fix(ui): remove redundant Quick Refresh from Refresh split button dropdown

The main Refresh button and Quick Refresh dropdown item both called refreshModels(false). Split button dropdowns should only contain alternative actions (Hick's Law). Dropdown now has only Rebuild Cache (fullRebuild=true). Removed from 2 templates, 2 JS files, 1 test fixture, and 10 locale files.

locales/zh-CN.json

@@ -640,8 +640,6 @@
             },
             "refresh": {
                 "title": "刷新模型列表",
-                "quick": "同步变更",
-                "quickTooltip": "扫描新的或缺失的模型文件，保持列表最新。",
                 "full": "重建缓存",
                 "fullTooltip": "从元数据文件重新加载所有模型信息；用于列表过时或手动编辑后。"
             },
@@ -816,8 +814,6 @@
             },
             "refresh": {
                 "title": "刷新配方列表",
-                "quick": "同步变更",
-                "quickTooltip": "同步变更 - 快速刷新而不重建缓存",
                 "full": "重建缓存",
                 "fullTooltip": "重建缓存 - 重新扫描所有配方文件"
             },
@@ -1961,4 +1957,4 @@
             "retry": "重试"
         }
     }
-}
+}