feat: Add bulk download missing LoRAs feature for recipes

- Add BulkMissingLoraDownloadManager.js for handling bulk LoRA downloads
- Add context menu item to bulk mode for downloading missing LoRAs
- Add confirmation modal with deduplicated LoRA list preview
- Implement sequential downloading with WebSocket progress updates
- Fix CSS class naming conflicts to avoid import-modal.css collision
- Update translations for 9 languages (en, zh-CN, zh-TW, ja, ko, ru, de, fr, es, he)
- Style modal without internal scrolling for better UX

locales/zh-TW.json

@@ -575,6 +575,7 @@
             "skipMetadataRefresh": "跳過所選模型的元數據更新",
             "resumeMetadataRefresh": "恢復所選模型的元數據更新",
             "deleteAll": "刪除全部模型",
+            "downloadMissingLoras": "下載缺失的 LoRAs",
             "clear": "清除選取",
             "skipMetadataRefreshCount": "跳過（{count} 個模型）",
             "resumeMetadataRefreshCount": "恢復（{count} 個模型）",
@@ -983,6 +984,14 @@
             "save": "更新基礎模型",
             "cancel": "取消"
         },
+        "bulkDownloadMissingLoras": {
+            "title": "下載缺失的 LoRAs",
+            "message": "發現 {uniqueCount} 個獨特的缺失 LoRAs（從選取食譜中的 {totalCount} 個總數）。",
+            "previewTitle": "要下載的 LoRAs：",
+            "moreItems": "...還有 {count} 個",
+            "note": "檔案將使用預設路徑模板下載。根據 LoRAs 的數量，這可能需要一些時間。",
+            "downloadButton": "下載 {count} 個 LoRA(s)"
+        },
         "exampleAccess": {
             "title": "本機範例圖片",
             "message": "此模型未找到本機範例圖片。可選擇：",
@@ -1507,7 +1516,10 @@
             "batchImportNoUrls": "請輸入至少一個 URL 或檔案路徑",
             "batchImportNoDirectory": "請輸入目錄路徑",
             "batchImportBrowseFailed": "瀏覽目錄失敗：{message}",
-            "batchImportDirectorySelected": "已選擇目錄：{path}"
+            "batchImportDirectorySelected": "已選擇目錄：{path}",
+            "noRecipesSelected": "未選取任何食譜",
+            "noMissingLorasInSelection": "在選取的食譜中未找到缺失的 LoRAs",
+            "noLoraRootConfigured": "未配置 LoRA 根目錄。請在設定中設定預設的 LoRA 根目錄。"
         },
         "models": {
             "noModelsSelected": "未選擇模型",