diff --git a/server.js b/server.js
deleted file mode 100644
index 8c73f8c..0000000
--- a/server.js
+++ /dev/null
@@ -1,633 +0,0 @@
-const express = require('express');
-const session = require('express-session');
-const bcrypt = require('bcryptjs');
-const multer = require('multer');
-const rateLimit = require('express-rate-limit');
-const crypto = require('crypto');
-const fs = require('fs');
-const path = require('path');
-
-const PORT = process.env.PORT || 3210;
-// 127.0.0.1 by default: on a VPS, Nginx fronts this with TLS and is the only
-// thing that should be reachable from outside. On the old local-Windows setup
-// this was 0.0.0.0 for LAN access; set HOST=0.0.0.0 explicitly if you still
-// need that. COOKIE_SECURE should be "true" once you're behind real HTTPS.
-const HOST = process.env.HOST || '127.0.0.1';
-const COOKIE_SECURE = process.env.COOKIE_SECURE === 'true';
-const DATA_FILE = path.join(__dirname, 'data.json');
-const PID_FILE = path.join(__dirname, 'server.pid');
-const FRONTEND_DIST = path.join(__dirname, '..', 'frontend', 'dist');
-const UPLOADS_DIR = path.join(__dirname, 'uploads');
-const AUTH_FILE = path.join(__dirname, 'auth.json');
-const DEFAULT_USERNAME = 'admin';
-const DEFAULT_PASSWORD = 'admin123';
-
-if (!fs.existsSync(UPLOADS_DIR)) fs.mkdirSync(UPLOADS_DIR, { recursive: true });
-
-/* --------------------------------- auth ---------------------------------- */
-
-function loadAuth() {
-  if (!fs.existsSync(AUTH_FILE)) {
-    const auth = { username: DEFAULT_USERNAME, passwordHash: bcrypt.hashSync(DEFAULT_PASSWORD, 10) };
-    fs.writeFileSync(AUTH_FILE, JSON.stringify(auth, null, 2), 'utf8');
-    return auth;
-  }
-  try {
-    return JSON.parse(fs.readFileSync(AUTH_FILE, 'utf8'));
-  } catch (e) {
-    const auth = { username: DEFAULT_USERNAME, passwordHash: bcrypt.hashSync(DEFAULT_PASSWORD, 10) };
-    fs.writeFileSync(AUTH_FILE, JSON.stringify(auth, null, 2), 'utf8');
-    return auth;
-  }
-}
-function saveAuth(auth) {
-  fs.writeFileSync(AUTH_FILE, JSON.stringify(auth, null, 2), 'utf8');
-}
-
-/* ------------------------------ secret / crypto -------------------------- */
-// Used to encrypt the DeepSeek API key (and anything else sensitive) at
-// rest, so it isn't sitting around the filesystem as plain text.
-
-const SECRET_KEY_FILE = path.join(__dirname, '.secret-key');
-function getSecretKey() {
-  if (!fs.existsSync(SECRET_KEY_FILE)) {
-    const key = crypto.randomBytes(32);
-    fs.writeFileSync(SECRET_KEY_FILE, key.toString('base64'), { encoding: 'utf8', mode: 0o600 });
-    return key;
-  }
-  return Buffer.from(fs.readFileSync(SECRET_KEY_FILE, 'utf8').trim(), 'base64');
-}
-const SECRET_KEY = getSecretKey();
-
-function encrypt(text) {
-  if (!text) return '';
-  const iv = crypto.randomBytes(12);
-  const cipher = crypto.createCipheriv('aes-256-gcm', SECRET_KEY, iv);
-  const encrypted = Buffer.concat([cipher.update(text, 'utf8'), cipher.final()]);
-  const tag = cipher.getAuthTag();
-  return Buffer.concat([iv, tag, encrypted]).toString('base64');
-}
-function decrypt(b64) {
-  if (!b64) return '';
-  try {
-    const buf = Buffer.from(b64, 'base64');
-    const iv = buf.subarray(0, 12);
-    const tag = buf.subarray(12, 28);
-    const encrypted = buf.subarray(28);
-    const decipher = crypto.createDecipheriv('aes-256-gcm', SECRET_KEY, iv);
-    decipher.setAuthTag(tag);
-    return Buffer.concat([decipher.update(encrypted), decipher.final()]).toString('utf8');
-  } catch (e) {
-    return '';
-  }
-}
-
-/* --------------------------------- AI config ------------------------------ */
-
-const AI_CONFIG_FILE = path.join(__dirname, 'ai-config.json');
-// Lets you point this at a different OpenAI-compatible endpoint if needed
-// (e.g. testing against a mock server); defaults to the real DeepSeek API.
