feat(admin-web): surface monitoring platform authorization status

Dashboard and question-detail views now read platform_authorization_status
from the API. Tracking disables collect-now when the account has no
desktop client, no authorized platforms, or the selected platform is
unauthorized, and keeps the six-platform matrix stable; question-detail
replaces tabs and cards with an explicit unavailable notice when the
account is not authorized for monitoring. Adds the shared type and
en/zh strings covering each status.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/admin-web/src/i18n/messages/zh-CN.ts

@@ -351,6 +351,9 @@ const zhCN = {
     collectTodayOnly: "立即采集只支持今天的数据，请切回今天后再操作",
     collectClientChecking: "正在检查当前账号的桌面客户端状态",
     collectClientOnlineRequired: "当前登录账号的桌面客户端未在线，暂时不能立即采集",
+    noDesktopClientCollectReason: "当前账号尚未注册桌面客户端，不能发起采集",
+    noAuthorizedPlatformsCollectReason: "当前账号暂无已授权 AI 平台，不能发起采集",
+    collectPlatformUnauthorized: "当前筛选平台未授权，不能发起采集",
     pluginMode: "插件采样",
     pluginHint: "插件模式下结果受设备在线率影响，低覆盖样本仅供趋势参考。",
     awaitingSnapshot: "等待下一次有效快照",
@@ -393,6 +396,25 @@ const zhCN = {
     noCitationAnalysis: "该平台暂无引用分析",
     noContentCitations: "当前平台暂无内容引用",
     noTaskDebug: "当前条件下暂无异步任务调试数据",
+    noPlatformBreakdown: "当前筛选条件下暂无可展示的平台数据",
+    selectedPlatformUnauthorizedTitle: "当前平台未授权",
+    selectedPlatformUnauthorizedDescription: "该 AI 平台没有当前账号的有效授权记录，请切换到已授权平台或在桌面端完成授权。",
+    noDetailPlatformsTitle: "暂无可展示平台",
+    noDetailPlatformsDescription: "当前筛选条件下没有可展示的 AI 平台数据。",
+    platformAuthorization: {
+      authorized: {
+        title: "AI 平台授权正常",
+        description: "当前账号已有可用于监控采集的 AI 平台授权。",
+      },
+      no_desktop_client: {
+        title: "未检测到桌面客户端",
+        description: "当前账号尚未注册桌面客户端。每日任务会等待有效客户端上线后再下发，仪表盘不会展示为可采集状态。",
+      },
+      no_authorized_platforms: {
+        title: "暂无已授权 AI 平台",
+        description: "当前账号没有已绑定或已授权的 AI 平台。系统不会为未授权平台生成或下发采集任务。",
+      },
+    },
     samples: "次采样",
     citations: "次引用",
     citedArticleMeta: "{count} 篇内容被引用",