refactor: 彻底移除 Sora 视频生成模块（全栈清理）

## 后端变更
- 删除 21 个 sora_*.go 服务文件（service/handler/repository/routes）
- 删除 Sora 相关 migration 文件（046/047/063/090）
- 清理 config 中的 sora_* 配置项和平台常量
- 清理 wire 依赖注入中的 Sora 组件
- 修复 wire_gen.go 语法错误（缺少逗号和闭合括号）
- 移除 go.mod 中的 go-sora2api 依赖
- 更新 ent schema usage_log.go 注释

## 前端变更
- 删除 SoraView、SoraAdminView 及 8 个 Sora 子组件
- 删除 sora API 层和路由配置
- 清理 UserEditModal 中的 Sora 存储配额 UI
- 清理 types/index.ts 中 Sora 相关类型定义
- 清理 stores/app.ts 默认配置
- 清理 i18n 翻译文件 en.ts/zh.ts (~110 行)
- 更新相关测试文件

## 文档更新
- README.md / README_CN.md / README_JA.md: 移除 Sora 状态说明和配置段落
- PROJECT_DIFF.md: 移除 Sora 相关差异描述

## 验证结果
- ✅ Go 编译通过 (go build ./...)
- ✅ TypeScript 类型检查通过 (vue-tsc --noEmit)
- ✅ 后端测试全通过 (0 failures)
- ✅ 前端测试全通过 (59 files, 329 tests, 0 failures)
- ✅ 前端生产构建成功 (23.81s)

backend/cmd/server/wire.go

@@ -105,7 +105,6 @@ func provideCleanup(
 	opsCleanup *service.OpsCleanupService,
 	opsScheduledReport *service.OpsScheduledReportService,
 	opsSystemLogSink *service.OpsSystemLogSink,
-	soraMediaCleanup *service.SoraMediaCleanupService, // 从本地版本合并
 	schedulerSnapshot *service.SchedulerSnapshotService,
 	tokenRefresh *service.TokenRefreshService,
 	accountExpiry *service.AccountExpiryService,
@@ -266,14 +265,7 @@ func provideCleanup(
 					paymentOrderExpiry.Stop()
 				}
 				return nil
-			}},
-			{"SoraMediaCleanupService", func() error {
-				if soraMediaCleanup != nil {
-					soraMediaCleanup.Stop()
-				}
-				return nil
-			}},
-		}
+			}		}
 
