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/frontend/src/routes/route-config.ts

@@ -7,6 +7,7 @@ import {
   MessageSquare,
   Package,
   Settings,
+  UserRound,
   Users,
   Wallet,
   WandSparkles
@@ -17,6 +18,7 @@ export type Page =
   | "products"
   | "productDetail"
   | "productCreateUpload"
+  | "models"
   | "projects"
   | "projectWizard"
   | "pipeline"
@@ -57,6 +59,7 @@ export type NavItem = { page: Page; label: string; icon: typeof Home; badge?: st
 export const mainNav: NavItem[] = [
   { page: "dashboard", label: "工作台", icon: Home },
   { page: "products", label: "商品库", icon: Package },
+  { page: "models", label: "模特库", icon: UserRound },
   { page: "projects", label: "视频项目", icon: FolderKanban },
   { page: "pipeline", label: "生产管线", icon: WandSparkles },
   { page: "library", label: "资产库", icon: Library },
@@ -76,6 +79,7 @@ export const routeLabels: Record<Page, string> = {
   products: "商品库",
   productDetail: "商品详情",
   productCreateUpload: "上传创建商品",
+  models: "模特库",
   projects: "视频项目",
   projectWizard: "新建视频项目",
   pipeline: "生产管线",
@@ -129,6 +133,7 @@ export function resolveRoute(): ResolvedRoute {
   if (path.startsWith("/products/")) {
     return { page: "productDetail", authMode: "login", productId: decodeURIComponent(path.slice("/products/".length)), hash };
   }
+  if (path === "/models") return { page: "models", authMode: "login", hash };
   if (path === "/projects") return { page: "projects", authMode: "login", hash };
   if (path === "/projects/new") return { page: "projectWizard", authMode: "login", hash };
   if (path === "/pipeline") {
@@ -163,6 +168,8 @@ export function pathForPage(page: Page, options: NavigateOptions = {}) {
       return "/products/new";
     case "productDetail":
       return options.productId ? `/products/${encodeURIComponent(options.productId)}` : "/products";
+    case "models":
+      return "/models";
     case "projects":
       return "/projects";
     case "projectWizard":