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）

package.json

@@ -65,7 +65,7 @@
     "views": {
       "code-reviewer": [
         {
-          "type": "tree",
+          "type": "webview",
           "id": "codeReviewer.setupView",
           "name": "设置"
         }
@@ -100,10 +100,10 @@
           "default": "deepseek-chat",
           "description": "AI 模型名称"
         },
-        "vscode-code-reviewer.ai.endpoint": {
+        "vscode-code-reviewer.ai.baseUrl": {
           "type": "string",
           "default": "https://api.deepseek.com/v1",
-          "description": "API 端点"
+          "description": "API Base URL"
         },
         "vscode-code-reviewer.ai.temperature": {
           "type": "number",
@@ -217,7 +217,7 @@
     }
   },
   "scripts": {
-    "compile": "tsc -p ./",
+    "compile": "tsc -p ./ && node scripts/copy-webview-js.mjs",
     "watch": "tsc -watch -p ./",
     "build": "node scripts/build.mjs",
     "vscode:prepublish": "npm run build",