Toolchain-Architecture.md: - Added extractors module to current state - New Phase 1D section: Corpus Extraction Pipeline - VocabExtractor and CoOccurrenceAnalyzer documentation - RAG policy integration table TOOLCHAIN-PROGRESS.md: - Phase 1D complete (2025-12-13) - 7 files created, 19 total tasks complete - Key metrics: 5,243 terms, 18,169 co-occurrence pairs - 20 anchor signatures for DriftProbe-lite 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>