backend: add static serving + multi-stage Dockerfile, website: add API test dashboard

backend/src/index.ts

@@ -1,12 +1,15 @@
 import 'dotenv/config';
+import path from 'path';
+import { fileURLToPath } from 'url';
 import cors from 'cors';
 import express, { type NextFunction, type Request, type Response } from 'express';
-import cron from 'node-cron';
 import { buildApiPath, getConfig } from './config';
 import { TursoClient } from './lib/db';
 import { createHealthRouter } from './routes/health';
 import { createTodosRouter } from './routes/todos';
 
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
 const config = getConfig();
 const app = express();
 const db = new TursoClient(config);
@@ -19,24 +22,14 @@ const apiRoot = config.apiPrefix || '/';
 app.use(apiRoot, createHealthRouter(config));
 app.use(apiRoot, createTodosRouter(config, db));
 
-// 1. Cron Job A: Runs every 3 minutes
-cron.schedule('*/3 * * * *', () => {
-  console.log('[Cron A] Heartbeat executing every 3 minutes: ' + new Date().toISOString());
-});
+const publicDir = path.join(__dirname, '../public');
+app.use(express.static(publicDir));
 
-// 2. Cron Job B: Runs every 10 minutes
-cron.schedule('*/10 * * * *', () => {
-  console.log('[Cron B] Heartbeat executing every 10 minutes: ' + new Date().toISOString());
-});
-
-// 3. Cloud Run Cron Tick endpoint (No-op to wake up event loop)
-app.post('/_cron/tick', (req, res) => {
-  const authHeader = req.headers.authorization;
-  if (!authHeader || authHeader !== 'Bearer ' + process.env.CRON_TOKEN) {
-    return res.status(401).json({ success: false, error: 'Unauthorized' });
-  }
-  console.log('[Tick] Heartbeat received. Waking up event loop.');
-  res.status(200).json({ success: true });
+app.get('*', (req, res, next) => {
+  if (req.path.startsWith(apiRoot)) return next();
+  res.sendFile(path.join(publicDir, 'index.html'), (err) => {
+    if (err) next();
+  });
 });
 
 app.use((_req, res) => {