feat(library): 资产库重做为「成品库」— 图片成品三类 + 视频成品按项目素材包

定义:资产 = 平台产出的成品。原料(商品/模特)归各自的库、半成品(角色/三视图/场景/分镜)归项目,
资产库只装成品 —— tab 从 9 个收成 5 个。

- 后端 /api/assets/video-packs/:视频成品按项目素材包(与「导出全部」同源,取 VideoSegment.adopted_version
  真实视频资产,给 TOS 直链 url 供 <video> 播放/取首帧);summary 改只数成品(tryon/kits/creations/others)
- 资产库 _tab_q 加 others(我的上传+未归类兜底);角色/场景/商品图/素材 tab 移除(各回各家)
- 前端 library:tab→模特上身图/平台套图/自由创作/视频成品/其他;视频成品=项目包卡(<video>首帧封面)
  → 点开弹窗看该项目所有片段(可播);图片成品/其他复用原网格
- 单测 VideoPacksTests:按项目分组 + 软删片段排除

验收:后端单测绿(基线 4 失败零新增);tsc+build 绿;无头 0 报错(5 tab + 视频包弹窗 3 段)
注:图片成品「按生成批次成组」待图片趴有真实数据时接线(当前 demo 已清空)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/backend/apps/assets/tests.py

@@ -93,8 +93,8 @@ class AssetSoftDeleteTests(TestCase):
         self.user, self.team = _mk_team("usd", "TeamSD")
         self.client = APIClient()
         self.client.force_authenticate(self.user)
-        self.live = Asset.objects.create(team=self.team, name="留存图", asset_type="image", source="ai_generated", category=Asset.Category.PERSON)
-        self.dead = Asset.objects.create(team=self.team, name="废图", asset_type="image", source="ai_generated", category=Asset.Category.PERSON, is_deleted=True)
+        self.live = Asset.objects.create(team=self.team, name="留存图", asset_type="image", source="ai_generated", category=Asset.Category.MODEL_TRYON)
+        self.dead = Asset.objects.create(team=self.team, name="废图", asset_type="image", source="ai_generated", category=Asset.Category.MODEL_TRYON, is_deleted=True)
 
     def test_list_excludes_soft_deleted(self):
         ids = {a["id"] for a in self.client.get("/api/assets/?page_size=50").json()["results"]}
@@ -102,7 +102,43 @@ class AssetSoftDeleteTests(TestCase):
         self.assertNotIn(str(self.dead.id), ids)
 
     def test_summary_excludes_soft_deleted(self):
-        self.assertEqual(self.client.get("/api/assets/summary/").json()["people"], 1)
+        self.assertEqual(self.client.get("/api/assets/summary/").json()["tryon"], 1)
+
+
+class VideoPacksTests(TestCase):
+    """视频成品按项目素材包分组(与导出同源:取 VideoSegment.adopted_version 的真实视频资产)。"""
+
+    def setUp(self):
+        from apps.products.models import Product
+        from apps.projects.models import Project, VideoSegment, VideoSegmentVersion
+        from .models import AssetFile
+
+        self.user, self.team = _mk_team("uvp", "TeamVP")
+        self.client = APIClient()
+        self.client.force_authenticate(self.user)
+        self.product = Product.objects.create(team=self.team, created_by=self.user, title="P")
+        self.proj = Project.objects.create(team=self.team, name="项目甲", product=self.product, created_by=self.user)
+        self.assets = []
+        for i in range(2):
+            a = Asset.objects.create(team=self.team, name=f"clip{i}", asset_type="video", source="ai_generated", category=Asset.Category.VIDEO_CLIP)
+            AssetFile.objects.create(asset=a, object_key=f"k{i}.mp4", bucket="b", content_type="video/mp4", is_primary=True)
+            seg = VideoSegment.objects.create(project=self.proj, sort_order=i)
+            ver = VideoSegmentVersion.objects.create(video_segment=seg, asset=a, is_adopted=True)
+            seg.adopted_version = ver
+            seg.save(update_fields=["adopted_version"])
+            self.assets.append(a)
+
+    def test_packs_grouped_by_project(self):
+        data = self.client.get("/api/assets/video-packs/").json()
+        self.assertEqual(len(data), 1)
+        self.assertEqual(data[0]["project_name"], "项目甲")
+        self.assertEqual(len(data[0]["clips"]), 2)
+        self.assertIn("url", data[0]["clips"][0])
+
+    def test_soft_deleted_clip_excluded(self):
+        Asset.objects.filter(id=self.assets[0].id).update(is_deleted=True)
+        data = self.client.get("/api/assets/video-packs/").json()
+        self.assertEqual(len(data[0]["clips"]), 1)
 
 
 class ReviewScopeTests(TestCase):