-const DEEPSEEK_API_BASE = process.env.DEEPSEEK_API_BASE || 'https://api.deepseek.com';
-
-function loadAiConfig() {
-  try {
-    const raw = JSON.parse(fs.readFileSync(AI_CONFIG_FILE, 'utf8'));
-    return { apiKey: decrypt(raw.apiKeyEnc || '') };
-  } catch (e) {
-    return { apiKey: '' };
-  }
-}
-function saveAiConfig(apiKey) {
-  fs.writeFileSync(AI_CONFIG_FILE, JSON.stringify({ apiKeyEnc: encrypt(apiKey) }, null, 2), 'utf8');
-}
-
-const REGION_LABELS = {
-  africa: 'Africa', middle_east: 'Middle East', australia: 'Australia/Oceania',
-  europe: 'Europe', sea: 'Southeast Asia', other: 'Other',
-};
-
-function buildCustomerContext(c) {
-  const lines = [];
-  lines.push(`Company: ${c.company || '(unknown / not on file)'}`);
-  if (c.contact) lines.push(`Contact person: ${c.contact}`);
-  const place = [c.country, REGION_LABELS[c.region]].filter(Boolean).join(', ');
-  if (place) lines.push(`Location: ${place}`);
-  if (c.productLines && c.productLines.length) lines.push(`Product interest: ${c.productLines.join(', ')}`);
-  if (c.intendedModel || c.intendedQty) {
-    lines.push(`Specific model interest: ${c.intendedModel || '(model unspecified)'}${c.intendedQty ? `, quantity: ${c.intendedQty}` : ''}`);
-  }
-  if (c.lastContact) lines.push(`Last contact date: ${c.lastContact}`);
-  if (c.notes) lines.push(`Background research on this customer: ${c.notes}`);
-  if (c.tags) lines.push(`Additional remarks: ${c.tags}`);
-  if (c.isVip) lines.push('This is a VIP / priority customer — extra attentive tone.');
-  if (c.hasOrdered) lines.push('This customer has already placed an order before — this follow-up is with an existing buyer, not a cold lead.');
-  return lines.join('\n');
-}
-
-async function callDeepSeek(apiKey, messages, opts) {
-  const { maxTokens = 600, temperature = 0.7, model = 'deepseek-v4-flash' } = opts || {};
-  const resp = await fetch(`${DEEPSEEK_API_BASE}/chat/completions`, {
-    method: 'POST',
-    headers: {
-      'Content-Type': 'application/json',
-      Authorization: `Bearer ${apiKey}`,
-    },
-    body: JSON.stringify({
-      model,
-      messages,
-      temperature,
-      max_tokens: maxTokens,
-    }),
-  });
-  if (!resp.ok) {
-    const errText = await resp.text().catch(() => '');
-    throw new Error(`DeepSeek API error ${resp.status}: ${errText.slice(0, 200)}`);
-  }
-  const data = await resp.json();
-  const content = data.choices && data.choices[0] && data.choices[0].message && data.choices[0].message.content;
-  if (!content) throw new Error('DeepSeek API returned an empty response');
-  return content;
-}
-
-// 从DeepSeek返回的内容里提取JSON——模型有时会用```json代码块包一层，或者前后带几句解释文字，
-// 这里做宽松解析：优先找代码块，找不到就找第一个 { 或 [ 到最后一个 } 或 ] 之间的内容。
-function extractJson(content) {
-  const fenced = content.match(/```(?:json)?\s*([\s\S]*?)```/i);
-  const raw = fenced ? fenced[1] : content;
-  const start = raw.search(/[\[{]/);
-  const endBrace = raw.lastIndexOf('}');
-  const endBracket = raw.lastIndexOf(']');
-  const end = Math.max(endBrace, endBracket);
-  if (start === -1 || end === -1 || end < start) throw new Error('AI返回内容里没有找到JSON');
