feat(product): 实现产品需求管理模块（后端 + 前端）

后端：Product Module（CRUD）、Requirement Module（CRUD + 状态机流转）、PrismaService
前端：产品列表页、产品详情页（含需求池 Tab）、Zustand Store、API 封装

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/server/package.json

@@ -16,13 +16,16 @@
     "db:studio": "prisma studio"
   },
   "dependencies": {
+    "@ftb/shared": "workspace:*",
     "@nestjs/common": "^10.0.0",
     "@nestjs/core": "^10.0.0",
+    "@nestjs/mapped-types": "^2.1.1",
     "@nestjs/platform-express": "^10.0.0",
     "@prisma/client": "^5.15.0",
+    "class-transformer": "^0.5.1",
+    "class-validator": "^0.15.1",
     "reflect-metadata": "^0.2.0",
-    "rxjs": "^7.8.0",
-    "@ftb/shared": "workspace:*"
+    "rxjs": "^7.8.0"
   },
   "devDependencies": {
     "@nestjs/cli": "^10.0.0",