refactor: 删除板块资金流向，题材板块功能更全

- 删除前端 /sectors 页面、首页入口按钮、stock-api 板块类型与 fetchSectors
- 删除后端 /api/sectors 路由，main.py 移除注册
- eastmoney.py 移除板块数据段(_fetch_push2/_fetch_akshare/UT令牌管理)，
  清理重复 import 与无用 datetime 子导入
- mootdx.py 移除板块降级方案(fetch_sector_list)
- routeTree.gen.ts 由 build 自动重新生成，移除 sectors 路由

题材热点/热点穿透/核心股已覆盖板块能力，功能更全，板块资金流向不再需要

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

src/routeTree.gen.ts

@@ -10,7 +10,6 @@
 
 import { Route as rootRouteImport } from './routes/__root'
 import { Route as ThemesRouteImport } from './routes/themes'
-import { Route as SectorsRouteImport } from './routes/sectors'
 import { Route as HotMapRouteImport } from './routes/hot-map'
 import { Route as CoreStocksRouteImport } from './routes/core-stocks'
 import { Route as IndexRouteImport } from './routes/index'
@@ -23,11 +22,6 @@ const ThemesRoute = ThemesRouteImport.update({
   path: '/themes',
   getParentRoute: () => rootRouteImport,
 } as any)
-const SectorsRoute = SectorsRouteImport.update({
-  id: '/sectors',
-  path: '/sectors',
-  getParentRoute: () => rootRouteImport,
-} as any)
 const HotMapRoute = HotMapRouteImport.update({
   id: '/hot-map',
   path: '/hot-map',
@@ -63,7 +57,6 @@ export interface FileRoutesByFullPath {
   '/': typeof IndexRoute
   '/core-stocks': typeof CoreStocksRoute
   '/hot-map': typeof HotMapRoute
-  '/sectors': typeof SectorsRoute
   '/themes': typeof ThemesRoute
   '/share/$code': typeof ShareCodeRoute
   '/stock/$code': typeof StockCodeRoute
@@ -73,7 +66,6 @@ export interface FileRoutesByTo {
   '/': typeof IndexRoute
   '/core-stocks': typeof CoreStocksRoute
   '/hot-map': typeof HotMapRoute
-  '/sectors': typeof SectorsRoute
   '/themes': typeof ThemesRoute
   '/share/$code': typeof ShareCodeRoute
   '/stock/$code': typeof StockCodeRoute
@@ -84,7 +76,6 @@ export interface FileRoutesById {
   '/': typeof IndexRoute
   '/core-stocks': typeof CoreStocksRoute
   '/hot-map': typeof HotMapRoute
-  '/sectors': typeof SectorsRoute
   '/themes': typeof ThemesRoute
   '/share/$code': typeof ShareCodeRoute
   '/stock/$code': typeof StockCodeRoute
@@ -96,7 +87,6 @@ export interface FileRouteTypes {
     | '/'
     | '/core-stocks'
     | '/hot-map'
-    | '/sectors'
     | '/themes'
     | '/share/$code'
     | '/stock/$code'
@@ -106,7 +96,6 @@ export interface FileRouteTypes {
     | '/'
     | '/core-stocks'
     | '/hot-map'
-    | '/sectors'
     | '/themes'
     | '/share/$code'
     | '/stock/$code'
@@ -116,7 +105,6 @@ export interface FileRouteTypes {
     | '/'
     | '/core-stocks'
     | '/hot-map'
-    | '/sectors'
     | '/themes'
     | '/share/$code'
     | '/stock/$code'
@@ -127,7 +115,6 @@ export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute
   CoreStocksRoute: typeof CoreStocksRoute
   HotMapRoute: typeof HotMapRoute
-  SectorsRoute: typeof SectorsRoute
   ThemesRoute: typeof ThemesRoute
   ShareCodeRoute: typeof ShareCodeRoute
   StockCodeRoute: typeof StockCodeRoute
@@ -143,13 +130,6 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof ThemesRouteImport
       parentRoute: typeof rootRouteImport
     }
-    '/sectors': {
-      id: '/sectors'
-      path: '/sectors'
-      fullPath: '/sectors'
-      preLoaderRoute: typeof SectorsRouteImport
-      parentRoute: typeof rootRouteImport
-    }
     '/hot-map': {
       id: '/hot-map'
       path: '/hot-map'
@@ -199,7 +179,6 @@ const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
   CoreStocksRoute: CoreStocksRoute,
   HotMapRoute: HotMapRoute,
-  SectorsRoute: SectorsRoute,
   ThemesRoute: ThemesRoute,
   ShareCodeRoute: ShareCodeRoute,
   StockCodeRoute: StockCodeRoute,