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 = 10 * 1024 * 1024
+MAX_UPLOAD_BYTES = 20 * 1024 * 1024
 
 
 class QAIn(BaseModel):
@@ -82,7 +82,7 @@ async def upload_doc(avatar_id: str, file: UploadFile = File(...), authorization
     path = os.path.join(avatar_dir, stored)
     content = await file.read()
     if len(content) > MAX_UPLOAD_BYTES:
-        return fail("文件不能超过 10MB", code=400)
+        return fail("文件不能超过 20MB", code=400)
     with open(path, "wb") as f:
         f.write(content)
     doc = KnowledgeDoc(

digital-avatar-app/nginx.conf

@@ -23,6 +23,10 @@ http {
 
         root /usr/share/nginx/html;
         index index.html;
+        # Keep the application gateway aligned with the production edge gateway.
+        # Without this Nginx rejects ordinary PDF uploads with HTTP 413 before
+        # FastAPI can return its user-facing file-size validation message.
+        client_max_body_size 20m;
 
         # SPA 兜底（hash 路由下深链接也可正常加载）
         location / {