feat: add /api/health endpoint for deployment health checks

src/routes/api/health/+server.ts

@@ -0,0 +1,18 @@
+import { json } from '@sveltejs/kit';
+import { getJob } from '$lib/server/db.js';
+
+export async function GET() {
+	try {
+		// Real DB query: check if we can fetch a job.
+		// If no jobs exist, this succeeds with null (schema exists and is reachable).
+		// If schema doesn't exist or DB is down, this throws.
+		getJob('no-such-job');
+
+		return json({ status: 'ok' }, { status: 200 });
+	} catch (err) {
+		return json(
+			{ status: 'error', message: String(err) },
+			{ status: 500 }
+		);
+	}
+}