Add debug endpoint for todos DB diagnostics

backend/src/routes/todos.ts

@@ -2,6 +2,7 @@ import { Elysia, t } from "elysia";
 import { db } from "../db";
 import { todos } from "../db/schema";
 import { eq, and, asc, desc, sql } from "drizzle-orm";
+import type { SQL } from "drizzle-orm";
 import { auth } from "../lib/auth";
 
 const BEARER_TOKEN = process.env.API_BEARER_TOKEN || "hammer-dev-token";
@@ -33,7 +34,22 @@ export const todoRoutes = new Elysia({ prefix: "/api/todos" })
     }
     console.error("Todo route error:", msg);
     set.status = 500;
-    return { error: "Internal server error" };
+    return { error: "Internal server error", debug: msg };
+  })
+
+  // Debug endpoint - test DB connectivity for todos table
+  .get("/debug", async () => {
+    try {
+      const result = await db.execute(sql`SELECT EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'todos')`);
+      const enumResult = await db.execute(sql`SELECT EXISTS (SELECT FROM pg_type WHERE typname = 'todo_priority')`);
+      return { 
+        todosTableExists: result, 
+        todoPriorityEnumExists: enumResult,
+        dbConnected: true 
+      };
+    } catch (e: any) {
+      return { error: e.message, dbConnected: false };
+    }
   })
 
   // GET all todos for current user