Simplify WorkspaceSummary card hover UI with opacity fade and single action button (Vibe Kanban) (#2059)

* All changes are complete. Here's a summary of what was changed:

## Summary of Changes

### `WorkspaceSummary.tsx`
1. **Title truncation**: Replaced `truncate` class with CSS mask gradient that fades to transparent (no ellipsis dots)
2. **Simplified hover actions**: Removed pin and archive buttons, keeping only the "more options" (ListIcon) button
3. **Removed sliding animation**: The action button now uses simple opacity transition (`opacity-0 group-hover:opacity-100`) instead of the sliding animation
4. **Removed unused code**: `handleArchive`, `handlePin` functions and `ArchiveIcon` import removed
5. **Removed unused props**: `onArchive` and `onPin` props removed from interface

### `WorkspacesSidebar.tsx`
- Removed `onArchiveWorkspace` and `onPinWorkspace` props from interface and destructuring

### `WorkspacesSidebarContainer.tsx`
- Removed `handleArchiveWorkspace` and `handlePinWorkspace` callbacks
- Removed unused imports (`useCallback`, `useActions`, `Actions`)

All type checks pass. The pin and archive functionality is still accessible through the command bar (more options button).

* Cleanup script changes for workspace 262a1c1d-87ae-40f5-a36d-f43758d18fed

* Done. Changed `ListIcon` to `DotsThreeIcon` with `weight="bold"` for the more options button.

* Done. Changed the icon size from `size-icon-xs` to `size-5` (20px) while keeping the bold weight.

* Done. Added the `ArchiveWorkspace` action to the left side of the navbar in `NavbarActionGroups.left`.

frontend/src/components/ui-new/actions/index.ts

@@ -965,7 +965,7 @@ export type NavbarItem = ActionDefinition | typeof NavbarDivider;
 
 // Navbar action groups define which actions appear in each section
 export const NavbarActionGroups = {
-  left: [Actions.OpenInOldUI] as ActionDefinition[],
+  left: [Actions.ArchiveWorkspace, Actions.OpenInOldUI] as ActionDefinition[],
   right: [
     Actions.ToggleDiffViewMode,
     Actions.ToggleAllDiffs,

frontend/src/components/ui-new/containers/WorkspacesSidebarContainer.tsx

@@ -1,6 +1,5 @@
-import { useState, useCallback, useMemo } from 'react';
+import { useState, useMemo } from 'react';
 import { useWorkspaceContext } from '@/contexts/WorkspaceContext';
-import { useActions } from '@/contexts/ActionsContext';
 import { useScratch } from '@/hooks/useScratch';
 import { ScratchType, type DraftWorkspaceData } from 'shared/types';
 import { splitMessageToTitleDescription } from '@/utils/string';
@@ -9,7 +8,6 @@ import {
   usePersistedExpanded,
 } from '@/stores/useUiPreferencesStore';
 import { WorkspacesSidebar } from '@/components/ui-new/views/WorkspacesSidebar';
-import { Actions } from '@/components/ui-new/actions';
 
 // Fixed UUID for the universal workspace draft (same as in useCreateModeState.ts)
 const DRAFT_WORKSPACE_ID = '00000000-0000-0000-0000-000000000001';
@@ -50,23 +48,6 @@ export function WorkspacesSidebarContainer() {
     return title || 'New Workspace';
   }, [draftScratch]);
 
-  // Action handlers for sidebar workspace actions
-  const { executeAction } = useActions();
-
-  const handleArchiveWorkspace = useCallback(
-    (workspaceId: string) => {
-      executeAction(Actions.ArchiveWorkspace, workspaceId);
-    },
-    [executeAction]
-  );
-
-  const handlePinWorkspace = useCallback(
-    (workspaceId: string) => {
-      executeAction(Actions.PinWorkspace, workspaceId);
-    },
-    [executeAction]
-  );
-
   return (
     <WorkspacesSidebar
       workspaces={activeWorkspaces}
@@ -76,8 +57,6 @@ export function WorkspacesSidebarContainer() {
       searchQuery={searchQuery}
       onSearchChange={setSearchQuery}
       onAddWorkspace={navigateToCreate}
-      onArchiveWorkspace={handleArchiveWorkspace}
-      onPinWorkspace={handlePinWorkspace}
       isCreateMode={isCreateMode}
       draftTitle={persistedDraftTitle}
       onSelectCreate={navigateToCreate}

frontend/src/components/ui-new/primitives/WorkspaceSummary.tsx

@@ -6,8 +6,7 @@ import {
   FileIcon,
   CircleIcon,
   GitPullRequestIcon,
-  ArchiveIcon,
-  ListIcon,
+  DotsThreeIcon,
 } from '@phosphor-icons/react';
 import { useTranslation } from 'react-i18next';
 import { cn } from '@/lib/utils';
@@ -31,8 +30,6 @@ interface WorkspaceSummaryProps {
   latestProcessStatus?: 'running' | 'completed' | 'failed' | 'killed';
   prStatus?: 'open' | 'merged' | 'closed' | 'unknown';
   onClick?: () => void;
-  onArchive?: () => void;
-  onPin?: () => void;
   className?: string;
   summary?: boolean;
   /** Whether this is a draft workspace (shows "Draft" instead of elapsed time) */
@@ -55,8 +52,6 @@ export function WorkspaceSummary({
   latestProcessStatus,
   prStatus,
   onClick,
-  onArchive,
-  onPin,
   className,
   summary = false,
   isDraft = false,
@@ -74,16 +69,6 @@ export function WorkspaceSummary({
     });
   };
 
