scripts/indexer.mjs indexJsonl used INSERT OR REPLACE (rowid/FTS churn) and
carried message_count forward on full re-scan; align to app's ON CONFLICT upsert
+ count reset so the two indexers no longer silently diverge. Regression test added.
search() falls back to safe per-token quoting on malformed FTS input instead of
crashing (documented in api-reference.md). Adds raw() to the doc-synced shape
contract. Full suite 107/107.
tommy0103