feat(ui06): B2 shared components + B3a core pages — album cards, photo grid, viewer, summary header

- 类型补齐契约字段：Summary.cover / AdminPhoto.preview（SignedUrl；服务端已返回，B0 核对）
- AlbumCoverCard：封面卡（公开/状态/上传 pill，无封面中性占位，不显示 owner 名）
- 相册列表：默认封面卡片网格（3列/1700+4列）+ 表格切换 + 已加载内搜索 + 公开状态筛选 + 摘要行
- AlbumSummaryHeader：300×144 封面 + 两列紧凑资料 + 高级折叠（ownerId/统计时间收敛）
- 详情页壳：页头（编辑/分享固定主操作）替换 ElDescriptions 大区；banner 区 B3c 收纳
- PhotoGrid + PhotoPreviewDialog：照片网格默认（preview.thumb 签名 URL）+ 深色大图（browse URL、
  行内隐藏/恢复/软删除复用表格状态机）；网格勾选与表格 selection 合并批量目标
- e2e 适配默认网格视图（albums/governance 断言前切表格）；batchHide fixture 补 preview
- typecheck/lint/vitest 87 项全绿

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

apps/admin/src/locales/langs/zh.json

@@ -304,7 +304,17 @@
       "actionEdit": "编辑",
       "actionMembers": "成员",
       "actionDetail": "详情",
-      "endAtUndecided": "未定"
+      "endAtUndecided": "未定",
+      "subtitle": "以活动为中心，管理相册、团队和每一张照片。",
+      "searchPlaceholder": "搜索当前已加载相册",
+      "statusAll": "全部公开状态",
+      "statusPublicOnly": "公开",
+      "statusPrivateOnly": "未公开",
+      "viewGrid": "卡片视图",
+      "viewTable": "表格视图",
+      "loadedCount": "已加载 {n} 个相册",
+      "cursorNote": "按创建时间排序 · 游标加载",
+      "emptyFiltered": "没有符合筛选条件的相册"
     },
     "form": {
       "createTitle": "新建相册",
@@ -359,7 +369,9 @@
       "fieldUpdatedAt": "更新时间",
       "fieldStatsSyncedAt": "统计同步时间",
       "statsNotSynced": "尚无回传",
-      "fieldOwnerId": "负责人"
+      "fieldOwnerId": "负责人",
+      "subtitle": "相册工作区 · 管理活动中的精彩瞬间",
+      "share": "分享相册"
     },
     "banner": {
       "kind": "资产类型",
@@ -457,7 +469,10 @@
       "batchResultAllOk": "批量隐藏完成：成功 {ok} 张",
       "batchFailuresTitle": "失败明细（逐项原因）",
       "batchColPhoto": "照片 ID",
-      "batchColReason": "原因"
+      "batchColReason": "原因",
+      "view": "详情",
+      "selectedCount": "{n} 张已选",
+      "onlyPublicSelectable": "仅已公开照片可批量选择"
     },
     "transfer": {
       "entry": "负责人交接",
@@ -514,6 +529,31 @@
       "hint": "观众经此链接访问相册公开页；关闭「公开可见」开关后链接失效。",
       "qrTitle": "扫码打开",
       "publicOffHint": "该相册已关闭「公开可见」，观众端链接当前不可访问"
+    },
+    "card": {
+      "public": "公开",
+      "private": "未公开",
+      "active": "进行中",
+      "offline": "已下线",
+      "uploadsOn": "可上传",
+      "uploadsOff": "上传关闭"
+    },
+    "summary": {
+      "eventTimezone": "活动时间 · {tz}",
+      "venueUnset": "未设置地点",
+      "venueLabel": "活动地点",
+      "publicOn": "允许公开访问",
+      "publicOff": "公开访问关闭",
+      "uploadOn": "工作人员上传已开启",
+      "uploadOff": "工作人员上传已关闭",
+      "advanced": "高级信息"
+    },
+    "photosGrid": {
+      "openAria": "查看照片",
+      "selectAria": "选择照片",
+      "noPreview": "无预览",
+      "uploader": "上传者",
+      "filterAll": "全部照片"
     }
   },
   "usage": {