feat: 实现试用用户欢迎引导和过期检测功能

- 新增试用用户首次登录欢迎弹窗，展示使用教程
- 新增试用期过期检测服务和过期提醒弹窗
- 从 JWT token 中提取 ispluginTrial 标识判断用户类型
- 试用用户跳过邀请码验证流程
- 在消息发送前检查试用期是否过期
- 新增 ExpiredPanel 和 WelcomePanel 面板组件
- 新增 expiredModal 和 welcomeModal 视图组件
- 优化用户登录流程，根据用户类型显示不同引导

src/panels/ICHelperPanel.ts

@@ -426,12 +426,55 @@ export async function showICHelperPanel(
         case "checkInvitationCode":
           // 检查邀请码验证状态
           {
-            const { InvitationService } = require("../services/invitationService");
-            const isVerified = await InvitationService.isVerified(context);
-            panel.webview.postMessage({
-              command: "invitationCodeStatus",
-              verified: isVerified
-            });
+            // 先检查是否是试用用户
+            const { getCachedUserInfo } = require("../services/userService");
+            const userInfo = getCachedUserInfo();
+
+            if (userInfo?.isPluginTrial === true) {
+              // 试用用户，跳过邀请码验证，直接返回已验证
+              console.log('[ICHelperPanel] 试用用户，跳过邀请码验证');
+              panel.webview.postMessage({
+                command: "invitationCodeStatus",
+                verified: true
+              });
+            } else {
+              // 正式用户，检查邀请码
+              const { InvitationService } = require("../services/invitationService");
+              const isVerified = await InvitationService.isVerified(context);
+              panel.webview.postMessage({
+                command: "invitationCodeStatus",
+                verified: isVerified
+              });
+            }
+          }
+          break;
+        case "checkWelcomeModal":
+          // 检查是否需要显示欢迎弹窗
+          {
+            console.log('[ICHelperPanel] 收到 checkWelcomeModal 消息');
+            const showWelcome = context.globalState.get('showWelcomeModal');
+            console.log('[ICHelperPanel] showWelcomeModal 标记值:', showWelcome);
+
+            if (showWelcome) {
+              // 清除标记并显示欢迎弹窗
+              await context.globalState.update('showWelcomeModal', undefined);
+              console.log('[ICHelperPanel] ✅ 发送 showWelcomeModal 命令到前端');
+              panel.webview.postMessage({
+                command: "showWelcomeModal"
+              });
+            } else {
+              console.log('[ICHelperPanel] showWelcomeModal 标记为 false，不显示弹窗');
+            }
+          }
+          break;
+        case "checkTrialExpiration":
+          // 检查试用期是否过期
+          {
+            console.log('[ICHelperPanel] 收到 checkTrialExpiration 消息');
+            const { TrialExpirationService } = require("../services/trialExpirationService");
+            const trialService = new TrialExpirationService(context, panel);
+            const isExpired = await trialService.checkExpiration();
+            console.log('[ICHelperPanel] 试用期过期状态:', isExpired);
           }
           break;
         case "verifyInvitationCode":