-  return JSON.parse(raw.slice(start, end + 1));
-}
-
-/* ------------------------------ data file ------------------------------ */
-
-function readData() {
-  try {
-    return JSON.parse(fs.readFileSync(DATA_FILE, 'utf8'));
-  } catch (e) {
-    return {};
-  }
-}
-
-function writeData(data) {
-  // write to a temp file then rename, avoids corrupting data.json if the
-  // process is killed mid-write
-  const tmp = DATA_FILE + '.tmp';
-  fs.writeFileSync(tmp, JSON.stringify(data, null, 2), 'utf8');
-  fs.renameSync(tmp, DATA_FILE);
-}
-
-// only allow simple ids (our customer ids are like "c_169..._ab12c"),
-// this keeps the upload path from ever escaping the uploads/ folder
-function safeId(id) {
-  return /^[A-Za-z0-9_-]+$/.test(id) ? id : null;
-}
-
-/* --------------------------------- app ---------------------------------- */
-
-const app = express();
-
-// behind Nginx, Express needs this to read X-Forwarded-* correctly —
-// otherwise req.ip is always Nginx's own address (breaks rate limiting)
-// and the "secure" cookie flag can't tell the request was HTTPS.
-app.set('trust proxy', 1);
-
-app.use(express.json({ limit: '10mb' }));
-app.use(session({
-  secret: crypto.randomBytes(32).toString('hex'),
-  resave: false,
-  saveUninitialized: false,
-  cookie: {
-    httpOnly: true,
-    sameSite: 'lax',
-    secure: COOKIE_SECURE,
-    maxAge: 30 * 24 * 60 * 60 * 1000, // 30 days
-  },
-}));
-
-function requireAuth(req, res, next) {
-  if (req.session && req.session.authed) return next();
-  res.status(401).json({ error: 'not authenticated' });
-}
-
-const loginLimiter = rateLimit({
-  windowMs: 15 * 60 * 1000,
-  max: 5,
-  standardHeaders: true,
-  legacyHeaders: false,
-  message: { error: 'too many login attempts, please try again in a few minutes' },
-});
-
-/* -------------------------------- auth api ------------------------------- */
-
-app.post('/api/auth/login', loginLimiter, (req, res) => {
-  const body = req.body || {};
-  const username = body.username || '';
-  const password = body.password || '';
-  const auth = loadAuth();
-  if (username === auth.username && bcrypt.compareSync(password, auth.passwordHash)) {
-    req.session.authed = true;
-    req.session.username = username;
-    return res.json({ ok: true, username });
-  }
-  res.status(401).json({ error: 'invalid credentials' });
-});
-
-app.post('/api/auth/logout', (req, res) => {
-  if (req.session) {
-    req.session.destroy(() => res.json({ ok: true }));
-  } else {
-    res.json({ ok: true });
-  }
-});
-
-app.get('/api/auth/check', (req, res) => {
-  const authed = !!(req.session && req.session.authed);
-  res.json({ authed, username: authed ? req.session.username : null });
-});
-
-app.post('/api/auth/change-password', requireAuth, (req, res) => {
-  const body = req.body || {};
-  const currentPassword = body.currentPassword || '';
-  const newPassword = body.newPassword || '';
-  const auth = loadAuth();
-  if (!bcrypt.compareSync(currentPassword, auth.passwordHash)) {
-    return res.status(400).json({ error: 'current password is incorrect' });
-  }
-  if (newPassword.length < 4) {
