chore: scaffold node/ts/vitest project with health endpoint

server/src/index.ts

@@ -0,0 +1,15 @@
+import { buildApp } from './app.js'
+import { openDatabase } from './db.js'
+import type { Config } from './config.js'
+
+const config: Config = {
+  dataDir: process.env.DATA_DIR ?? 'data',
+  artworkDir: (process.env.DATA_DIR ?? 'data') + '/artwork-cache',
+  dbPath: (process.env.DATA_DIR ?? 'data') + '/record-shop.db',
+  port: Number(process.env.PORT ?? 3000),
+  sessionSecret: 'placeholder-replaced-in-task-3',
+}
+
+const db = openDatabase(config.dbPath)
+const app = await buildApp({ db, config })
+await app.listen({ port: config.port, host: '0.0.0.0' })