🛠️ fix: v1 interface feedback regressions

Resolve verified V1 frontend feedback by improving channel workflows, auth behavior, API key interactions, user filtering, layout persistence, subscription quota handling, i18n text, pricing metadata, and stale frontend cache recovery.

- Add a global frontend cache version cleanup to prevent old frontend localStorage from causing page errors after upgrades.
- Fix channel copy refresh, model mapping input focus loss, create-channel fetch-model title state, upstream model update confirmation, and batch test toast behavior.
- Respect password login settings and improve Turnstile, forgot-password, registration, and invite-link flows.
- Make user role/status filtering server-side and preserve table page size in URLs.
- Improve API key edit validation feedback and prefetch real keys for reliable copy actions.
- Fix rankings access fail-open behavior, double scrollbars, subscription received amount conversion/display, token i18n wording, model deletion confirmation grammar, and Claude pricing context inference.
- Add clearer Playground model/group loading errors.

Validation:
- bun run typecheck
- bun run i18n:sync
- gofmt on modified Go files
- go test ./controller ./model -run '^$'

web/default/src/i18n/locales/en.json

@@ -382,6 +382,7 @@
     "Apps using the most tokens through new-api": "Apps using the most tokens through new-api",
     "are also listed here. Remove them from Models to keep the `/v1/models` response user-friendly and hide vendor-specific names.": "are also listed here. Remove them from Models to keep the `/v1/models` response user-friendly and hide vendor-specific names.",
     "Are you sure you want to delete": "Are you sure you want to delete",
+    "Are you sure you want to delete {{count}} model(s)? This action cannot be undone.": "Are you sure you want to delete {{count}} model(s)? This action cannot be undone.",
     "Are you sure you want to delete all auto-disabled keys? This action cannot be undone.": "Are you sure you want to delete all auto-disabled keys? This action cannot be undone.",
     "Are you sure you want to delete deployment \"{{name}}\"? This action cannot be undone.": "Are you sure you want to delete deployment \"{{name}}\"? This action cannot be undone.",
     "Are you sure you want to delete this key? This action cannot be undone.": "Are you sure you want to delete this key? This action cannot be undone.",

web/default/src/i18n/locales/fr.json

@@ -382,6 +382,7 @@
     "Apps using the most tokens through new-api": "Applications consommant le plus de jetons via new-api",
     "are also listed here. Remove them from Models to keep the `/v1/models` response user-friendly and hide vendor-specific names.": "sont également listés ici. Supprimez-les des Modèles pour que la réponse `/v1/models` reste conviviale et pour masquer les noms spécifiques aux fournisseurs.",
     "Are you sure you want to delete": "Êtes-vous sûr de vouloir supprimer",
+    "Are you sure you want to delete {{count}} model(s)? This action cannot be undone.": "Êtes-vous sûr de vouloir supprimer {{count}} modèle(s) ? Cette action ne peut pas être annulée.",
     "Are you sure you want to delete all auto-disabled keys? This action cannot be undone.": "Êtes-vous sûr de vouloir supprimer toutes les clés automatiquement désactivées ? Cette action ne peut pas être annulée.",
     "Are you sure you want to delete deployment \"{{name}}\"? This action cannot be undone.": "Êtes-vous sûr de vouloir supprimer le déploiement \"{{name}}\" ? Cette action est irréversible.",
     "Are you sure you want to delete this key? This action cannot be undone.": "Êtes-vous sûr de vouloir supprimer cette clé ? Cette action ne peut pas être annulée.",

web/default/src/i18n/locales/ja.json

@@ -382,6 +382,7 @@
     "Apps using the most tokens through new-api": "new-api 経由で最も多くのトークンを利用しているアプリ",
     "are also listed here. Remove them from Models to keep the `/v1/models` response user-friendly and hide vendor-specific names.": "もここにリストされています。`/v1/models` レスポンスをユーザーフレンドリーに保ち、ベンダー固有の名前を隠すために、Models からこれらを削除します。",
     "Are you sure you want to delete": "削除してもよろしいですか",
+    "Are you sure you want to delete {{count}} model(s)? This action cannot be undone.": "{{count}} 個のモデルを削除してもよろしいですか？この操作は元に戻せません。",
     "Are you sure you want to delete all auto-disabled keys? This action cannot be undone.": "すべての自動無効化されたキーを削除してもよろしいですか？この操作は元に戻せません。",
     "Are you sure you want to delete deployment \"{{name}}\"? This action cannot be undone.": "デプロイ \"{{name}}\" を削除してもよろしいですか？この操作は元に戻せません。",
     "Are you sure you want to delete this key? This action cannot be undone.": "このキーを削除してもよろしいですか？この操作は元に戻せません。",

