refactor: 重构为 Webview Review 面板架构

- 移除旧的 DiffEngine、InlineDecorator、CodeLensProvider 等模块
- 新增 ChangeSetManager 统一管理代码变更快照
- 新增 reviewPanel.ts 实现双栏 Review Webview 面板
- 简化 hookHandler.ts，直接通过 ChangeSet 收集变更
- 简化 extension.ts 入口，移除冗余模块导入
- 更新 types.ts，精简 ChangeSet 和 ChangeEntry 类型定义
- package.json 添加 onStartupFinished 激活事件

.claude/settings.json

@@ -0,0 +1,27 @@
+{
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": "Write|Edit",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node -e \"const fs=require('fs'),p=require('path'),d=p.join(process.env.CLAUDE_PLUGIN_ROOT||'.','.claude','hooks');let b='';process.stdin.on('data',c=>b+=c);process.stdin.on('end',()=>{try{const j=JSON.parse(b);const e={type:'edit',filePath:j.tool_input?.file_path||j.tool_response?.filePath||'',content:j.tool_input?.content||'',oldString:j.tool_input?.old_string||'',newString:j.tool_input?.new_string||'',timestamp:Date.now(),toolName:j.tool_name};fs.mkdirSync(d,{recursive:true});const t=p.join(d,'pending.json'),tmp=t+'.tmp';fs.writeFileSync(tmp,JSON.stringify(e));fs.renameSync(tmp,t)}catch{}})\"",
+            "timeout": 5
+          }
+        ]
+      }
+    ],
+    "Stop": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node -e \"const fs=require('fs'),p=require('path'),d=p.join(process.env.CLAUDE_PLUGIN_ROOT||'.','.claude','hooks');try{fs.mkdirSync(d,{recursive:true});const t=p.join(d,'pending.json'),tmp=t+'.tmp';fs.writeFileSync(tmp,JSON.stringify({type:'stop',filePath:'',content:'',oldString:'',newString:'',timestamp:Date.now(),toolName:'Stop'}));fs.renameSync(tmp,t)}catch{}\"",
+            "timeout": 5
+          }
+        ]
+      }
+    ]
+  }
+}