CodeVetter v1.1.46

Local-mode verified build.\n\n- Adds FTS-backed search over normalized session_message_archive rows.\n- Adds a Roadmap session archive search panel with adapter/kind filters.\n- Emits session_archive_updated after manual re-index and refreshes active archive searches.\n- Guards full index passes with a process-wide mutex to prevent startup/periodic archive replacement races.\n- Rebuilds the archive FTS index when counts drift instead of using slow missing-row scans.\n\nVerification before release:\n- cargo test: 92 passed\n- TypeScript: no errors\n- npm run lint: passed\n- npm run build: passed\n- Local browser smoke: Home stayed usage-first; Roadmap rendered archive search controls\n- Installed /Applications/CodeVetter.app 1.1.46 and launched locally\n- Startup full index and queued periodic index completed without the prior unique constraint failure\n- Local DB smoke: session_message_archive and FTS counts matched; archive search returned real local hits