web/default/src/i18n/locales/ru.json

@@ -382,6 +382,7 @@
     "Apps using the most tokens through new-api": "Приложения, использующие больше всего токенов через new-api",
     "are also listed here. Remove them from Models to keep the `/v1/models` response user-friendly and hide vendor-specific names.": "также перечислены здесь. Удалите их из Моделей, чтобы ответ `/v1/models` был удобным для пользователя и скрывал имена, специфичные для поставщиков.",
     "Are you sure you want to delete": "Вы уверены, что хотите удалить",
+    "Are you sure you want to delete {{count}} model(s)? This action cannot be undone.": "Вы уверены, что хотите удалить {{count}} модел(ей)? Это действие нельзя отменить.",
     "Are you sure you want to delete all auto-disabled keys? This action cannot be undone.": "Вы уверены, что хотите удалить все автоматически отключённые ключи? Это действие нельзя отменить.",
     "Are you sure you want to delete deployment \"{{name}}\"? This action cannot be undone.": "Вы уверены, что хотите удалить развертывание \"{{name}}\"? Это действие нельзя отменить.",
     "Are you sure you want to delete this key? This action cannot be undone.": "Вы уверены, что хотите удалить этот ключ? Это действие нельзя отменить.",

web/default/src/i18n/locales/vi.json

@@ -382,6 +382,7 @@
     "Apps using the most tokens through new-api": "Ứng dụng dùng nhiều token nhất qua new-api",
     "are also listed here. Remove them from Models to keep the `/v1/models` response user-friendly and hide vendor-specific names.": "cũng được liệt kê ở đây. Xóa chúng khỏi Models để giữ cho phản hồi `/v1/models` thân thiện với người dùng và ẩn các tên dành riêng cho nhà cung cấp.",
     "Are you sure you want to delete": "Bạn có chắc chắn muốn xóa ",
+    "Are you sure you want to delete {{count}} model(s)? This action cannot be undone.": "Bạn có chắc muốn xóa {{count}} mô hình không? Hành động này không thể hoàn tác.",
     "Are you sure you want to delete all auto-disabled keys? This action cannot be undone.": "Bạn có chắc chắn muốn xóa tất cả các khóa bị tắt tự động? Hành động này không thể hoàn tác.",
     "Are you sure you want to delete deployment \"{{name}}\"? This action cannot be undone.": "Bạn có chắc muốn xóa triển khai \"{{name}}\" không? Hành động này không thể hoàn tác.",
     "Are you sure you want to delete this key? This action cannot be undone.": "Bạn có chắc chắn muốn xóa khóa này? Hành động này không thể hoàn tác.",

web/default/src/i18n/locales/zh.json

@@ -382,6 +382,7 @@
     "Apps using the most tokens through new-api": "通过 new-api 消耗 Token 最多的应用",
     "are also listed here. Remove them from Models to keep the `/v1/models` response user-friendly and hide vendor-specific names.": "也在此处列出。将它们从模型中移除，以保持 `/v1/models` 响应对用户友好并隐藏供应商特定的名称。",
     "Are you sure you want to delete": "您确定要删除吗",
+    "Are you sure you want to delete {{count}} model(s)? This action cannot be undone.": "您确定要删除 {{count}} 个模型吗？此操作无法撤销。",
     "Are you sure you want to delete all auto-disabled keys? This action cannot be undone.": "您确定要删除所有自动禁用的密钥吗？此操作无法撤销。",
     "Are you sure you want to delete deployment \"{{name}}\"? This action cannot be undone.": "确定要删除部署 \"{{name}}\" 吗？此操作不可撤销。",
     "Are you sure you want to delete this key? This action cannot be undone.": "您确定要删除此密钥吗？此操作无法撤销。",
@@ -3996,8 +3997,8 @@
     "Token usage by model since launch": "自上线以来各模型的 Token 用量",
     "Token-based": "按量计费",
     "Tokenizer": "分词器",
-    "tokens": "令牌",
-    "Tokens": "令牌",
+    "tokens": "Token",
+    "Tokens": "Token",
     "tokens / mo": "token / 月",
     "Tokens by category": "分类 Token 占比",
     "Tokens Only": "仅限 Token",