feat(huya): 协作台账支持皮肤筛选与主页截图拖拽/粘贴上传

- 外部单列表新增礼包/皮肤精确筛选，并提供去重下拉选项
- 主页截图支持拖拽、多选及 Ctrl/Cmd+V 剪贴板粘贴上传

tests/test_huya_collab_orders.py

@@ -1433,6 +1433,33 @@ class TestCollabKeywordSearch(TestCollabBase):
         assert self._search("查不到的东西") == []
 
 
+class TestCollabGiftFilter(TestCollabBase):
+    """按礼包/皮肤筛选：下拉选项去重，查询按礼包名精确匹配。"""
+
+    def test_list_orders_filters_by_exact_gift_name(self):
+        target = self._create(order_no="G-1", gift_name="天网终结者大礼包")
+        self._create(order_no="G-2", gift_name="套装-纯白跃动")
+
+        rows, total = collab.list_orders(self.db, gift_name="天网终结者大礼包")
+        assert total == 1
+        assert [row.id for row in rows] == [target.id]
+
+        # 筛选项是点选值，不做模糊匹配（模糊搜索仍走 keyword）
+        rows, total = collab.list_orders(self.db, gift_name="天网")
+        assert total == 0
+        assert rows == []
+
+    def test_gift_names_are_unique_sorted_and_ignore_empty(self):
+        self._create(order_no="G-3", gift_name="套装-纯白跃动")
+        self._create(order_no="G-4", gift_name="套装-纯白跃动")
+        self._create(order_no="G-5", gift_name="天网终结者大礼包")
+        self._create(order_no="G-6", gift_name="")
+
+        assert collab.list_gift_names(self.db) == sorted(
+            ["套装-纯白跃动", "天网终结者大礼包"]
+        )
+
+
 class TestCollabBuyerCluster(TestCollabBase):
     """同一买家的多单：按「绑定账号 + 绑定角色」软识别（只读派生，不动 uid 唯一性）。