Refactor AI config to step-based wizard with DeepSeek defaults

apps/server/src/ai-config/ai-config.controller.ts

@@ -12,7 +12,7 @@ import { RequirePermission } from '../auth/decorators/permission.decorator';
 import { OperationLogsService } from '../operation-logs/operation-logs.service';
 import { extractRequestInfo } from '../common/request-utils';
 import { AiConfigService } from './ai-config.service';
-import { SaveAiConfigDto, TestAiConfigDto } from './dto/ai-config.dto';
+import { SaveAiConfigDto, TestAiConfigDto, FetchModelsDto } from './dto/ai-config.dto';
 
 interface AuthenticatedRequest {
   user?: { id: number; username: string };
@@ -47,7 +47,7 @@ export class AiConfigController {
       action: 'save',
       targetId: config.id,
       targetType: 'AiConfig',
-      detail: `provider=${body.provider} host=${new URL(config.baseUrl).hostname} model=${body.defaultModel ? 'configured' : 'not-set'} enabled=${body.enabled ?? config.enabled}`,
+      detail: `provider=${body.provider} host=${new URL(config.baseUrl).hostname} model=${body.defaultModel ? 'configured' : 'not-set'}`,
       ipAddress,
       userAgent,
     });
@@ -73,6 +73,13 @@ export class AiConfigController {
     return result;
   }
 
+  @Post('models')
+  @RequirePermission('ai:config:read')
+  async fetchModels(@Body() body: FetchModelsDto) {
+    const result = await this.service.fetchModels(body);
+    return result;
+  }
+
   @Post('clear-key')
   @RequirePermission('ai:config:write')
   async clearKey(@Req() req: AuthenticatedRequest) {