-    return res.status(400).json({ error: 'new password is too short' });
-  }
-  auth.passwordHash = bcrypt.hashSync(newPassword, 10);
-  saveAuth(auth);
-  res.json({ ok: true });
-});
-
-/* ------------------------------ storage api ------------------------------ */
-
-app.get('/api/storage/:key', requireAuth, (req, res) => {
-  const data = readData();
-  const key = req.params.key;
-  if (!(key in data)) return res.status(404).json({ error: 'not found' });
-  res.json({ value: data[key] });
-});
-
-app.put('/api/storage/:key', requireAuth, (req, res) => {
-  const data = readData();
-  data[req.params.key] = req.body.value;
-  writeData(data);
-  res.json({ ok: true });
-});
-
-/* --------------------------------- ai api --------------------------------- */
-
-app.get('/api/ai-config', requireAuth, (req, res) => {
-  const cfg = loadAiConfig();
-  res.json({ hasKey: !!cfg.apiKey });
-});
-
-app.put('/api/ai-config', requireAuth, (req, res) => {
-  const apiKey = ((req.body && req.body.apiKey) || '').trim();
-  if (!apiKey) return res.status(400).json({ error: 'apiKey is required' });
-  saveAiConfig(apiKey);
-  res.json({ ok: true });
-});
-
-app.delete('/api/ai-config', requireAuth, (req, res) => {
-  try { fs.unlinkSync(AI_CONFIG_FILE); } catch (e) {}
-  res.json({ ok: true });
-});
-
-app.post('/api/ai-config/test', requireAuth, async (req, res) => {
-  const cfg = loadAiConfig();
-  if (!cfg.apiKey) return res.status(400).json({ error: 'no API key configured' });
-  try {
-    const content = await callDeepSeek(cfg.apiKey, [{ role: 'user', content: 'Reply with exactly: OK' }]);
-    res.json({ ok: true, reply: content.trim() });
-  } catch (e) {
-    res.status(400).json({ error: e.message });
-  }
-});
-
-const aiLimiter = rateLimit({
-  windowMs: 10 * 60 * 1000,
-  max: 30,
-  standardHeaders: true,
-  legacyHeaders: false,
-  message: { error: 'too many AI requests, please slow down' },
-});
-
-app.post('/api/ai/draft', requireAuth, aiLimiter, async (req, res) => {
-  const body = req.body || {};
-  const customerId = body.customerId;
-  const channel = body.channel;
-  if (!customerId || !['email', 'whatsapp'].includes(channel)) {
-    return res.status(400).json({ error: 'invalid request' });
-  }
-  const cfg = loadAiConfig();
-  if (!cfg.apiKey) return res.status(400).json({ error: 'DeepSeek API key not configured' });
-
-  const data = readData();
-  let customers = [];
-  try { customers = JSON.parse(data['crm:customers'] || '[]'); } catch (e) {}
-  const customer = customers.find((c) => c.id === customerId);
-  if (!customer) return res.status(404).json({ error: 'customer not found' });
-
-  const context = buildCustomerContext(customer);
-  const systemPrompt = 'You are a sales assistant helping a B2B export salesperson at a Chinese power-equipment company (UPS systems, rectifiers, solar inverters, battery storage) write natural, professional follow-up outreach to overseas customers. Always write in English. Never sound like a generic template, reference specifics from the customer info given. Output only the requested content, with no meta-commentary, explanations, or markdown formatting.';
