Fix: unexpected operation of document management (#10366)

### What problem does this PR solve?

 Unexpected operation of document management.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/common/check_team_permission.py

@@ -0,0 +1,59 @@
+#
+#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+
+from api.db import TenantPermission
+from api.db.db_models import File, Knowledgebase
+from api.db.services.file_service import FileService
+from api.db.services.knowledgebase_service import KnowledgebaseService
+from api.db.services.user_service import TenantService
+
+
+def check_kb_team_permission(kb: dict | Knowledgebase, other: str) -> bool:
+    kb = kb.to_dict() if isinstance(kb, Knowledgebase) else kb
+
+    kb_tenant_id = kb["tenant_id"]
+
+    if kb_tenant_id == other:
+        return True
+
+    if kb["permission"] != TenantPermission.TEAM:
+        return False
+
+    joined_tenants = TenantService.get_joined_tenants_by_user_id(other)
+    return any(tenant["tenant_id"] == kb_tenant_id for tenant in joined_tenants)
+
+
+def check_file_team_permission(file: dict | File, other: str) -> bool:
+    file = file.to_dict() if isinstance(file, File) else file
+
+    file_tenant_id = file["tenant_id"]
+    if file_tenant_id == other:
+        return True
+
+    file_id = file["id"]
+
+    kb_ids = [kb_info["kb_id"] for kb_info in FileService.get_kb_id_by_file_id(file_id)]
+
+    for kb_id in kb_ids:
+        ok, kb = KnowledgebaseService.get_by_id(kb_id)
+        if not ok:
+            continue
+
+        if check_kb_team_permission(kb, other):
+            return True
+
+    return False