feat: add infrastructure checks (DB exists, Spaces prefix) to customer overview

src/routes/customers.ts

@@ -219,19 +219,44 @@ export async function customerRoutes(app: FastifyInstance) {
       statusEntry = { data: liveStatus, cachedAt: new Date().toISOString() };
     }
 
-    // ── Size history (last 30 days) ───────────────────────────────────────────
-    const sizeHistory = await db`
-      SELECT recorded_at, db_size_bytes, spaces_size_bytes, spaces_object_count
-      FROM customer_size_snapshots
-      WHERE slug = ${slug}
-      ORDER BY recorded_at DESC
-      LIMIT 30
-    `;
+    // ── Infrastructure checks ─────────────────────────────────────────────────
+    const [dbCheck, sizeHistory, secrets] = await Promise.allSettled([
+      // Try connecting to the customer DB
+      (async () => {
+        const sql = postgres(config.doadminDbUrl.replace(/\/([^/?]+)(\?|$)/, `/${slug}$2`), { max: 1, connect_timeout: 5 });
+        try {
+          await sql`SELECT 1`;
+          return true;
+        } finally {
+          await sql.end();
+        }
+      })(),
+      db`
+        SELECT recorded_at, db_size_bytes, spaces_size_bytes, spaces_object_count
+        FROM customer_size_snapshots
+        WHERE slug = ${slug}
+        ORDER BY recorded_at DESC
+        LIMIT 30
+      `,
+      getSecret(namespace, "lunarfront-secrets").catch(() => null),
+    ]);
+
+    const dbExists = dbCheck.status === "fulfilled" ? dbCheck.value : false;
+    const secretData = secrets.status === "fulfilled" ? secrets.value : null;
+    const infra = {
+      database: { exists: dbExists },
+      spaces: {
+        configured: !!(secretData?.["spaces-prefix"]),
+        bucket: secretData?.["spaces-bucket"] ?? null,
+        prefix: secretData?.["spaces-prefix"] ?? null,
+      },
+    };
 
     return reply.send({
       customer,
       status: { ...statusEntry.data, cachedAt: statusEntry.cachedAt },
-      sizeHistory,
+      infra,
+      sizeHistory: sizeHistory.status === "fulfilled" ? sizeHistory.value : [],
     });
   });