feat: 集成 VSCode Authentication API 实现用户登录

- 新增 Authentication Provider，登录信息显示在左下角
- 支持浏览器登录并自动回调
- 登录/登出后自动刷新窗口
- 侧边栏根据登录状态显示不同按钮

src/extension.ts

@@ -3,10 +3,21 @@ import { ICViewProvider } from "./views/ICViewProvider";
 import { showICHelperPanel } from "./panels/ICHelperPanel";
 import { VCDViewerPanel } from "./panels/VCDViewerPanel";
 import { ChatHistoryManager } from "./utils/chatHistoryManager";
+import { ICCoderAuthenticationProvider } from "./services/icCoderAuthProvider";
 
 export function activate(context: vscode.ExtensionContext) {
   console.log("🎉 IC Coder 插件已激活！");
 
+  // 注册 Authentication Provider
+  const authProvider = new ICCoderAuthenticationProvider(context);
+  context.subscriptions.push(
+    vscode.authentication.registerAuthenticationProvider(
+      "iccoder",
+      "IC Coder",
+      authProvider
+    )
+  );
+
   // 自动打开聊天面板
   vscode.commands.executeCommand("ic-coder.openChat");
 
@@ -54,6 +65,40 @@ export function activate(context: vscode.ExtensionContext) {
     }
   );
 
+  // 注册命令：用户登录
+  const loginCommand = vscode.commands.registerCommand(
+    "ic-coder.login",
+    async () => {
+      try {
+        await vscode.authentication.getSession("iccoder", [], { createIfNone: true });
+      } catch (error) {
+        vscode.window.showErrorMessage(`登录失败: ${error}`);
+      }
+    }
+  );
+
+  // 注册命令：用户登出
+  const logoutCommand = vscode.commands.registerCommand(
+    "ic-coder.logout",
+    async () => {
+      try {
+        const session = await vscode.authentication.getSession("iccoder", [], { createIfNone: false });
+        if (session) {
+          // 通过创建新会话并清除偏好来实现登出
+          await vscode.authentication.getSession("iccoder", [], {
+            clearSessionPreference: true,
+            forceNewSession: true
+          });
+          vscode.window.showInformationMessage("已退出登录");
+        } else {
+          vscode.window.showInformationMessage("当前未登录");
+        }
+      } catch (error) {
+        vscode.window.showInformationMessage("当前未登录");
+      }
+    }
+  );
+
   // 注册命令：查看会话历史
   // TODO: 这些命令需要根据新的任务架构重新实现
   // 暂时注释掉，等待重新实现
@@ -102,7 +147,7 @@ export function activate(context: vscode.ExtensionContext) {
   */
 
   // 注册侧边栏视图
-  const viewProvider = new ICViewProvider(context.extensionUri);
+  const viewProvider = new ICViewProvider(context.extensionUri, context);
   const viewRegistration = vscode.window.registerWebviewViewProvider(
     "ic-coder.mainView",
     viewProvider
@@ -113,6 +158,8 @@ export function activate(context: vscode.ExtensionContext) {
     openPanelCommand,
     openChatCommand,
     openVCDViewerCommand,
+    loginCommand,
+    logoutCommand,
     // TODO: 等待重新实现这些命令
     // viewHistoryCommand,
     // newSessionCommand,