refactor: align backend with company-site-member schema and system-level RBAC groups

backend/app/schemas/catalog.py

@@ -0,0 +1,85 @@
+from pydantic import BaseModel
+
+
+class SystemCreateRequest(BaseModel):
+    system_key: str
+    name: str
+    status: str = "active"
+
+
+class SystemItem(BaseModel):
+    id: str
+    system_key: str
+    name: str
+    status: str
+
+
+class ModuleCreateRequest(BaseModel):
+    system_key: str
+    module_key: str
+    name: str
+    status: str = "active"
+
+
+class ModuleItem(BaseModel):
+    id: str
+    system_key: str | None = None
+    module_key: str
+    name: str
+    status: str
+
+
+class CompanyCreateRequest(BaseModel):
+    company_key: str
+    name: str
+    status: str = "active"
+
+
+class CompanyItem(BaseModel):
+    id: str
+    company_key: str
+    name: str
+    status: str
+
+
+class SiteCreateRequest(BaseModel):
+    site_key: str
+    company_key: str
+    name: str
+    status: str = "active"
+
+
+class SiteItem(BaseModel):
+    id: str
+    site_key: str
+    company_key: str
+    name: str
+    status: str
+
+
+class MemberItem(BaseModel):
+    id: str
+    authentik_sub: str
+    email: str | None = None
+    display_name: str | None = None
+    is_active: bool
+
+
+class ListResponse(BaseModel):
+    items: list
+    total: int
+    limit: int
+    offset: int
+
+
+class PermissionGroupCreateRequest(BaseModel):
+    group_key: str
+    name: str
+    status: str = "active"
+
+
+class PermissionGroupItem(BaseModel):
+    id: str
+    group_key: str
+    name: str
+    status: str