fix(avatar): cap knowledge files at 50MB

digital-avatar-app/backend/routers/knowledge.py

@@ -17,7 +17,7 @@ UPLOAD_DIR = os.path.abspath(os.getenv("UPLOAD_DIR", os.path.join(BASE_DIR, "upl
 os.makedirs(UPLOAD_DIR, exist_ok=True)
 
 ALLOWED_EXT = {".md", ".txt", ".pdf", ".doc", ".docx", ".xlsx"}
-MAX_UPLOAD_BYTES = 100 * 1024 * 1024
+MAX_UPLOAD_BYTES = 50 * 1024 * 1024
 UPLOAD_CHUNK_BYTES = 1024 * 1024
 
 
@@ -88,7 +88,7 @@ async def upload_doc(avatar_id: str, file: UploadFile = File(...), authorization
             while chunk := await file.read(UPLOAD_CHUNK_BYTES):
                 file_size += len(chunk)
                 if file_size > MAX_UPLOAD_BYTES:
-                    raise ValueError("文件不能超过 100MB")
+                    raise ValueError("文件不能超过 50MB")
                 f.write(chunk)
     except ValueError as exc:
         if os.path.exists(path):

digital-avatar-app/backend/tests/test_knowledge_storage.py

@@ -82,7 +82,7 @@ def test_upload_rejects_oversize_file_before_queuing_indexing(
 
     payload = response.json()
     assert payload["code"] == 400
-    assert payload["message"] == "文件不能超过 100MB"
+    assert payload["message"] == "文件不能超过 50MB"
     enqueue.assert_not_called()
     assert not list((tmp_path / context["avatar"].id).glob("*"))