feat(tenant): add tenant package query endpoint

Add tenant package query functionality. Regular users can access this endpoint to retrieve their tenant's package information.

api/app/controllers/__init__.py

@@ -47,7 +47,8 @@ from . import (
     user_memory_controllers,
     workspace_controller,
     ontology_controller,
-    skill_controller
+    skill_controller,
+    tenant_subscription_controller,
 )
 
 # 创建管理端 API 路由器
@@ -98,5 +99,6 @@ manager_router.include_router(file_storage_controller.router)
 manager_router.include_router(ontology_controller.router)
 manager_router.include_router(skill_controller.router)
 manager_router.include_router(i18n_controller.router)
+manager_router.include_router(tenant_subscription_controller.router)
 
 __all__ = ["manager_router"]

api/app/controllers/tenant_subscription_controller.py

@@ -0,0 +1,53 @@
+"""
+租户套餐查询接口（普通用户可访问）
+"""
+from typing import Callable
+
+from fastapi import APIRouter, Depends
+from fastapi.responses import JSONResponse
+from sqlalchemy.orm import Session
+
+from app.core.logging_config import get_api_logger
+from app.core.response_utils import success, fail
+from app.db import get_db
+from app.dependencies import get_current_user
+from app.i18n.dependencies import get_translator
+from app.models.user_model import User
+from app.schemas.response_schema import ApiResponse
+
+logger = get_api_logger()
+
+router = APIRouter(prefix="/tenant", tags=["Tenant"])
+
+
+@router.get("/subscription", response_model=ApiResponse, summary="获取当前用户所属租户的套餐信息")
+async def get_my_tenant_subscription(
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db),
+    t: Callable = Depends(get_translator),
+):
+    """
+    获取当前登录用户所属租户的有效套餐订阅信息。
+    包含套餐名称、版本、配额、到期时间等。
+    """
+    try:
+        from premium.platform_admin.package_plan_service import TenantSubscriptionService
+
+        if not current_user.tenant:
+            return JSONResponse(status_code=404, content=fail(code=404, msg="用户未关联租户"))
+
+        tenant_id = current_user.tenant.id
+        svc = TenantSubscriptionService(db)
+        sub = svc.get_subscription(tenant_id)
+
+        if not sub:
+            return success(data=None, msg="暂无有效套餐")
+
+        return success(data=svc.build_response(sub))
+
+    except ModuleNotFoundError:
+        # 社区版无 premium 模块，返回空
+        return success(data=None, msg="套餐功能未启用")
+    except Exception as e:
+        logger.error(f"获取租户套餐信息失败: {e}", exc_info=True)
+        return JSONResponse(status_code=500, content=fail(code=500, msg="获取套餐信息失败"))