feat: house tracker with home worker, alerts and listing map

Collects Pararius rent/buy listings into Postgres via a worker that runs on a
residential connection, sends Discord/ntfy alerts for new listings matching
rules, and shows an admin-only map, market stats and worker log.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013HfF5tnChi8tkCx9svJP6D

src/lib/server/db/schema/index.ts

@@ -10,3 +10,4 @@ export * from './animaldex';
 export * from './lists';
 export * from './money-tracker';
 export * from './cs-prices';
+export * from './house-tracker';