fix(health): check DB connectivity in health endpoint

src/pages/api/health.ts

@@ -1,15 +1,27 @@
 import type { APIRoute } from "astro";
+import { db } from "@/db/client";
+import { sql } from "drizzle-orm";
 
 export const prerender = false;
 
-export const GET: APIRoute = () => {
-  return new Response(
-    JSON.stringify({ status: "ok" }),
-    {
-      status: 200,
-      headers: {
-        "Content-Type": "application/json",
-      },
-    }
-  );
+export const GET: APIRoute = async () => {
+  try {
+    await db.execute(sql`SELECT 1`);
+    return new Response(
+      JSON.stringify({ status: "ok", db: "connected" }),
+      {
+        status: 200,
+        headers: { "Content-Type": "application/json" },
+      }
+    );
+  } catch (err) {
+    console.error("[Health] DB connection failed:", err);
+    return new Response(
+      JSON.stringify({ status: "error", db: "disconnected", error: String(err) }),
+      {
+        status: 503,
+        headers: { "Content-Type": "application/json" },
+      }
+    );
+  }
 };