Fix withDb: catch all non-Response errors as DB failures

The previous version checked for specific error messages that
didn't match Drizzle's actual error text ("Failed query").
Now any error from a withDb-wrapped handler returns 503.
React Router Response objects are still re-thrown.

Verified: DB down → 503 JSON, DB up → 201, home page always 200.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/db/src/index.ts

@@ -20,21 +20,17 @@ export type Database = ReturnType<typeof createDb>;
  */
 export function withDb<T>(handler: () => Promise<T>): Promise<T> {
   return handler().catch((error) => {
-    if (error instanceof Response) throw error; // Re-throw React Router responses (redirects, data())
-    const message = error instanceof Error ? error.message : "Unknown error";
-    if (
-      message.includes("connect") ||
-      message.includes("ECONNREFUSED") ||
-      message.includes("DrizzleQueryError") ||
-      message.includes("AggregateError") ||
-      message.includes("database")
-    ) {
-      throw new Response(JSON.stringify({ error: "Database unavailable" }), {
-        status: 503,
-        headers: { "Content-Type": "application/json" },
-      });
-    }
-    throw error;
+    // Re-throw React Router responses (redirects, data() throws)
+    if (error instanceof Response) throw error;
+
+    // Any other error from a DB-wrapped handler is treated as DB unavailable
+    const message = error instanceof Error ? error.message : String(error);
+    console.error("[withDb] Database error:", message);
+
+    throw new Response(JSON.stringify({ error: "Database unavailable" }), {
+      status: 503,
+      headers: { "Content-Type": "application/json" },
+    });
   });
 }