 		infraSteps := []cleanupStep{
 			{"Redis", func() error {

backend/cmd/server/wire_gen.go

@@ -218,30 +218,19 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	scheduledTestHandler := admin.NewScheduledTestHandler(scheduledTestService)
 	channelHandler := admin.NewChannelHandler(channelService, billingService)
 	paymentHandler := admin.NewPaymentHandler(paymentService, paymentConfigService)
-	soraGenerationRepository := repository.NewSoraGenerationRepository(db)
-	soraS3Storage := service.NewSoraS3Storage(settingService)
-	soraQuotaService := service.NewSoraQuotaService(settingService)
-	soraGenerationService := service.NewSoraGenerationService(soraGenerationRepository, soraS3Storage, soraQuotaService)
-	soraHandler := admin.NewSoraHandler(soraGenerationService, soraQuotaService, userRepository)
-	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, adminAnnouncementHandler, backupHandler, oAuthHandler, openAIOAuthHandler, geminiOAuthHandler, antigravityOAuthHandler, proxyHandler, adminRedeemHandler, promoHandler, settingHandler, opsHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler, userAttributeHandler, errorPassthroughHandler, tlsFingerprintProfileHandler, adminAPIKeyHandler, scheduledTestHandler, channelHandler, paymentHandler, soraHandler)
+	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, adminAnnouncementHandler, backupHandler, oAuthHandler, openAIOAuthHandler, geminiOAuthHandler, antigravityOAuthHandler, proxyHandler, adminRedeemHandler, promoHandler, settingHandler, opsHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler, userAttributeHandler, errorPassthroughHandler, tlsFingerprintProfileHandler, adminAPIKeyHandler, scheduledTestHandler, channelHandler, paymentHandler)
 	usageRecordWorkerPool := service.NewUsageRecordWorkerPool(configConfig)
 	userMsgQueueCache := repository.NewUserMsgQueueCache(redisClient)
 	userMessageQueueService := service.ProvideUserMessageQueueService(userMsgQueueCache, rpmCache, configConfig)
 	gatewayHandler := handler.NewGatewayHandler(gatewayService, geminiMessagesCompatService, antigravityGatewayService, userService, concurrencyService, billingCacheService, usageService, apiKeyService, usageRecordWorkerPool, errorPassthroughService, userMessageQueueService, configConfig, settingService)
 	openAIGatewayHandler := handler.NewOpenAIGatewayHandler(openAIGatewayService, concurrencyService, billingCacheService, apiKeyService, usageRecordWorkerPool, errorPassthroughService, configConfig)
-	soraAccountRepository := repository.NewSoraAccountRepository(db)
-	soraSDKClient := service.ProvideSoraSDKClient(configConfig, httpUpstream, openAITokenProvider, accountRepository, soraAccountRepository)
-	soraGatewayService := service.NewSoraGatewayService(soraSDKClient, rateLimitService, httpUpstream, configConfig)
-	soraGatewayHandler := handler.NewSoraGatewayHandler(gatewayService, soraGatewayService, concurrencyService, billingCacheService, usageRecordWorkerPool, configConfig)
-	soraMediaStorage := service.ProvideSoraMediaStorage(configConfig)
-	soraClientHandler := handler.NewSoraClientHandler(soraGenerationService, soraQuotaService, soraS3Storage, soraGatewayService, gatewayService, soraMediaStorage, apiKeyService)
 	handlerSettingHandler := handler.ProvideSettingHandler(settingService, buildInfo)
 	totpHandler := handler.NewTotpHandler(totpService)
 	handlerPaymentHandler := handler.NewPaymentHandler(paymentService, paymentConfigService, channelService)
 	paymentWebhookHandler := handler.NewPaymentWebhookHandler(paymentService, registry)
 	idempotencyCoordinator := service.ProvideIdempotencyCoordinator(idempotencyRepository, configConfig)
 	idempotencyCleanupService := service.ProvideIdempotencyCleanupService(idempotencyRepository, configConfig)
-	handlers := handler.ProvideHandlers(authHandler, userHandler, apiKeyHandler, usageHandler, redeemHandler, subscriptionHandler, announcementHandler, adminHandlers, gatewayHandler, openAIGatewayHandler, soraGatewayHandler, soraClientHandler, handlerSettingHandler, totpHandler, handlerPaymentHandler, paymentWebhookHandler, idempotencyCoordinator, idempotencyCleanupService)
+	handlers := handler.ProvideHandlers(authHandler, userHandler, apiKeyHandler, usageHandler, redeemHandler, subscriptionHandler, announcementHandler, adminHandlers, gatewayHandler, openAIGatewayHandler, handlerSettingHandler, totpHandler, handlerPaymentHandler, paymentWebhookHandler, idempotencyCoordinator, idempotencyCleanupService)
 	jwtAuthMiddleware := middleware.NewJWTAuthMiddleware(authService, userService)
 	adminAuthMiddleware := middleware.NewAdminAuthMiddleware(authService, userService, settingService)
 	apiKeyAuthMiddleware := middleware.NewAPIKeyAuthMiddleware(apiKeyService, subscriptionService, configConfig)
@@ -254,13 +243,12 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	opsAlertEvaluatorService := service.ProvideOpsAlertEvaluatorService(opsService, opsRepository, emailService, webhookService, redisClient, configConfig)
 	opsCleanupService := service.ProvideOpsCleanupService(opsRepository, db, redisClient, configConfig)
 	opsScheduledReportService := service.ProvideOpsScheduledReportService(opsService, userService, emailService, redisClient, configConfig)
-	soraMediaCleanupService := service.ProvideSoraMediaCleanupService(soraMediaStorage, configConfig)
 	tokenRefreshService := service.ProvideTokenRefreshService(accountRepository, oAuthService, openAIOAuthService, geminiOAuthService, antigravityOAuthService, compositeTokenCacheInvalidator, schedulerCache, configConfig, tempUnschedCache, privacyClientFactory, proxyRepository, oAuthRefreshAPI)
 	accountExpiryService := service.ProvideAccountExpiryService(accountRepository)
 	subscriptionExpiryService := service.ProvideSubscriptionExpiryService(userSubscriptionRepository)
 	scheduledTestRunnerService := service.ProvideScheduledTestRunnerService(scheduledTestPlanRepository, scheduledTestService, accountTestService, rateLimitService, configConfig)
 	paymentOrderExpiryService := service.ProvidePaymentOrderExpiryService(paymentService)
-	v := provideCleanup(client, redisClient, opsMetricsCollector, opsAggregationService, opsAlertEvaluatorService, opsCleanupService, opsScheduledReportService, opsSystemLogSink, soraMediaCleanupService, schedulerSnapshotService, tokenRefreshService, accountExpiryService, subscriptionExpiryService, usageCleanupService, idempotencyCleanupService, pricingService, emailQueueService, billingCacheService, usageRecordWorkerPool, subscriptionService, oAuthService, openAIOAuthService, geminiOAuthService, antigravityOAuthService, openAIGatewayService, scheduledTestRunnerService, backupService, paymentOrderExpiryService)
+	v := provideCleanup(client, redisClient, opsMetricsCollector, opsAggregationService, opsAlertEvaluatorService, opsCleanupService, opsScheduledReportService, opsSystemLogSink, schedulerSnapshotService, tokenRefreshService, accountExpiryService, subscriptionExpiryService, usageCleanupService, idempotencyCleanupService, pricingService, emailQueueService, billingCacheService, usageRecordWorkerPool, subscriptionService, oAuthService, openAIOAuthService, geminiOAuthService, antigravityOAuthService, openAIGatewayService, scheduledTestRunnerService, backupService, paymentOrderExpiryService)
 	bootstrap := provideBootstrap(settingService, userRepository, configConfig)
 	application := &Application{
 		Server:    httpServer,
@@ -315,7 +303,6 @@ func provideCleanup(
 	opsCleanup *service.OpsCleanupService,
 	opsScheduledReport *service.OpsScheduledReportService,
 	opsSystemLogSink *service.OpsSystemLogSink,
-	soraMediaCleanup *service.SoraMediaCleanupService,
 	schedulerSnapshot *service.SchedulerSnapshotService,
 	tokenRefresh *service.TokenRefreshService,
 	accountExpiry *service.AccountExpiryService,
@@ -476,12 +463,6 @@ func provideCleanup(
 				}
 				return nil
 			}},
-			{"SoraMediaCleanupService", func() error {
-				if soraMediaCleanup != nil {
-					soraMediaCleanup.Stop()
-				}
-				return nil
-			}},
 		}
 
 		infraSteps := []cleanupStep{

backend/cmd/server/wire_gen_test.go

@@ -59,7 +59,6 @@ func TestProvideCleanup_WithMinimalDependencies_NoPanic(t *testing.T) {
 		&service.OpsCleanupService{},
 		&service.OpsScheduledReportService{},
 		opsSystemLogSinkSvc,
-		nil, // soraMediaCleanup (从本地版本合并)
 		schedulerSnapshotSvc,
 		tokenRefreshSvc,
 		accountExpirySvc,