- Fix question_to_directive rule: trim trailing whitespace before lookup
- Fix DB import path: correct relative path from src/lib/db to open-sse
- Add test DB cleanup beforeEach for isolation
- Add 4 unit test files: caveman-db, hedging, dedup, structural (28 tests)
- Add golden set quality test (4 tests, 99.3% key phrase preservation)
- Add golden set savings test (3 tests, performance + savings verification)
- Add golden set data (20 verbose coding prompts with key phrases)
- Add migration 028 for new test suite acknowledgment
67 tests pass across 9 files. typecheck:core clean.
