feat(other): guide standalone users to settings.json from the no-paths empty state

The standalone empty state showed the folder_paths keys but not where to
put them, and its Open Settings button led to a modal that cannot edit
primary folder paths. Now the page shows the real settings.json path and
an Open Settings Folder button backed by the existing open-location API.

Also stop open_settings_location from claiming success on headless Linux
sessions: with no DISPLAY/WAYLAND_DISPLAY, xdg-open cannot work, so the
handler now returns clipboard mode and the browser copies/shows the path
instead.

locales/de.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "Nur die oben aufgeführten Ordnerschlüssel werden gescannt; nicht benötigte Schlüssel können weggelassen werden.",
             "descriptionComfyUI": "Die Verwaltung weiterer Modelle ist aktiviert, aber keiner der konfigurierten Modellordner existiert auf dem Datenträger. Fügen Sie die entsprechenden Modellordner zu Ihren ComfyUI-Modellpfaden hinzu und laden Sie diese Seite neu.",
             "hintComfyUI": "Weitere Modelle werden aus den Ordnern vae, upscale_models, text_encoders, clip_vision und controlnet von ComfyUI gelesen.",
-            "openSettings": "Einstellungen öffnen"
+            "openSettings": "Einstellungen öffnen",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/en.json

@@ -1241,11 +1241,12 @@
     },
     "noPaths": {
       "title": "No other-model folders found",
-      "descriptionStandalone": "Other Models management is on, but none of the configured model folders exist on disk. Add the folder paths below to settings.json and restart LoRA Manager.",
+      "descriptionStandalone": "Other Models management is on, but no other-model folders were found. Add the folder keys you need to the folder_paths section of your settings.json, then restart LoRA Manager.",
       "hintStandalone": "Only the folder keys listed above are scanned; keys you do not need can be omitted.",
       "descriptionComfyUI": "Other Models management is on, but none of the configured model folders exist on disk. Add the matching model folders to your ComfyUI model paths, then reload this page.",
       "hintComfyUI": "Other models are read from ComfyUI's vae, upscale_models, text_encoders, clip_vision and controlnet folders.",
-      "openSettings": "Open Settings"
+      "openSettings": "Open Settings",
+      "openSettingsFolder": "Open Settings Folder"
     }
   },
   "sidebar": {

locales/es.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "Solo se escanean las claves de carpeta listadas arriba; las claves que no necesites puedes omitirlas.",
             "descriptionComfyUI": "La gestión de otros modelos está activada, pero ninguna de las carpetas de modelos configuradas existe en el disco. Añade las carpetas de modelos correspondientes a tus rutas de modelos de ComfyUI y recarga esta página.",
             "hintComfyUI": "Los otros modelos se leen de las carpetas vae, upscale_models, text_encoders, clip_vision y controlnet de ComfyUI.",
-            "openSettings": "Abrir configuración"
+            "openSettings": "Abrir configuración",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/fr.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "Seules les clés de dossiers listées ci-dessus sont analysées ; les clés inutiles peuvent être omises.",
             "descriptionComfyUI": "La gestion des autres modèles est activée, mais aucun des dossiers de modèles configurés n’existe sur le disque. Ajoutez les dossiers de modèles correspondants à vos chemins de modèles ComfyUI, puis rechargez cette page.",
             "hintComfyUI": "Les autres modèles sont lus depuis les dossiers vae, upscale_models, text_encoders, clip_vision et controlnet de ComfyUI.",
-            "openSettings": "Ouvrir les paramètres"
+            "openSettings": "Ouvrir les paramètres",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/he.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "רק מפתחות התיקיות המפורטים למעלה נסרקים; ניתן להשמיט מפתחות שאינך צריך.",
             "descriptionComfyUI": "ניהול המודלים האחרים פועל, אך אף אחת מתיקיות המודלים המוגדרות אינה קיימת בדיסק. הוסף את תיקיות המודלים המתאימות לנתיבי המודלים של ComfyUI וטען מחדש עמוד זה.",
             "hintComfyUI": "מודלים אחרים נקראים מתיקיות vae, upscale_models, text_encoders, clip_vision ו-controlnet של ComfyUI.",
-            "openSettings": "פתח הגדרות"
+            "openSettings": "פתח הגדרות",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/ja.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "スキャンされるのは上記のフォルダーキーのみです。不要なキーは省略できます。",
             "descriptionComfyUI": "その他のモデル管理はオンですが、設定されたモデルフォルダーがディスク上に存在しません。該当するモデルフォルダーをComfyUIのモデルパスに追加し、このページを再読み込みしてください。",
             "hintComfyUI": "その他のモデルは、ComfyUIのvae、upscale_models、text_encoders、clip_vision、controlnetフォルダーから読み込まれます。",
-            "openSettings": "設定を開く"
+            "openSettings": "設定を開く",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/ko.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "위에 나열된 폴더 키만 스캔됩니다. 필요 없는 키는 생략할 수 있습니다.",
             "descriptionComfyUI": "기타 모델 관리가 켜져 있지만, 설정된 모델 폴더가 디스크에 존재하지 않습니다. 해당 모델 폴더를 ComfyUI 모델 경로에 추가한 뒤 이 페이지를 새로 고침하세요.",
             "hintComfyUI": "기타 모델은 ComfyUI의 vae, upscale_models, text_encoders, clip_vision, controlnet 폴더에서 읽어옵니다.",
-            "openSettings": "설정 열기"
+            "openSettings": "설정 열기",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/ru.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "Сканируются только перечисленные выше ключи папок; ненужные ключи можно опустить.",
             "descriptionComfyUI": "Управление другими моделями включено, но ни одна из настроенных папок моделей не существует на диске. Добавьте соответствующие папки моделей в пути к моделям ComfyUI и перезагрузите эту страницу.",
             "hintComfyUI": "Другие модели читаются из папок vae, upscale_models, text_encoders, clip_vision и controlnet в ComfyUI.",
-            "openSettings": "Открыть настройки"
+            "openSettings": "Открыть настройки",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/zh-CN.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "只会扫描上面列出的文件夹键；不需要的键可以省略。",
             "descriptionComfyUI": "其他模型管理已开启，但配置的模型文件夹在磁盘上都不存在。请将对应的模型文件夹添加到 ComfyUI 的模型路径，然后重新加载此页面。",
             "hintComfyUI": "其他模型从 ComfyUI 的 vae、upscale_models、text_encoders、clip_vision 和 controlnet 文件夹中读取。",
-            "openSettings": "打开设置"
+            "openSettings": "打开设置",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {

locales/zh-TW.json

@@ -1245,7 +1245,8 @@
             "hintStandalone": "只會掃描上方列出的資料夾鍵；不需要的鍵可以省略。",
             "descriptionComfyUI": "其他模型管理已開啟，但設定的模型資料夾在磁碟上都不存在。請將對應的模型資料夾加入 ComfyUI 的模型路徑，然後重新載入此頁面。",
             "hintComfyUI": "其他模型會從 ComfyUI 的 vae、upscale_models、text_encoders、clip_vision 和 controlnet 資料夾讀取。",
-            "openSettings": "開啟設定"
+            "openSettings": "開啟設定",
+            "openSettingsFolder": "[TODO: Translate] Open Settings Folder"
         }
     },
     "sidebar": {