feat(mobile): upload queue ui and continuous capture page

Task 9 (P3 plan): queue tab replaces the stub, continuous capture page
enqueues per shot, album detail gains an upload FAB, and the upload
engine lifecycle is now bound to the login session.

- Engine scope: session account drives UploadEngine start/stop; wired
  from app boot, login success, logout, and 401 eviction. Tasks stay in
  the store across logout (accountId hard isolation).
- Queue tab: album x state x time filter bar, task rows with thumbnail,
  state chip, localized error copy, attempt count, per-row progress via
  a broadcast progress hub, state-dependent actions (re-pick retry,
  retryNow, cancel, delete), batch retry bar, 200ms-debounced live
  refresh from drift table updates.
- Capture page: camera preview via injected CaptureSource, one enqueue
  per shutter press, persistent album/category/badges overlay with a
  switch-only-affects-new-shots hint, gallery multi-pick, exit confirm
  while uploads are pending, permission-denied and init-failure views.
- POST_NOTIFICATIONS runtime permission via a small MethodChannel
  (photolive/permissions) + PermissionPlugin.kt: single runtime
  permission need, avoids permission_handler dependency; requested once
  on first enqueue, silent degradation when denied or unavailable.
- Album detail FAB: capture-and-upload / pick-from-gallery sheet.
- l10n: ~50 new keys in zh/en arbs; tests: +45 (filter matrix, engine
  scope lifecycle, permission gate, queue tab, capture page, FAB entry);
  existing page tests updated to inject session/task-store fakes.

Co-Authored-By: Claude Code <noreply@anthropic.com>

apps/mobile/lib/l10n/app_zh.arb

@@ -117,5 +117,60 @@
   "uploadStateConfirmed": "已确认",
   "uploadStateCancelled": "已取消",
   "uploadStateExpired": "已过期",
-  "thisDevice": "本设备"
+  "thisDevice": "本设备",
+  "queueAlbumFilterAll": "全部相册",
+  "queueStateAll": "全部",
+  "queueStatePreparing": "准备中",
+  "queueStateQueued": "待传",
+  "queueStateUploading": "上传中",
+  "queueStateWaitingNetwork": "等待网络",
+  "queueStateFailed": "失败",
+  "queueStateCompleted": "已完成",
+  "queueTimeAll": "全部时间",
+  "queueTimeToday": "今天",
+  "queueTimeLast7Days": "近7天",
+  "queueTimeLast30Days": "近30天",
+  "queueEmpty": "暂无上传任务",
+  "queueRetryAllFailed": "一键重试全部失败",
+  "queueAttemptCount": "已尝试 {count} 次",
+  "@queueAttemptCount": { "placeholders": { "count": { "type": "int" } } },
+  "taskStatePreparing": "准备中",
+  "taskStatePreparationFailed": "准备失败",
+  "taskStateQueued": "待上传",
+  "taskStateUploading": "上传中",
+  "taskStateUploadedConfirming": "确认中",
+  "taskStateCompleted": "已完成",
+  "taskStateWaitingNetwork": "等待网络",
+  "taskStateRetryableFailed": "上传失败",
+  "taskStateCancelled": "已取消",
+  "errorPrepSourceUnreadable": "无法读取所选图片，请重新选择",
+  "errorPrepUnsupportedType": "仅支持 JPG/PNG/HEIC 图片",
+  "errorPrepTooLarge": "图片超过 50MB 上限",
+  "errorPrepCopyFailed": "保存图片副本失败，请重试",
+  "errorUploadSourceMissing": "源文件已缺失，请重新选择",
+  "errorAlbumUploadDisabled": "相册已关闭上传",
+  "errorUploadSessionConflict": "上传会话冲突，请重试",
+  "errorUploadVerifyFailed": "上传核验失败，将自动重试",
+  "captureTitle": "连拍上传",
+  "captureCategoryDefault": "默认分类",
+  "captureSwitchHint": "切换分类仅影响之后拍摄的照片",
+  "capturePendingBadge": "待传 {count}",
+  "@capturePendingBadge": { "placeholders": { "count": { "type": "int" } } },
+  "captureFailedBadge": "失败 {count}",
+  "@captureFailedBadge": { "placeholders": { "count": { "type": "int" } } },
+  "capturePickFromGallery": "从相册选择",
+  "captureShutter": "拍摄",
+  "captureExitTitle": "退出拍摄？",
+  "captureExitBody": "还有 {count} 张照片未上传，退出后任务将在后台继续。",
+  "@captureExitBody": { "placeholders": { "count": { "type": "int" } } },
+  "captureKeepShooting": "继续拍摄",
+  "captureExitConfirm": "退出",
+  "cameraPermissionDenied": "无法访问相机，请在系统设置中允许相机权限",
+  "cameraInitFailed": "相机初始化失败",
+  "uploadActionCapture": "拍照上传",
+  "uploadActionPick": "从相册选择",
+  "uploadAction": "上传",
+  "uploadEnqueuedCount": "已加入 {count} 张上传队列",
+  "@uploadEnqueuedCount": { "placeholders": { "count": { "type": "int" } } },
+  "uploadPickNone": "未选择照片"
 }