-
-  const userPrompt = channel === 'email'
-    ? `Customer info:\n${context}\n\nWrite a short, warm but professional follow-up email to this customer. Respond in EXACTLY this format with no extra text:\nSUBJECT: <subject line>\nBODY:\n<email body, 3-5 short paragraphs max, sign off with "[Your name]">`
-    : `Customer info:\n${context}\n\nWrite a short, casual WhatsApp message to check in with this customer (2-4 sentences, friendly tone, no formal greeting like "Dear", a light emoji is fine if it feels natural). Respond with ONLY the message text, nothing else.`;
-
-  try {
-    const content = await callDeepSeek(cfg.apiKey, [
-      { role: 'system', content: systemPrompt },
-      { role: 'user', content: userPrompt },
-    ]);
-    if (channel === 'email') {
-      const subjectMatch = content.match(/SUBJECT:\s*(.+)/i);
-      const bodyMatch = content.match(/BODY:\s*([\s\S]*)/i);
-      res.json({
-        subject: subjectMatch ? subjectMatch[1].trim() : 'Following up',
-        body: bodyMatch ? bodyMatch[1].trim() : content.trim(),
-      });
-    } else {
-      res.json({ body: content.trim() });
-    }
-  } catch (e) {
-    res.status(502).json({ error: e.message });
-  }
-});
-
-/* --------------------------- ai catalog import --------------------------- */
-// 上传一份/多份PDF或图片形式的产品目录（可能包含多个型号），做OCR文字识别后交给
-// DeepSeek解析成结构化的产品字段数组，前端拿到后先给用户一个预览/确认页面，
-// 用户确认后再批量建档。
-//
-// 实测发现很多正式排版的产品目录PDF（比如设计软件导出的宣传册）整页都是图片/矢量
-// 图形，没有可提取的文字层，所以这里统一走"渲染成图片 + OCR"这条路，而不是直接
-// 提取PDF文字——这样PDF和图片两种输入方式可以复用同一套OCR逻辑。
-//
-// 依赖：
-//  1. npm包 tesseract.js（纯JS+WASM，不需要装系统级OCR程序，但第一次识别时会从
-//     jsdelivr CDN下载语言包，VPS需要能访问外网）
-//  2. 系统程序 poppler-utils，只有上传PDF时才需要，用来把PDF每页渲染成图片：
-//     apt install -y poppler-utils
-
-const { execFile } = require('child_process');
-const os = require('os');
-const Tesseract = require('tesseract.js');
-
-const uploadMemory = multer({
-  storage: multer.memoryStorage(),
-  limits: { fileSize: 20 * 1024 * 1024, files: 30 }, // 20MB/文件，最多30个文件
-});
-
-// 把一份PDF的每一页渲染成PNG图片（用poppler-utils的pdftoppm），返回图片路径数组
-function renderPdfToImages(pdfBuffer, tmpDir) {
-  return new Promise((resolve, reject) => {
-    const pdfPath = path.join(tmpDir, 'source.pdf');
-    fs.writeFileSync(pdfPath, pdfBuffer);
-    const outPrefix = path.join(tmpDir, 'page');
-    execFile('pdftoppm', ['-png', '-r', '200', pdfPath, outPrefix], (err) => {
-      if (err) {
-        return reject(new Error(
-          `PDF转图片失败，请确认服务器已安装 poppler-utils（SSH执行：apt install -y poppler-utils）：${err.message}`
-        ));
-      }
-      const files = fs.readdirSync(tmpDir)
-        .filter((f) => f.startsWith('page') && f.endsWith('.png'))
-        .sort()
-        .map((f) => path.join(tmpDir, f));
-      resolve(files);
-    });
-  });
-}
-
-// 复用同一个OCR worker，避免每次请求都重新初始化/重新下载语言包
-let ocrWorkerPromise = null;
-function getOcrWorker() {
-  if (!ocrWorkerPromise) {
-    ocrWorkerPromise = Tesseract.createWorker('eng+chi_sim').catch((e) => {
-      ocrWorkerPromise = null; // 初始化失败下次重试，不要把失败结果缓存住
-      throw e;
-    });
-  }
