feat(box): simplify boxing mode API

app/main.py

@@ -22,8 +22,8 @@ from app.services.location_service import AlreadyOffShelfError, DuplicateLocatio
 from app.services.box_service import (
     BoxItemNotFoundError,
     DuplicateBoxItemError,
-    DuplicateZongpaiBindError,
     InvalidBoxItemError,
+    InvalidQuantityError,
     InvalidZongpaiError,
     ZongpaiNotFoundError,
 )
@@ -126,20 +126,6 @@ async def duplicate_box_handler(request: Request, exc: DuplicateBoxItemError):
     )
 
 
-@app.exception_handler(DuplicateZongpaiBindError)
-async def duplicate_zongpai_bind_handler(request: Request, exc: DuplicateZongpaiBindError):
-    return JSONResponse(
-        status_code=409,
-        content={
-            "error_code": "DUPLICATE_ZONGPAI_BIND",
-            "message": f"总排号 {exc.zongpai_no} 已绑定箱号 {exc.box_no}，请勿重复装箱",
-            "paichan_no": exc.paichan_no,
-            "box_no": exc.box_no,
-            "zongpai_no": exc.zongpai_no,
-        },
-    )
-
-
 @app.exception_handler(BoxItemNotFoundError)
 async def box_item_not_found_handler(request: Request, exc: BoxItemNotFoundError):
     return JSONResponse(
@@ -151,6 +137,17 @@ async def box_item_not_found_handler(request: Request, exc: BoxItemNotFoundError
     )
 
 
+@app.exception_handler(InvalidQuantityError)
+async def invalid_quantity_handler(request: Request, exc: InvalidQuantityError):
+    return JSONResponse(
+        status_code=400,
+        content={
+            "error_code": "INVALID_QUANTITY",
+            "message": "装箱数量超出可装数量上限",
+        },
+    )
+
+
 @app.exception_handler(InvalidBoxItemError)
 async def invalid_box_item_handler(request: Request, exc: InvalidBoxItemError):
     return JSONResponse(