Merge branch 'main' into test

# Conflicts:
#	backend/cmd/server/VERSION
#	backend/ent/migrate/schema.go
#	backend/ent/mutation.go
#	backend/ent/runtime/runtime.go
#	backend/ent/usagelog.go
#	backend/ent/usagelog/usagelog.go
#	backend/ent/usagelog/where.go
#	backend/ent/usagelog_create.go
#	backend/ent/usagelog_update.go
#	backend/internal/repository/usage_log_repo.go
#	backend/internal/server/api_contract_test.go
#	backend/internal/server/middleware/cors.go
#	backend/internal/service/gateway_service.go

frontend/src/types/index.ts

@@ -627,6 +627,10 @@ export interface Account {
   // 启用后将在15分钟内固定 metadata.user_id 中的 session ID
   session_id_masking_enabled?: boolean | null
 
+  // 缓存 TTL 强制替换（仅 Anthropic OAuth/SetupToken 账号有效）
+  cache_ttl_override_enabled?: boolean | null
+  cache_ttl_override_target?: string | null
+
   // 运行时状态（仅当启用对应限制时返回）
   current_window_cost?: number | null // 当前窗口费用
   active_sessions?: number | null // 当前活跃会话数
@@ -840,6 +844,9 @@ export interface UsageLog {
   // User-Agent
   user_agent: string | null
 
+  // Cache TTL Override
+  cache_ttl_overridden: boolean
+
   created_at: string
 
   user?: User