-  return ocrWorkerPromise;
-}
-
-async function ocrImages(imagePaths) {
-  const worker = await getOcrWorker();
-  const parts = [];
-  for (const p of imagePaths) {
-    const { data } = await worker.recognize(p);
-    if (data && data.text) parts.push(data.text.trim());
-  }
-  return parts.join('\n\n--- 下一页 ---\n\n').trim();
-}
-
-const CATALOG_PARSE_SYSTEM_PROMPT = `你是一个电力设备（UPS/逆变器/储能电池等）产品资料的结构化提取助手。
-用户会给你一份产品目录/规格书经OCR识别出的文字内容（可能包含多个不同型号的产品，每个产品通常有自己的Specifications表格；
-OCR识别可能有少量错字或格式错乱，请结合上下文合理判断）。
-你的任务：识别文本里有几个不同型号的产品，为每一个产品提取字段，严格按下面的JSON schema输出一个数组，每个元素是一个产品对象：
-
-{
-  "name": "型号，比如 POE-532E",
-  "brand": "品牌中文名，从厂家名称/logo文字判断；看不出就填空字符串",
-  "category": "产品大类中文名，从这些里选最接近的：UPS不间断电源 / 光伏逆变器 / 储能电池；不确定就填 UPS不间断电源",
-  "type": "细分品类中文名。如果是这种带USB/DC/POE多路直流输出口的小型UPS，填 迷你UPS；其他常见值：机架式UPS、高频塔式UPS、工频UPS、模块化UPS、在线互动式UPS、离线式UPS；不确定就留空字符串",
-  "machineVariant": "标机 或 长机：标准电池容量版本填标机，型号带L后缀或电池容量明显更大的加长版填长机，不确定就填标机",
-  "powerOrCapacity": "非UPS大类的功率/容量；如果是迷你UPS，这里填输出功率（如 17W）；其他情况不确定就填空字符串",
-  "voltage": "如果是迷你UPS，这里填输入电压，如 100~240Vac/50-60Hz；其他情况填常规电压参数，不确定填空字符串",
-  "ratedPower": "", "ratedPowerUnit": "VA", "powerFactor": "",
-  "outputPortCount": "迷你UPS专属：这个型号有几路输出口，数字字符串，如 4，不适用就填空字符串",
-  "outputPortTypes": "迷你UPS专属：输出口类型数组，只能用这些token：USB、DC、DC1、DC2、DC3、POE、Type-C、DC interface、POE interface；不适用就填空数组",
-  "outputPorts": "迷你UPS专属：数组，每项 {\\"type\\":\\"USB\\",\\"voltage\\":\\"5Vdc\\",\\"current\\":\\"3.0A\\"}，和outputPortTypes一一对应；不适用就填空数组",
-  "batterySpec": "电池数量和容量，如 2200mAh*4，不确定填空字符串",
-  "dimensions": "尺寸(mm)，如 175*105*30，不确定填空字符串",
-  "netWeight": "净重(kg)，如 0.4，不确定填空字符串",
-  "notes": "其他有用但上面字段装不下的信息，一两句话，没有就填空字符串"
-}
-
-只返回一个JSON数组，不要有任何解释文字、不要用markdown代码块包裹、不要省略任何一个识别到的型号。`;
-
-app.post('/api/ai/parse-catalog', requireAuth, aiLimiter, (req, res) => {
-  uploadMemory.array('files', 30)(req, res, async (err) => {
-    if (err) return res.status(400).json({ error: err.message });
-    if (!req.files || !req.files.length) return res.status(400).json({ error: 'no file received' });
-    const cfg = loadAiConfig();
-    if (!cfg.apiKey) return res.status(400).json({ error: 'DeepSeek API key not configured' });
-
-    // 用户可以提前告诉我们这批文件大概是什么大类/品牌/细分品类，这样AI不用自己瞎猜这几个字段，
-    // 只需要专心提取每个型号的具体规格参数；提供了的话，最后会直接用这几个值覆盖AI的猜测结果。
-    const hintCategory = (req.body && req.body.hintCategory || '').trim();
-    const hintBrand = (req.body && req.body.hintBrand || '').trim();
-    const hintType = (req.body && req.body.hintType || '').trim();
-
-    const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'catalog-ocr-'));
-    try {
-      const imagePaths = [];
-      for (const file of req.files) {
-        const isPdf = (file.mimetype || '').includes('pdf') || file.originalname.toLowerCase().endsWith('.pdf');
-        const isImage = (file.mimetype || '').startsWith('image/');
-        if (isPdf) {
-          const pdfSubDir = fs.mkdtempSync(path.join(tmpDir, 'pdf-'));
-          const pages = await renderPdfToImages(file.buffer, pdfSubDir);
-          imagePaths.push(...pages);
-        } else if (isImage) {
-          const ext = path.extname(file.originalname) || '.png';
