-in defang of active-content output (byte-identical when clean).
- `output` — compose lexicon + entropy + decode-rescan over emitted text; secret
  egress patterns (OWASP LLM02); report-only, never mutates.
- `disposition` — WARN | QUARANTINE_REVIEW | FAIL_SECURE under a source-trust
  policy; compound-signal escalation; fail-**closed** when the scanner errors.
- `contract` — write-time asserters that raise: `assert_tool_less`,
  `assert_credential_allowlist`, `scoped_env`.
- `grounding` — the `SourceGroundingCheck` seam for semantic poisoning (interface
  only; `[judge]` implementation plugs in behind an extra).
- Top-level wiring — the `prepare_input` / `screen_output` §6 bookends plus the
  full public surface; end-to-end showcase and adversarial + false-positive corpora.