refactor: 移动 CategoryInferenceService 到 product-category 模块，修复循环依赖

- 移动 category-inference.service.ts 从 lead/ 到 product-category/
- 修复所有 import 路径
- InquiryPage 品类筛选改为动态 API 加载

apps/api/src/lead/lead.service.ts

@@ -2,7 +2,7 @@ import { Injectable, NotFoundException, Logger, ServiceUnavailableException } fr
 import { PrismaService } from '../prisma/prisma.service'
 import { IntegrationService } from '../integration/integration.service'
 import { ProductCategoryService } from '../product-category/product-category.service'
-import { CategoryInferenceService } from './category-inference.service'
+import { CategoryInferenceService } from '../product-category/category-inference.service'
 
 @Injectable()
 export class LeadService {

apps/api/src/product-category/product-category.module.ts

@@ -2,7 +2,7 @@ import { Module } from '@nestjs/common'
 import { PrismaModule } from '../prisma/prisma.module'
 import { ProductCategoryService } from './product-category.service'
 import { ProductCategoryController } from './product-category.controller'
-import { CategoryInferenceService } from '../lead/category-inference.service'
+import { CategoryInferenceService } from './category-inference.service'
 
 @Module({
   imports: [PrismaModule],

apps/web/src/components/InquiryPage.tsx

@@ -59,7 +59,6 @@ function mapLead(raw: any): Lead {
 
 const STATUS_OPTIONS = ['全部状态', '待复核', '待跟进', '跟进中', '已转询价', '已转协同', '已成交', '无效线索']
 const LEVEL_OPTIONS = ['全部级别', 'S级', 'A级', 'B级', 'C级', 'D级']
-const CAT_OPTIONS = ['全部品类', '防火门', '配电箱', '电线电缆', '阀门', '钢材', '涂料', '混凝土', '变压器', '水泵', '风机', '管材', '开关', '灯具', '仪表', '电机']
 const SOURCE_OPTIONS = ['全部来源', '中电建', '新矿集团', '中核集团']
 const PERSON_OPTIONS = ['全部人员', '郑钊', '赵主任', '运营管理员', '未分配']
 
@@ -115,6 +114,7 @@ export default function InquiryPage({ onLeadDetail }: { onLeadDetail?: (id: stri
   const [fStatus, setFStatus] = useState('全部状态')
   const [fLevel, setFLevel] = useState('全部级别')
   const [fCat, setFCat] = useState('全部品类')
+  const [catOptions, setCatOptions] = useState<string[]>(['全部品类'])
   const [fSource, setFSource] = useState('全部来源')
   const [fPerson, setFPerson] = useState('全部人员')
 
@@ -145,6 +145,12 @@ export default function InquiryPage({ onLeadDetail }: { onLeadDetail?: (id: stri
     setLoading(false)
   }, [])
 
+  useEffect(() => {
+    fetch(`${API_BASE}/api/categories`).then(r => r.json()).then((data: any[]) => {
+      setCatOptions(['全部品类', ...data.map((c: any) => c.name)])
+    }).catch(() => {})
+  }, [])
+
   useEffect(() => { loadLeads(fStar, fStatus, fLevel, fCat, fSource, fPerson, fTime) }, [loadLeads, fStar, fStatus, fLevel, fCat, fSource, fPerson, fTime])
 
   const refreshLeads = async () => {
@@ -396,7 +402,7 @@ export default function InquiryPage({ onLeadDetail }: { onLeadDetail?: (id: stri
             { label: '公告日期', value: fTime, set: setFTime, opts: ['全部日期', '今天', '昨天', '本周', '本月'] },
             { label: '星级', value: fStar, set: setFStar, opts: ['全部星级', '5星', '4星', '3星', '2星及以下'] },
             { label: '甲方级别', value: fLevel, set: setFLevel, opts: LEVEL_OPTIONS },
-            { label: '品类', value: fCat, set: setFCat, opts: CAT_OPTIONS },
+            { label: '品类', value: fCat, set: setFCat, opts: catOptions },
             { label: '来源平台', value: fSource, set: setFSource, opts: SOURCE_OPTIONS },
             { label: '负责人', value: fPerson, set: setFPerson, opts: PERSON_OPTIONS },
           ].map(f => (