-          const imgPath = path.join(tmpDir, `img_${imagePaths.length}${ext}`);
-          fs.writeFileSync(imgPath, file.buffer);
-          imagePaths.push(imgPath);
-        } else {
-          return res.status(400).json({ error: `不支持的文件类型：${file.originalname}（只支持PDF或图片）` });
-        }
-      }
-
-      const text = await ocrImages(imagePaths);
-      if (!text) return res.status(400).json({ error: 'OCR没有识别到任何文字，请确认文件清晰、内容完整' });
-
-      // 识别出来的文本太长就截断，避免超出模型输出预算；产品目录类文档核心信息通常靠前
-      const MAX_CHARS = 24000;
-      const clippedText = text.length > MAX_CHARS ? text.slice(0, MAX_CHARS) : text;
-
-      const hintLines = [];
-      if (hintCategory) hintLines.push(`产品大类：${hintCategory}`);
-      if (hintBrand) hintLines.push(`品牌：${hintBrand}`);
-      if (hintType) hintLines.push(`细分品类：${hintType}`);
-      const userContent = hintLines.length
-        ? `【用户已确认以下信息，直接使用，不用自己判断】\n${hintLines.join('\n')}\n\n【以下是OCR识别出的文档内容】\n${clippedText}`
-        : clippedText;
-
-      const content = await callDeepSeek(cfg.apiKey, [
-        { role: 'system', content: CATALOG_PARSE_SYSTEM_PROMPT },
-        { role: 'user', content: userContent },
-      ], { maxTokens: 4000, temperature: 0.2 });
-      const products = extractJson(content);
-      if (!Array.isArray(products)) throw new Error('AI没有返回预期的数组格式，请重试');
-      // 双保险：即使AI没完全听话，这里直接强制覆盖，保证和用户预选的一致
-      const finalProducts = products.map((p) => ({
-        ...p,
-        category: hintCategory || p.category,
-        brand: hintBrand || p.brand,
-        type: hintType || p.type,
-      }));
-      res.json({ products: finalProducts, ocrTextLength: text.length });
-    } catch (e) {
-      res.status(502).json({ error: e.message });
-    } finally {
-      try { fs.rmSync(tmpDir, { recursive: true, force: true }); } catch (e) {}
-    }
-  });
-});
-
-/* ------------------------------- ai translate ------------------------------ */
-// 给前端的翻译词条缓存（存在 crm:translationGlossary 里，走通用storage接口）兜底：
-// 前端自己先查缓存，只有命中不了的词才会调这个接口，这里只管翻译，不管缓存的存取。
-
-const LANG_NAMES = { en: 'English', fr: 'French', ru: 'Russian', es: 'Spanish', ar: 'Arabic' };
-
-app.post('/api/ai/translate-terms', requireAuth, aiLimiter, async (req, res) => {
-  const body = req.body || {};
-  const terms = Array.isArray(body.terms) ? body.terms.filter(t => typeof t === 'string' && t.trim()) : [];
-  const targetLang = body.targetLang;
-  if (!terms.length || !LANG_NAMES[targetLang]) return res.status(400).json({ error: 'invalid request' });
-
-  const cfg = loadAiConfig();
-  if (!cfg.apiKey) return res.status(400).json({ error: 'DeepSeek API key not configured' });
-
-  const systemPrompt = `你是专业的电力设备（UPS/逆变器/储能电池）技术资料翻译。把用户给出的中文技术/业务词汇逐条翻译成${LANG_NAMES[targetLang]}，
-要符合这个行业规范书面用词（不要逐字直译），单位符号（如Vdc、A、kg、mm）保持原样不翻译。
-严格按JSON对象格式返回：key是原始中文词，value是翻译结果，不要有多余文字、不要用markdown代码块包裹，每个词都必须有对应的翻译。`;
-  const userPrompt = JSON.stringify(terms);
-
-  try {
-    const content = await callDeepSeek(cfg.apiKey, [
-      { role: 'system', content: systemPrompt },
-      { role: 'user', content: userPrompt },
-    ], { maxTokens: 2000, temperature: 0.3 });
