fix(identity-service): 添加全局异常过滤器日志记录以便调试

backend/services/identity-service/src/shared/filters/global-exception.filter.ts

@@ -1,6 +1,6 @@
 import {
   ExceptionFilter, Catch, ArgumentsHost, HttpException, HttpStatus,
-  Injectable, NestInterceptor, ExecutionContext, CallHandler,
+  Injectable, NestInterceptor, ExecutionContext, CallHandler, Logger,
 } from '@nestjs/common';
 import { Response } from 'express';
 import { Observable } from 'rxjs';
@@ -9,9 +9,12 @@ import { DomainError, ApplicationError } from '@/shared/exceptions/domain.except
 
 @Catch()
 export class GlobalExceptionFilter implements ExceptionFilter {
+  private readonly logger = new Logger(GlobalExceptionFilter.name);
+
   catch(exception: unknown, host: ArgumentsHost) {
     const ctx = host.switchToHttp();
     const response = ctx.getResponse<Response>();
+    const request = ctx.getRequest();
 
     let status = HttpStatus.INTERNAL_SERVER_ERROR;
     let message = '服务器内部错误';
@@ -37,6 +40,22 @@ export class GlobalExceptionFilter implements ExceptionFilter {
       message = exception.message;
     }
 
+    // 记录错误日志
+    const errorLog = {
+      method: request.method,
+      url: request.url,
+      status,
+      message,
+      code,
+      stack: exception instanceof Error ? exception.stack : undefined,
+    };
+
+    if (status >= 500) {
+      this.logger.error(`Internal server error: ${JSON.stringify(errorLog)}`);
+    } else {
+      this.logger.warn(`Client error: ${JSON.stringify(errorLog)}`);
+    }
+
     response.status(status).json({
       success: false,
       code,