fix: 设置页脚本因重复声明 xt 整体加载失败（服务商选不了、所有设置不生效）

- settings.js 的局部变量改名为 api，避开 contextBridge 暴露的不可重声明全局 xt
- dev-mock 按 contextBridge 的方式定义 xt，浏览器预览也能暴露同类问题
- 加测试：渲染脚本禁止在顶层声明 xt
- 版本 0.1.2

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "xtranslate",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "xtranslate",
-      "version": "0.1.1",
+      "version": "0.1.2",
       "dependencies": {
         "koffi": "3.3.2"
       },

package.json

@@ -1,7 +1,7 @@
 {
   "name": "xtranslate",
   "productName": "Xtranslate",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "中英互译输入法：热键呼出，打字即译，口语化",
   "main": "src/main/main.js",
   "private": true,

src/renderer/dev-mock.js

@@ -10,7 +10,8 @@ if (!window.xt) {
   const canned = { '我先撤了哈，明天见': "I'm heading out, see you tomorrow!", 'No worries, take your time!': '没事没事，你慢慢来！' };
   const timers = {};
   const merge = (a, b) => { for (const k in b) a[k] = b[k] && typeof b[k] === 'object' && !Array.isArray(b[k]) ? merge({ ...(a[k] || {}) }, b[k]) : b[k]; return a; };
-  window.xt = {
+  // 和 contextBridge 一样定义成不可重声明的全局，页面里再写 const xt 会像在 Electron 里一样报错
+  Object.defineProperty(window, 'xt', { configurable: false, enumerable: true, writable: false, value: {
     translate({ id, text, engine }) {
       const full = canned[text.trim()] || (/[一-鿿]/.test(text) ? `(mock EN) ${text}` : `（模拟中文）${text}`);
       if ((engine || cfg.engine) === 'llm' && !cfg.llm.apiKeySet) return Promise.reject(new Error('还没填大模型的 API Key，去设置里填一下'));
@@ -49,6 +50,6 @@ if (!window.xt) {
       : { ok: true, sample: "I'm heading out, see you tomorrow!", ms: 420 },
     openSettings: () => console.log('[mock] openSettings'),
     onConfigChanged: (cb) => listeners.config.push(cb),
-  };
+  } });
   document.documentElement.style.background = '#8a93a3';
 }

src/renderer/settings.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const $ = (id) => document.getElementById(id);
-const xt = window.xt;
+const api = window.xt; // 不能叫 xt：contextBridge 已把 xt 定义为不可重声明的全局
 let providers = [];
 let cfg = null;
 
@@ -14,7 +14,7 @@ function setResult(el, text, kind) {
 
 async function save(partial) {
   try {
-    cfg = await xt.setConfig(partial);
+    cfg = await api.setConfig(partial);
     render();
     return true;
   } catch (e) {
@@ -92,7 +92,7 @@ for (const btn of document.querySelectorAll('[data-test]')) {
         await save(partial);
         $('llm-key').value = '';
       }
-      const r = await xt.testEngine({ engine });
+      const r = await api.testEngine({ engine });
       if (r.ok) setResult(out, `✓ ${r.sample}（${r.ms} ms）`, 'ok');
       else setResult(out, r.error || '失败', 'err');
     } catch (e) {
@@ -160,11 +160,11 @@ hk.addEventListener('keydown', async (e) => {
   }
 });
 
-xt.onConfigChanged((c) => { cfg = c; render(); });
+api.onConfigChanged((c) => { cfg = c; render(); });
 
 (async () => {
-  providers = await xt.getProviders();
+  providers = await api.getProviders();
   $('llm-provider').replaceChildren(...providers.map((p) => Object.assign(document.createElement('option'), { value: p.id, textContent: p.name })));
-  cfg = await xt.getConfig();
+  cfg = await api.getConfig();
   render();
 })();

test/syntax.test.js

@@ -26,3 +26,11 @@ test('src 下所有 JS 文件语法正确', () => {
     }
   }
 });
+
+test('渲染进程脚本不在顶层声明 xt（会与 contextBridge 暴露的全局冲突，整个脚本加载失败）', () => {
+  const dir = path.join(__dirname, '..', 'src', 'renderer');
+  for (const name of fs.readdirSync(dir).filter((n) => n.endsWith('.js') && n !== 'dev-mock.js')) {
+    const src = fs.readFileSync(path.join(dir, name), 'utf8');
+    assert.doesNotMatch(src, /^(const|let|var|function|class)\s+xt\b/m, name);
+  }
+});