feat(models): 期1 模特库地基 — Model 顶级实体 + 模特库页 + 审核范围扩展

后端:
- 新增 Model(模特)团队级实体:形象图+三视图+声线(声线尾期),官方模板标签,软删
- Asset.Category 枚举一次加全(model_portrait/tri_view/voice/model_tryon/platform_kit/free_create/storyboard),逐期接线
- 送审范围 person → REVIEW_CATEGORIES{person,tri_view,storyboard}(review.py + adminpanel 队列),图片趴不送审;当前行为不变(forward-compat)
- /api/models/ ModelLibraryViewSet:本团队∪官方模板、官方/我的 tab、真人上传、软删(官方不可删)、跨团队资产引用防越权
- backfill_models 命令把历史成套模特(kind=model + 项目流命名配对)归集成 Model,dry-run 默认

前端:
- 左菜单新增「模特库」顶级入口(person 图标)+ 路由 /models
- 模特库页:全部/官方模板/我的模特 tab + 真人上传 + 模特卡(形象图+三视图缩略+官方标签),仅用 design token

测试:assets 10/10 绿;tsc+build 全绿;无头走查 0 console error(全部5/官方3/我的2,官方标签达标)
基线既有 7 失败(ai/projects provider mock 漂移)零新增

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/backend/apps/adminpanel/views.py

@@ -289,9 +289,9 @@ _REVIEW_STATUSES = {"", "processing", "active", "failed"}
 @api_view(["GET"])
 @permission_classes([IsPlatformAdmin])
 def admin_asset_reviews(request):
-    """跨团队真人(person)资产审核队列。?review_status=none|processing|active|failed 过滤(none=未送审)。"""
+    """跨团队送审资产审核队列(角色定妆照/三视图/分镜图)。?review_status=none|processing|active|failed 过滤(none=未送审)。"""
     qs = (
-        Asset.objects.filter(category=Asset.Category.PERSON, is_deleted=False)
+        Asset.objects.filter(category__in=Asset.REVIEW_CATEGORIES, is_deleted=False)
         .select_related("team")
         .prefetch_related("files")
         .order_by("-created_at")
@@ -314,7 +314,7 @@ def admin_asset_reviews(request):
 def admin_asset_reviews_submit(request):
     """批量送审(也用于失败重试):对给定 person 资产逐个 submit_asset_for_review。"""
     ids = request.data.get("asset_ids") or []
-    assets = list(Asset.objects.filter(id__in=ids, category=Asset.Category.PERSON, is_deleted=False))
+    assets = list(Asset.objects.filter(id__in=ids, category__in=Asset.REVIEW_CATEGORIES, is_deleted=False))
     for asset in assets:
         submit_asset_for_review(asset)
     statuses = {str(a.id): a.review_status for a in Asset.objects.filter(id__in=ids)}
@@ -333,7 +333,7 @@ def admin_asset_reviews_submit(request):
 def admin_asset_reviews_poll(request):
     """轮询审核中(processing)资产的最新状态。给 asset_ids 则只轮询这些,否则轮询全平台 processing。"""
     ids = request.data.get("asset_ids")
-    qs = Asset.objects.filter(category=Asset.Category.PERSON, review_status="processing", is_deleted=False)
+    qs = Asset.objects.filter(category__in=Asset.REVIEW_CATEGORIES, review_status="processing", is_deleted=False)
     if ids:
         qs = qs.filter(id__in=ids)
     statuses = {}