Specifies replacing exact substring matching with token-aware fuzzy
matching as the default across all search tools, plus relevance ranking
and wider content coverage (wiki body text, work package descriptions
and comments, meeting participants and project names).
Key decisions:
- Hand-rolled zero-dependency scorer in src/search/; fuse.js rejected
because its Bitap implementation caps patterns at 32 chars and targets
short fields, not the long-text matching required here.
- matchMode: 'fuzzy' | 'exact' escape hatch, defaulting to fuzzy, with
exact mode preserving current behaviour byte-for-byte.
- Two-phase pipeline: cheap shallow rank, deep-enrich top 25 with
bounded concurrency, recency backfill for deep-only matches.
Also records two known limitations left out of scope: the two-phase
recall ceiling and the wiki cache's ID 1..50 probe window.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