-    const translations = extractJson(content);
-    res.json({ translations });
-  } catch (e) {
-    res.status(502).json({ error: e.message });
-  }
-});
-
-/* ------------------------- communication attachments ------------------------- */
-
-const upload = multer({
-  storage: multer.diskStorage({
-    destination: (req, file, cb) => {
-      const cid = safeId(req.params.customerId);
-      if (!cid) return cb(new Error('invalid customer id'));
-      const dir = path.join(UPLOADS_DIR, cid);
-      fs.mkdirSync(dir, { recursive: true });
-      cb(null, dir);
-    },
-    filename: (req, file, cb) => {
-      const ts = Date.now();
-      const rand = Math.random().toString(36).slice(2, 8);
-      const ext = path.extname(file.originalname).slice(0, 10);
-      cb(null, `${ts}_${rand}${ext}`);
-    },
-  }),
-  limits: { fileSize: 25 * 1024 * 1024 }, // 25MB per file
-});
-
-app.post('/api/uploads/:customerId', requireAuth, (req, res) => {
-  if (!safeId(req.params.customerId)) return res.status(400).json({ error: 'invalid customer id' });
-  upload.single('file')(req, res, (err) => {
-    if (err) return res.status(400).json({ error: err.message });
-    if (!req.file) return res.status(400).json({ error: 'no file received' });
-    // multer/busboy 默认按 latin1 解析 multipart 里的文件名字段（这是老版HTTP规范的行为），
-    // 但浏览器实际发送的中文文件名是 UTF-8 字节，所以这里要把它从 latin1 转回 UTF-8，
-    // 不然中文文件名会变成乱码存进 data.json。
-    const originalName = Buffer.from(req.file.originalname, 'latin1').toString('utf8');
-    res.json({ fileName: req.file.filename, originalName, size: req.file.size });
-  });
-});
-
-app.delete('/api/uploads/:customerId/:fileName', requireAuth, (req, res) => {
-  const cid = safeId(req.params.customerId);
-  const fname = req.params.fileName;
-  const isSafeFile = fname && !fname.includes('..') && !fname.includes('/') && !fname.includes('\\');
-  if (!cid || !isSafeFile) return res.status(400).json({ error: 'invalid request' });
-  fs.unlink(path.join(UPLOADS_DIR, cid, fname), () => {
-    // a missing file is also treated as success, so clicking delete twice never errors
-    res.json({ ok: true });
-  });
-});
-
-app.use('/uploads', requireAuth, express.static(UPLOADS_DIR));
-
-app.use(express.static(FRONTEND_DIST));
-app.get('*', (req, res) => {
-  res.sendFile(path.join(FRONTEND_DIST, 'index.html'));
-});
-
-/* ------------------------------- bootstrap ------------------------------ */
-
-loadAuth(); // make sure auth.json exists with default credentials on first run
-
-fs.writeFileSync(PID_FILE, String(process.pid), 'utf8');
-process.on('exit', () => {
-  try { fs.unlinkSync(PID_FILE); } catch (e) {}
-});
-process.on('SIGINT', () => process.exit(0));
-process.on('SIGTERM', () => process.exit(0));
-
-const server = app.listen(PORT, HOST, () => {
-  console.log(`[customer-crm] running at http://${HOST}:${PORT}`);
-});
-
-server.on('error', (e) => {
-  if (e.code === 'EADDRINUSE') {
-    console.log('[customer-crm] another instance is already running on this port, exiting.');
-    try { fs.unlinkSync(PID_FILE); } catch (err) {}
-    process.exit(0);
-  }
-  throw e;
-});