feat(URL协议): 增强URL协议注册健壮性

- 新增check_url_protocol_status命令检测注册状态
- 新增unregister_url_protocol命令取消注册
- 改进register_url_protocol命令增加验证逻辑
- 前端增加状态检测、自动重试和操作日志功能
- 更新多语言翻译支持新功能

src/App.tsx

@@ -36,6 +36,8 @@ import { ThemeProvider, useTheme } from "./contexts/ThemeContext"
 import { MOBILE_NAV_ITEMS, MobileNavKey, sanitizeMobileNavKeys } from "./shared/mobileNavigation"
 import { resolveStoredFontFamily } from "./shared/fontFamily"
 import { getPluginRuntime } from "./plugins/runtime"
+import { sectlCloudSync } from "./services/sectlCloudSync"
+import { sectlAuth } from "./services/sectlAuth"
 
 const DEFAULT_MOBILE_BOTTOM_NAV_ITEMS: MobileNavKey[] = MOBILE_NAV_ITEMS.map((item) => item.key)
 const DEFAULT_MOBILE_BOTTOM_PRIMARY_KEYS: MobileNavKey[] = DEFAULT_MOBILE_BOTTOM_NAV_ITEMS.slice(
@@ -389,6 +391,27 @@ function MainContent(): React.JSX.Element {
       if (permission !== "admin") return
       try {
         syncCheckingRef.current = true
+
+        const settingsRes = await api.getAllSettings()
+        const syncMethod = settingsRes?.success ? settingsRes.data?.sync_method : null
+
+        if (syncMethod === "sectl_cloud") {
+          if (!sectlAuth.isAuthenticated()) return
+          const status = sectlCloudSync.getStatus()
+          if (!status.is_configured || status.is_syncing) return
+
+          const now = Date.now()
+          const recentLocal = now - lastLocalMutationAtRef.current < 15000
+          const direction = recentLocal ? "push" : "bidirectional"
+          const result = await sectlCloudSync.fullSync(direction)
+          if (result.success) {
+            window.dispatchEvent(
+              new CustomEvent("ss:data-updated", { detail: { category: "all", source: "sync" } })
+            )
+          }
+          return
+        }
+
         const statusRes = await api.dbGetStatus()
         if (
           !statusRes?.success ||