feat(ui06): B3c form batch — full-page create/edit form + assets tab

- 新增 /albums/form/create 与 /albums/form/:albumId 整页表单路由（隐藏路由，父菜单高亮）
- 编辑模式资料/访问页签（访问=开关行卡：标题+说明+开关）；创建模式契约约束下载开关+解释提示
- 校验/提交逻辑与原对话框一致（契约镜像校验；translations 全量替换；创建仅 download 开关）
- 保存成功跳相册详情；manage/detail 两处入口改路由跳转，删除 AlbumFormDialog
- banner 上传收进详情「品牌资产」独立页签（15）
- e2e 适配：整页表单流程（form-page/goback/访问页签）、详情锚点改 summary、banner 页签
- typecheck/lint/vitest/build 全绿

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

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

@@ -240,7 +240,9 @@
     "albums": {
       "title": "Albums",
       "manage": "Album Management",
-      "detail": "Album Detail"
+      "detail": "Album Detail",
+      "formCreate": "Create album",
+      "formEdit": "Edit album"
     },
     "group": {
       "workspace": "Workspace",
@@ -345,7 +347,18 @@
         "titleRequired": "Title is required",
         "titleRequiredWithFields": "Title is required when other fields of this locale are filled",
         "endAtNotAfterStartAt": "End time must be later than start time"
-      }
+      },
+      "pageSubtitle": "Fill both languages by tab; default locale is required and all languages are preserved on save.",
+      "basicCard": "Basics",
+      "switchesCard": "Download switches",
+      "createSwitchesHint": "Upload & public switches are adjusted after creation via Edit · Access (create contract includes download switches only).",
+      "tabDetails": "Details",
+      "tabAccess": "Access",
+      "accessCard": "Access & download",
+      "switchUploadDesc": "Staff can upload photos in the app when on",
+      "switchPublicDesc": "Viewers can browse published photos via link when on",
+      "switchDownloadDesc": "Allow viewers to download watermarked variants",
+      "switchOriginalDesc": "Allow original download (use with care)"
     },
     "detail": {
       "back": "Back to List",
@@ -371,7 +384,8 @@
       "statsNotSynced": "Not synced yet",
       "fieldOwnerId": "Owner",
       "subtitle": "Album workspace · Manage the moments that matter",
-      "share": "Share album"
+      "share": "Share album",
+      "tabAssets": "Branding assets"
     },
     "banner": {
       "kind": "Asset Kind",

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

@@ -240,7 +240,9 @@
     "albums": {
       "title": "相册管理",
       "manage": "相册管理",
-      "detail": "相册详情"
+      "detail": "相册详情",
+      "formCreate": "新建相册",
+      "formEdit": "编辑相册"
     },
     "group": {
       "workspace": "工作空间",
@@ -345,7 +347,18 @@
         "titleRequired": "标题必填",
         "titleRequiredWithFields": "该语言已填写其他字段，标题也必填",
         "endAtNotAfterStartAt": "结束时间必须晚于开始时间"
-      }
+      },
+      "pageSubtitle": "双语内容按语言分页填写；默认语言必填，保存时保留全部语言。",
+      "basicCard": "基础资料",
+      "switchesCard": "下载开关",
+      "createSwitchesHint": "上传与公开访问开关在创建后经「编辑 · 访问」调整（创建契约仅含下载开关）。",
+      "tabDetails": "资料",
+      "tabAccess": "访问",
+      "accessCard": "访问与下载",
+      "switchUploadDesc": "开启后工作人员可在 App 上传照片",
+      "switchPublicDesc": "开启后观众可通过链接浏览已公开照片",
+      "switchDownloadDesc": "允许观众下载带水印变体",
+      "switchOriginalDesc": "允许下载原图（谨慎开启）"
     },
     "detail": {
       "back": "返回列表",
@@ -371,7 +384,8 @@
       "statsNotSynced": "尚无回传",
       "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"
+      "share": "分享相册",
+      "tabAssets": "品牌资产"
     },
     "banner": {
       "kind": "资产类型",