feat: 设置面板 + Provider 扩展 + 构建脚本

- 设置面板：三步引导 / AI 配置 / API Key / 规则管理 / 连接测试
- Provider 重构：统一 OpenAICompatibleProvider 基类，新增 Gemini/Claude/混元/智谱等
- 审查面板 Webview：三 Tab、统计卡片、问题列表、postMessage 通信
- esbuild 构建脚本 + 生产打包 + PMD 下载
- 保存文件自动静态分析（500ms debounce）

scripts/build.mjs

@@ -39,4 +39,19 @@ if (existsSync(jarsSrc)) {
   cpSync(jarsSrc, jarsDest, { recursive: true, force: true });
 }
 
+/* copy webview JS files */
+const viewsSrc = resolve(rootDir, 'src', 'views');
+const viewsDest = resolve(outDir, 'views');
+if (existsSync(viewsSrc)) {
+  const files = ['setupView.js'];
+  for (const f of files) {
+    const src = resolve(viewsSrc, f);
+    const dest = resolve(viewsDest, f);
+    if (existsSync(src)) {
+      mkdirSync(dirname(dest), { recursive: true });
+      copyFileSync(src, dest);
+    }
+  }
+}
+
 console.log('Build complete.');

scripts/copy-webview-js.mjs

@@ -0,0 +1,18 @@
+import { copyFileSync, mkdirSync, existsSync } from 'fs';
+import { resolve, dirname } from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const rootDir = resolve(__dirname, '..');
+const outViews = resolve(rootDir, 'out', 'views');
+const srcViews = resolve(rootDir, 'src', 'views');
+
+const files = ['setupView.js'];
+for (const f of files) {
+  const src = resolve(srcViews, f);
+  const dest = resolve(outViews, f);
+  if (existsSync(src)) {
+    mkdirSync(dirname(dest), { recursive: true });
+    copyFileSync(src, dest);
+  }
+}