refactor(webui): shrink fork implementation

webui/src/i18n/locales/en/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "Scroll to bottom",
     "loadEarlier": "Load earlier messages",
-    "fork": {
-      "failed": "Could not fork this chat. Try again.",
-      "fromHistory": "Forked from history"
-    },
+    "forkedFromHistory": "Forked from history",
     "promptNavigator": {
       "open": "Open prompt navigator",
       "title": "Prompts",
@@ -854,8 +851,6 @@
     "imageAttachment": "Image attachment",
     "automationSourceFallback": "Automation",
     "automationTriggered": "Triggered automatically",
-    "copyMessage": "Copy",
-    "copiedMessage": "Copied",
     "forkFromHere": "Fork",
     "copyReply": "Copy",
     "copiedReply": "Copied",

webui/src/i18n/locales/es/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "Desplazarse al final",
     "loadEarlier": "Cargar mensajes anteriores",
-    "fork": {
-      "failed": "No se pudo bifurcar este chat. Inténtalo de nuevo.",
-      "fromHistory": "Bifurcado desde el historial"
-    },
+    "forkedFromHistory": "Bifurcado desde el historial",
     "promptNavigator": {
       "open": "Abrir navegador de prompts",
       "title": "Prompts",
@@ -840,8 +837,6 @@
     "agentActivityLiveSummary": "En curso… · {{reasoning}} pasos · {{tools}} llamadas a herramientas",
     "agentActivityLiveToolsOnly": "En curso… · {{tools}} llamadas a herramientas",
     "imageAttachment": "Imagen adjunta",
-    "copyMessage": "Copiar",
-    "copiedMessage": "Copiado",
     "forkFromHere": "Bifurcar",
     "copyReply": "Copiar",
     "copiedReply": "Copiado",

webui/src/i18n/locales/fr/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "Faire défiler vers le bas",
     "loadEarlier": "Charger les messages précédents",
-    "fork": {
-      "failed": "Impossible de bifurquer cette conversation. Réessayez.",
-      "fromHistory": "Bifurqué depuis l'historique"
-    },
+    "forkedFromHistory": "Bifurqué depuis l'historique",
     "promptNavigator": {
       "open": "Ouvrir le navigateur de prompts",
       "title": "Prompts",
@@ -840,8 +837,6 @@
     "agentActivityLiveSummary": "En cours… · {{reasoning}} étapes · {{tools}} appels d’outils",
     "agentActivityLiveToolsOnly": "En cours… · {{tools}} appels d’outils",
     "imageAttachment": "Pièce jointe image",
-    "copyMessage": "Copier",
-    "copiedMessage": "Copié",
     "forkFromHere": "Bifurquer",
     "copyReply": "Copier",
     "copiedReply": "Copié",

webui/src/i18n/locales/id/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "Gulir ke bawah",
     "loadEarlier": "Muat pesan sebelumnya",
-    "fork": {
-      "failed": "Tidak dapat mem-fork chat ini. Coba lagi.",
-      "fromHistory": "Fork dari riwayat"
-    },
+    "forkedFromHistory": "Fork dari riwayat",
     "promptNavigator": {
       "open": "Buka navigator prompt",
       "title": "Prompt",
@@ -840,8 +837,6 @@
     "agentActivityLiveSummary": "Berjalan… · {{reasoning}} langkah · {{tools}} panggilan alat",
     "agentActivityLiveToolsOnly": "Berjalan… · {{tools}} panggilan alat",
     "imageAttachment": "Lampiran gambar",
-    "copyMessage": "Salin",
-    "copiedMessage": "Disalin",
     "forkFromHere": "Fork",
     "copyReply": "Salin",
     "copiedReply": "Disalin",

webui/src/i18n/locales/ja/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "一番下へスクロール",
     "loadEarlier": "以前のメッセージを読み込む",
-    "fork": {
-      "failed": "このチャットを分岐できませんでした。もう一度お試しください。",
-      "fromHistory": "履歴から分岐"
-    },
+    "forkedFromHistory": "履歴から分岐",
     "promptNavigator": {
       "open": "プロンプトナビゲーターを開く",
       "title": "プロンプト",
@@ -840,8 +837,6 @@
     "agentActivityLiveSummary": "実行中… · {{reasoning}} ステップ · ツール呼び出し {{tools}} 回",
     "agentActivityLiveToolsOnly": "実行中… · ツール呼び出し {{tools}} 回",
     "imageAttachment": "画像の添付",
-    "copyMessage": "コピー",
-    "copiedMessage": "コピー済み",
     "forkFromHere": "分岐",
     "copyReply": "コピー",
     "copiedReply": "コピー済み",

