fix(mining-wallet-service): move share-pool-balance route before :type param route

NestJS routes are matched in order, so the parameterized :type route
was capturing 'share-pool-balance' before it could reach the public
endpoint, causing 401 errors.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/mining-wallet-service/src/api/controllers/pool-account.controller.ts

@@ -34,6 +34,14 @@ export class PoolAccountController {
     return this.poolAccountService.findAll();
   }
 
+  @Get('share-pool-balance')
+  @Public()
+  @ApiOperation({ summary: '获取积分股池总余量' })
+  @ApiResponse({ status: 200, description: '积分股池A+B的总余量' })
+  async getSharePoolTotalBalance() {
+    return this.poolAccountService.getSharePoolTotalBalance();
+  }
+
   @Get('stats')
   @AdminOnly()
   @ApiOperation({ summary: '获取池账户统计' })
@@ -104,14 +112,6 @@ export class PoolAccountController {
     });
   }
 
-  @Get('share-pool-balance')
-  @Public()
-  @ApiOperation({ summary: '获取积分股池总余量' })
-  @ApiResponse({ status: 200, description: '积分股池A+B的总余量' })
-  async getSharePoolTotalBalance() {
-    return this.poolAccountService.getSharePoolTotalBalance();
-  }
-
   @Post('burn')
   @AdminOnly()
   @ApiOperation({ summary: '销毁到黑洞池' })