feat(darkwatch): implement DarkWatch tRPC router and service layer
- Add darkwatch router with procedures: getWatchlist, addWatchlistItem,
removeWatchlistItem, getExposures, getExposureDetails, runScan,
getScanStatus, getReports
- Add darkwatch service with watchlist CRUD, exposure queries,
scan orchestration, tier limit enforcement, report listing
- Add scan engine with HIBP, SecurityTrails, Censys, Shodan, and
forum scraping modules (circuit breaker pattern, env-var API keys)
- Add alert pipeline with severity scoring, deduplication, and
exposure-to-alert creation
- Add valibot schemas for input validation
- Register router in root.ts
- Write unit tests for router procedures, service functions,
and severity scoring (21 tests passing)
Michael Freno
b2c3470a71