修改架构，移动端优先。

save

server/index.js

@@ -0,0 +1,47 @@
+import 'dotenv/config'
+import path from 'node:path'
+import fs from 'node:fs'
+import express from 'express'
+import cors from 'cors'
+import authRouter from './routes/auth.js'
+import dataRouter from './routes/data.js'
+import articlesRouter from './routes/articles.js'
+
+const PORT = Number(process.env.PORT) || 3001
+const DIST_DIR = path.join(process.cwd(), 'dist')
+const HAS_DIST = fs.existsSync(DIST_DIR)
+
+const app = express()
+app.use(cors())
+app.use(express.json())
+
+// 健康检查
+app.get('/api/health', (_req, res) => res.json({ ok: true, ts: Date.now() }))
+
+// 业务路由
+app.use('/api/auth', authRouter)
+app.use('/api', dataRouter)
+app.use('/api', articlesRouter)
+
+// 静态资源 (Vite build 产物)
+if (HAS_DIST) {
+  app.use(express.static(DIST_DIR, { index: false, maxAge: '1h', etag: true }))
+
+  // SPA fallback: 非 /api/* 的请求一律返回 index.html, 由前端路由处理
+  app.get(/^\/(?!api\/).*/, (_req, res, next) => {
+    const indexHtml = path.join(DIST_DIR, 'index.html')
+    if (!fs.existsSync(indexHtml)) return next()
+    res.sendFile(indexHtml)
+  })
+}
+
+// 统一错误处理
+app.use((err, _req, res, _next) => {
+  console.error('[api error]', err)
+  res.status(500).json({ error: err.message || '服务器内部错误' })
+})
+
+app.listen(PORT, () => {
+  console.log(`[iboard-api] listening on http://127.0.0.1:${PORT}`)
+  console.log(`[iboard-api] static dist: ${HAS_DIST ? DIST_DIR : '(not built, API only)'}`)
+})