webui/src/i18n/locales/ko/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "맨 아래로 스크롤",
     "loadEarlier": "이전 메시지 불러오기",
-    "fork": {
-      "failed": "이 채팅을 분기할 수 없습니다. 다시 시도해 주세요.",
-      "fromHistory": "기록에서 분기됨"
-    },
+    "forkedFromHistory": "기록에서 분기됨",
     "promptNavigator": {
       "open": "프롬프트 탐색기 열기",
       "title": "프롬프트",
@@ -840,8 +837,6 @@
     "agentActivityLiveSummary": "진행 중… · {{reasoning}}단계 · 도구 호출 {{tools}}회",
     "agentActivityLiveToolsOnly": "진행 중… · 도구 호출 {{tools}}회",
     "imageAttachment": "이미지 첨부",
-    "copyMessage": "복사",
-    "copiedMessage": "복사됨",
     "forkFromHere": "분기",
     "copyReply": "복사",
     "copiedReply": "복사됨",

webui/src/i18n/locales/vi/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "Cuộn xuống cuối",
     "loadEarlier": "Tải tin nhắn trước đó",
-    "fork": {
-      "failed": "Không thể rẽ nhánh cuộc trò chuyện này. Hãy thử lại.",
-      "fromHistory": "Tách nhánh từ lịch sử"
-    },
+    "forkedFromHistory": "Tách nhánh từ lịch sử",
     "promptNavigator": {
       "open": "Mở trình điều hướng prompt",
       "title": "Prompt",
@@ -840,8 +837,6 @@
     "agentActivityLiveSummary": "Đang chạy… · {{reasoning}} bước · {{tools}} lần gọi công cụ",
     "agentActivityLiveToolsOnly": "Đang chạy… · {{tools}} lần gọi công cụ",
     "imageAttachment": "Tệp hình ảnh đính kèm",
-    "copyMessage": "Sao chép",
-    "copiedMessage": "Đã sao chép",
     "forkFromHere": "Tách nhánh",
     "copyReply": "Sao chép",
     "copiedReply": "Đã sao chép",

webui/src/i18n/locales/zh-CN/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "滚动到底部",
     "loadEarlier": "加载更早消息",
-    "fork": {
-      "failed": "无法分叉这个对话，请重试。",
-      "fromHistory": "从历史消息分叉"
-    },
+    "forkedFromHistory": "从历史消息分叉",
     "promptNavigator": {
       "open": "打开输入导航",
       "title": "输入列表",
@@ -854,8 +851,6 @@
     "imageAttachment": "图片附件",
     "automationSourceFallback": "自动化",
     "automationTriggered": "自动触发",
-    "copyMessage": "复制",
-    "copiedMessage": "已复制",
     "forkFromHere": "分叉",
     "copyReply": "复制",
     "copiedReply": "已复制",

webui/src/i18n/locales/zh-TW/common.json

@@ -811,10 +811,7 @@
     },
     "scrollToBottom": "捲動到底部",
     "loadEarlier": "載入更早訊息",
-    "fork": {
-      "failed": "無法分叉這個對話，請重試。",
-      "fromHistory": "從歷史訊息分叉"
-    },
+    "forkedFromHistory": "從歷史訊息分叉",
     "promptNavigator": {
       "open": "開啟輸入導覽",
       "title": "輸入列表",
@@ -840,8 +837,6 @@
     "agentActivityLiveSummary": "進行中… · {{reasoning}} 步 · {{tools}} 次工具呼叫",
     "agentActivityLiveToolsOnly": "進行中… · {{tools}} 次工具呼叫",
     "imageAttachment": "圖片附件",
-    "copyMessage": "複製",
-    "copiedMessage": "已複製",
     "forkFromHere": "分叉",
     "copyReply": "複製",
     "copiedReply": "已複製",