First cut

index.js

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+import 'dotenv/config';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+import Fastify from 'fastify';
+import multipart from '@fastify/multipart';
+import staticFiles from '@fastify/static';
+import websocket from '@fastify/websocket';
+import { initDb } from './db/models.js';
+import { jobRoutes } from './routes/jobs.js';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const PORT = parseInt(process.env.PORT ?? '3000', 10);
+
+const fastify = Fastify({ logger: { level: 'info' } });
+
+// ---------------------------------------------------------------------------
+// Plugins
+// ---------------------------------------------------------------------------
+await fastify.register(multipart, {
+  limits: {
+    fileSize: 20 * 1024 * 1024, // 20 MB max image
+    files: 1,
+  },
+});
+
+await fastify.register(websocket);
+
+// Serve the built React app — dist/ is built by `npm run dev` (watch)
+// or `npm run build` before starting in production.
+await fastify.register(staticFiles, {
+  root: join(__dirname, 'dist'),
+  prefix: '/',
+});
+
+// ---------------------------------------------------------------------------
+// Routes
+// ---------------------------------------------------------------------------
+await fastify.register(jobRoutes);
+
+fastify.get('/api/health', async () => ({ ok: true }));
+
+// SPA fallback — let React Router handle any path Fastify doesn't recognise
+fastify.setNotFoundHandler((_req, reply) => {
+  reply.sendFile('index.html');
+});
+
+// ---------------------------------------------------------------------------
+// Boot
+// ---------------------------------------------------------------------------
+await initDb();
+await fastify.listen({ port: PORT, host: '0.0.0.0' });
+console.log(`✅  Server listening on http://localhost:${PORT}`);