Add rename workspace functionality (Vibe Kanban) (#1868)

* I've added the rename workspace functionality. Here's a summary of the changes:

## Summary

The backend already had rename workspace support via the `PUT /api/task-attempts/{attemptId}` endpoint with the `name` field. I added the frontend UI to expose this functionality.

### Files Created

1. **`frontend/src/components/ui-new/dialogs/RenameWorkspaceDialog.tsx`**
   - New dialog component for renaming workspaces
   - Shows the current name (or branch name as fallback)
   - Allows user to input a new name
   - Handles mutation with proper error handling and cache invalidation

### Files Modified

1. **`frontend/src/components/ui-new/actions/index.ts`**
   - Added `PencilSimpleIcon` import
   - Added `RenameWorkspaceDialog` import
   - Added new `RenameWorkspace` action that shows the rename dialog

2. **`frontend/src/components/ui-new/actions/pages.ts`**
   - Added `Actions.RenameWorkspace` to the `workspaceActions` page (at the top of the list)

3. **`frontend/src/i18n/locales/en/common.json`**
   - Added translations for the rename workspace dialog under `workspaces.rename`

### How to Use

Users can now rename a workspace by:
1. Clicking the three-dot menu (⋯) on any workspace in the sidebar
2. Selecting "Rename" from the command bar
3. Entering a new name in the dialog
4. Clicking "Rename" to save

* Cleanup script changes for workspace 4eb64331-cc43-43af-849e-3731664e53b9

* Added the missing translations for the rename workspace dialog to all locale files:
- **es** (Spanish)
- **ja** (Japanese)
- **ko** (Korean)
- **zh-Hans** (Simplified Chinese)
- **zh-Hant** (Traditional Chinese)

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

@@ -129,7 +129,15 @@
     "archived": "Archived",
     "loading": "Loading...",
     "selectToStart": "Select a workspace to get started",
-    "draft": "Draft"
+    "draft": "Draft",
+    "rename": {
+      "title": "Rename Workspace",
+      "description": "Enter a new name for this workspace.",
+      "nameLabel": "Name",
+      "placeholder": "Enter workspace name",
+      "action": "Rename",
+      "renaming": "Renaming..."
+    }
   },
   "fileTree": {
     "searchPlaceholder": "Search files...",

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

@@ -129,7 +129,15 @@
     "archived": "Archivado",
     "loading": "Cargando...",
     "selectToStart": "Selecciona un espacio de trabajo para comenzar",
-    "draft": "Borrador"
+    "draft": "Borrador",
+    "rename": {
+      "title": "Renombrar espacio de trabajo",
+      "description": "Ingresa un nuevo nombre para este espacio de trabajo.",
+      "nameLabel": "Nombre",
+      "placeholder": "Ingresa el nombre del espacio de trabajo",
+      "action": "Renombrar",
+      "renaming": "Renombrando..."
+    }
   },
   "fileTree": {
     "searchPlaceholder": "Buscar archivos...",

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

@@ -129,7 +129,15 @@
     "archived": "アーカイブ済み",
     "loading": "読み込み中...",
     "selectToStart": "ワークスペースを選択して開始",
-    "draft": "下書き"
+    "draft": "下書き",
+    "rename": {
+      "title": "ワークスペースの名前を変更",
+      "description": "このワークスペースの新しい名前を入力してください。",
+      "nameLabel": "名前",
+      "placeholder": "ワークスペース名を入力",
+      "action": "名前を変更",
+      "renaming": "名前を変更中..."
+    }
   },
   "fileTree": {
     "searchPlaceholder": "ファイルを検索...",

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

@@ -129,7 +129,15 @@
     "archived": "보관됨",
     "loading": "로딩 중...",
     "selectToStart": "워크스페이스를 선택하여 시작",
-    "draft": "초안"
+    "draft": "초안",
+    "rename": {
+      "title": "워크스페이스 이름 변경",
+      "description": "이 워크스페이스의 새 이름을 입력하세요.",
+      "nameLabel": "이름",
+      "placeholder": "워크스페이스 이름 입력",
+      "action": "이름 변경",
+      "renaming": "이름 변경 중..."
+    }
   },
   "fileTree": {
     "searchPlaceholder": "파일 검색...",

frontend/src/i18n/locales/zh-Hans/common.json

@@ -129,7 +129,15 @@
     "archived": "已归档",
     "loading": "加载中...",
     "selectToStart": "选择一个工作区开始",
-    "draft": "草稿"
+    "draft": "草稿",
+    "rename": {
+      "title": "重命名工作区",
+      "description": "输入此工作区的新名称。",
+      "nameLabel": "名称",
+      "placeholder": "输入工作区名称",
+      "action": "重命名",
+      "renaming": "正在重命名..."
+    }
   },
   "fileTree": {
     "searchPlaceholder": "搜索文件...",

frontend/src/i18n/locales/zh-Hant/common.json

@@ -129,7 +129,15 @@
     "archived": "已封存",
     "loading": "載入中...",
     "selectToStart": "選擇一個工作區開始",
-    "draft": "草稿"
+    "draft": "草稿",
+    "rename": {
+      "title": "重新命名工作區",
+      "description": "輸入此工作區的新名稱。",
+      "nameLabel": "名稱",
+      "placeholder": "輸入工作區名稱",
+      "action": "重新命名",
+      "renaming": "正在重新命名..."
+    }
   },
   "fileTree": {
     "searchPlaceholder": "搜尋檔案...",