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-TW.json

@@ -640,8 +640,6 @@
             },
             "refresh": {
                 "title": "重新整理模型列表",
-                "quick": "同步變更",
-                "quickTooltip": "掃描新的或缺少的模型檔案，讓清單保持最新。",
                 "full": "重建快取",
                 "fullTooltip": "從中繼資料檔重新載入所有模型資訊；適用於清單過時或手動編輯後。"
             },
@@ -816,8 +814,6 @@
             },
             "refresh": {
                 "title": "重新整理配方列表",
-                "quick": "同步變更",
-                "quickTooltip": "同步變更 - 快速重新整理而不重建快取",
                 "full": "重建快取",
                 "fullTooltip": "重建快取 - 重新掃描所有配方檔案"
             },
@@ -1961,4 +1957,4 @@
             "retry": "重試"
         }
     }
-}
+}