Added Backend

backend/src/routes/health.ts

@@ -0,0 +1,14 @@
+import { FastifyInstance } from "fastify";
+
+export default async function routes(server: FastifyInstance) {
+    server.get("/ping", async () => {
+        // Testquery gegen DB
+        const { data, error } = await server.supabase.from("tenants").select("id").limit(1);
+
+        return {
+            status: "ok",
+            db: error ? "not connected" : "connected",
+            tenant_count: data?.length ?? 0
+        };
+    });
+}