P2-1: remove dead cost-control module (3 files)

P2-2: switch TypeORM to autoLoadEntities: true

Remove unused vision-pipeline-cost-aware.service.ts,
cost-control.service.ts and its orphan module.
Switch explicit entities[] list to autoLoadEntities.

server/src/app.module.ts

@@ -31,34 +31,11 @@ import { ImportTaskModule } from './import-task/import-task.module';
 import { AssessmentModule } from './assessment/assessment.module';
 import { I18nMiddleware } from './i18n/i18n.middleware';
 import { TenantMiddleware } from './tenant/tenant.middleware';
-import { User } from './user/user.entity';
-import { UserSetting } from './user/user-setting.entity';
-import { ModelConfig } from './model-config/model-config.entity';
-import { KnowledgeBase } from './knowledge-base/knowledge-base.entity';
-import { KnowledgeGroup } from './knowledge-group/knowledge-group.entity';
-import { SearchHistory } from './search-history/search-history.entity';
-import { ChatMessage } from './search-history/chat-message.entity';
-import { Note } from './note/note.entity';
-import { NoteCategory } from './note/note-category.entity';
-import { PodcastEpisode } from './podcasts/entities/podcast-episode.entity';
-import { ImportTask } from './import-task/import-task.entity';
-import { AssessmentSession } from './assessment/entities/assessment-session.entity';
-import { AssessmentQuestion } from './assessment/entities/assessment-question.entity';
-import { AssessmentAnswer } from './assessment/entities/assessment-answer.entity';
-import { AssessmentTemplate } from './assessment/entities/assessment-template.entity';
-import { QuestionBank } from './assessment/entities/question-bank.entity';
-import { QuestionBankItem } from './assessment/entities/question-bank-item.entity';
-import { Tenant } from './tenant/tenant.entity';
-import { TenantSetting } from './tenant/tenant-setting.entity';
-import { ApiKey } from './auth/entities/api-key.entity';
-import { TenantMember } from './tenant/tenant-member.entity';
+
 import { TenantModule } from './tenant/tenant.module';
 import { SuperAdminModule } from './super-admin/super-admin.module';
 import { AdminModule } from './admin/admin.module';
 import { FeishuModule } from './feishu/feishu.module';
-import { FeishuBot } from './feishu/entities/feishu-bot.entity';
-import { FeishuAssessmentSession } from './feishu/entities/feishu-assessment-session.entity';
-import { AssessmentCertificate } from './assessment/entities/assessment-certificate.entity';
 
 @Module({
   imports: [
@@ -77,33 +54,8 @@ import { AssessmentCertificate } from './assessment/entities/assessment-certific
       useFactory: (configService: ConfigService) => ({
         type: 'better-sqlite3',
         database: configService.get<string>('DATABASE_PATH'),
-        entities: [
-          User,
-          UserSetting,
-          ModelConfig,
-          KnowledgeBase,
-          KnowledgeGroup,
-          SearchHistory,
-          ChatMessage,
-          Note,
-          NoteCategory,
-          PodcastEpisode,
-          ImportTask,
-          AssessmentSession,
-          AssessmentQuestion,
-          AssessmentAnswer,
-          AssessmentTemplate,
-          QuestionBank,
-          QuestionBankItem,
-          Tenant,
-          TenantSetting,
-          TenantMember,
-          ApiKey,
-          FeishuBot,
-          FeishuAssessmentSession,
-          AssessmentCertificate,
-        ],
-        synchronize: true, // Auto-create database schema. Disable in production.
+        autoLoadEntities: true,
+        synchronize: true,
       }),
     }),
     AuthModule,