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/projects.ts

@@ -47,6 +47,12 @@ export const projects = [
 		href: '/projects/money-tracker',
 		external: false
 	},
+	{
+		name: 'house tracker',
+		subtitle: 'Dutch rental and sale listings, with alerts',
+		href: '/projects/house-tracker',
+		external: false
+	},
 	{
 		name: 'cs prices',
 		subtitle: 'Counter-Strike market prices across time',