feat(M01-A): 建立后端API基础骨架

backend/src/server.ts

@@ -0,0 +1,12 @@
+import { buildApp } from './app.js';
+import { loadConfig } from './config.js';
+
+const config = loadConfig();
+const app = await buildApp({ config });
+
+try {
+  await app.listen({ host: config.host, port: config.port });
+} catch (error) {
+  app.log.error(error);
+  process.exit(1);
+}