-  const handleArchive = (e: React.MouseEvent) => {
-    e.stopPropagation();
-    onArchive?.();
-  };
-
-  const handlePin = (e: React.MouseEvent) => {
-    e.stopPropagation();
-    onPin?.();
-  };
-
   return (
     <div
       className={cn(
@@ -108,7 +93,18 @@ export function WorkspaceSummary({
             : 'text-low opacity-60 hover:opacity-100 hover:text-normal'
         )}
       >
-        <div className={cn('truncate pr-double', !summary && 'text-normal')}>
+        <div
+          className={cn(
+            'overflow-hidden whitespace-nowrap pr-double',
+            !summary && 'text-normal'
+          )}
+          style={{
+            maskImage:
+              'linear-gradient(to right, black calc(100% - 24px), transparent 100%)',
+            WebkitMaskImage:
+              'linear-gradient(to right, black calc(100% - 24px), transparent 100%)',
+          }}
+        >
           {name}
         </div>
         {(!summary || isActive) && (
@@ -204,55 +200,23 @@ export function WorkspaceSummary({
         )}
       </button>
 
-      {/* Right-side hover zone for action overlay */}
+      {/* Right-side hover action - more options only */}
       {workspaceId && (
-        <div className="absolute right-0 top-0 bottom-0 w-16 group/actions">
-          {/* Sliding action overlay - only appears when hovering this zone */}
-          <div
-            className={cn(
-              'absolute right-0 top-0 bottom-0 flex items-center',
-              'translate-x-full group-hover/actions:translate-x-0',
-              'transition-transform duration-150 ease-out'
-            )}
-          >
-            {/* Gradient fade from transparent to pill background */}
+        <div className="absolute right-0 top-0 bottom-0 flex items-center opacity-0 group-hover:opacity-100">
+          {/* Gradient fade from transparent to background */}
           <div className="h-full w-6 pointer-events-none bg-gradient-to-r from-transparent to-secondary" />
-            {/* Action pill */}
-            <div className="flex items-center gap-0.5 pr-base h-full bg-secondary">
-              <button
-                onClick={handlePin}
-                onPointerDown={(e) => e.stopPropagation()}
-                className={cn(
-                  'p-1.5 rounded-sm transition-colors duration-100',
-                  'hover:bg-tertiary',
-                  isPinned ? 'text-brand' : 'text-low hover:text-normal'
-                )}
-                title={isPinned ? t('workspaces.unpin') : t('workspaces.pin')}
-              >
-                <PushPinIcon
-                  className="size-icon-xs"
-                  weight={isPinned ? 'fill' : 'regular'}
-                />
-              </button>
-              <button
-                onClick={handleArchive}
-                onPointerDown={(e) => e.stopPropagation()}
-                className="p-1.5 rounded-sm text-low hover:text-normal hover:bg-tertiary transition-colors duration-100"
-                title={t('workspaces.archive')}
-              >
-                <ArchiveIcon className="size-icon-xs" />
-              </button>
+          {/* Single action button */}
+          <div className="flex items-center pr-base h-full bg-secondary">
             <button
               onClick={handleOpenCommandBar}
               onPointerDown={(e) => e.stopPropagation()}
-                className="p-1.5 rounded-sm text-low hover:text-normal hover:bg-tertiary transition-colors duration-100"
+              className="p-1.5 rounded-sm text-low hover:text-normal hover:bg-tertiary"
               title={t('workspaces.more')}
             >
-                <ListIcon className="size-icon-xs" />
+              <DotsThreeIcon className="size-5" weight="bold" />
             </button>
           </div>
         </div>
-        </div>
       )}
     </div>
   );

frontend/src/components/ui-new/views/WorkspacesSidebar.tsx

@@ -11,8 +11,6 @@ interface WorkspacesSidebarProps {
   selectedWorkspaceId: string | null;
   onSelectWorkspace: (id: string) => void;
   onAddWorkspace?: () => void;
-  onArchiveWorkspace?: (id: string) => void;
-  onPinWorkspace?: (id: string) => void;
   searchQuery: string;
   onSearchChange: (value: string) => void;
   /** Whether we're in create mode */
@@ -33,8 +31,6 @@ export function WorkspacesSidebar({
   selectedWorkspaceId,
   onSelectWorkspace,
   onAddWorkspace,
-  onArchiveWorkspace,
-  onPinWorkspace,
   searchQuery,
   onSearchChange,
   isCreateMode = false,
@@ -107,8 +103,6 @@ export function WorkspacesSidebar({
                   latestProcessStatus={workspace.latestProcessStatus}
                   prStatus={workspace.prStatus}
                   onClick={() => onSelectWorkspace(workspace.id)}
-                  onArchive={() => onArchiveWorkspace?.(workspace.id)}
-                  onPin={() => onPinWorkspace?.(workspace.id)}
                 />
               ))
             )}
@@ -145,8 +139,6 @@ export function WorkspacesSidebar({
                 latestProcessStatus={workspace.latestProcessStatus}
                 prStatus={workspace.prStatus}
                 onClick={() => onSelectWorkspace(workspace.id)}
-                onArchive={() => onArchiveWorkspace?.(workspace.id)}
-                onPin={() => onPinWorkspace?.(workspace.id)}
               />
             ))}
           </div>