Kanban card user icon should be in title (vibe-kanban) (#1303)

* Done! The kanban card layout is now restructured with **Title + Avatar + Actions** in the header row, and the description spans the full card width below.

* Done! The avatar is now inline at the start of the title text with:
- Sized down to `h-5 w-5` (from default `h-6 w-6`) to align better with the `text-sm` title
- Inline-block with vertical alignment
- Title text gets full remaining width without squishing
- Actions stay on the right

* Done! Changed to `inline-flex` so the avatar initials are properly centered while staying inline with the title text.

* Done! Created [TaskCardHeader](file:///private/var/folders/m1/9q_ct1913z10v6wbnv54j25r0000gn/T/vibe-kanban/worktrees/665f-kanban-card-user/frontend/src/components/tasks/TaskCardHeader.tsx) and updated both cards:

**Changes:**
- **TaskCardHeader**: Shared component with inline avatar + optional actions slot
- **TaskCard**: Now uses TaskCardHeader with status indicators passed via `right` prop
- **SharedTaskCard**: Normalized to use TaskCardHeader with TaskCard styles (no more muted text, consistent spacing/sizing)

Both cards now share the same header pattern with inline avatars.

* invert header avatar colour

frontend/src/components/tasks/SharedTaskCard.tsx

@@ -1,7 +1,7 @@
 import { useCallback, useEffect, useRef } from 'react';
 import { KanbanCard } from '@/components/ui/shadcn-io/kanban';
 import type { SharedTaskRecord } from '@/hooks/useProjectTasks';
-import { UserAvatar } from './UserAvatar';
+import { TaskCardHeader } from './TaskCardHeader';
 
 interface SharedTaskCardProps {
   task: SharedTaskRecord;
@@ -48,23 +48,22 @@ export function SharedTaskCard({
       dragDisabled
       className="relative overflow-hidden pl-5 before:absolute before:left-0 before:top-0 before:bottom-0 before:w-[3px] before:bg-muted-foreground before:content-['']"
     >
-      <div className="flex items-center gap-3">
-        <UserAvatar
-          firstName={task.assignee_first_name ?? undefined}
-          lastName={task.assignee_last_name ?? undefined}
-          username={task.assignee_username ?? undefined}
-          // TODO: Add imageUrl={task.assignee_avatar_url} when backend provides it
+      <div className="flex flex-col gap-2">
+        <TaskCardHeader
+          title={task.title}
+          avatar={{
+            firstName: task.assignee_first_name ?? undefined,
+            lastName: task.assignee_last_name ?? undefined,
+            username: task.assignee_username ?? undefined,
+          }}
         />
-        <div className="flex min-w-0 flex-1 flex-col gap-1 font-light">
-          <h4 className="text-sm text-muted-foreground line-clamp-2">
-            {task.title}
-          </h4>
-          {task.description && (
-            <p className="text-xs text-muted-foreground line-clamp-2">
-              {task.description}
-            </p>
-          )}
-        </div>
+        {task.description && (
+          <p className="text-sm text-secondary-foreground break-words">
+            {task.description.length > 130
+              ? `${task.description.substring(0, 130)}...`
+              : task.description}
+          </p>
+        )}
       </div>
     </KanbanCard>
   );

frontend/src/components/tasks/TaskCard.tsx

@@ -8,7 +8,7 @@ import { useNavigateWithSearch } from '@/hooks';
 import { paths } from '@/lib/paths';
 import { attemptsApi } from '@/lib/api';
 import type { SharedTaskRecord } from '@/hooks/useProjectTasks';
-import { UserAvatar } from './UserAvatar';
+import { TaskCardHeader } from './TaskCardHeader';
 import { useTranslation } from 'react-i18next';
 
 type Task = TaskWithAttemptStatus;
@@ -93,35 +93,29 @@ export function TaskCard({
           : undefined
       }
     >
-      <div className="flex gap-3">
-        {sharedTask ? (
-          <UserAvatar
-            firstName={sharedTask.assignee_first_name ?? undefined}
-            lastName={sharedTask.assignee_last_name ?? undefined}
-            username={sharedTask.assignee_username ?? undefined}
-            // TODO: Add imageUrl={sharedTask.assignee_avatar_url} when backend provides it
-            className="self-center"
-          />
-        ) : null}
-        <div className="flex min-w-0 flex-1 flex-col gap-2">
-          <div className="flex flex-1 min-w-0 items-center gap-2">
-            <h4 className="flex-1 min-w-0 line-clamp-2 font-light text-sm">
-              {task.title}
-            </h4>
-            <div className="flex items-center gap-1">
-              {/* In Progress Spinner */}
+      <div className="flex flex-col gap-2">
+        <TaskCardHeader
+          title={task.title}
+          avatar={
+            sharedTask
+              ? {
+                  firstName: sharedTask.assignee_first_name ?? undefined,
+                  lastName: sharedTask.assignee_last_name ?? undefined,
+                  username: sharedTask.assignee_username ?? undefined,
+                }
+              : undefined
+          }
+          right={
+            <>
               {task.has_in_progress_attempt && (
                 <Loader2 className="h-4 w-4 animate-spin text-blue-500" />
               )}
-              {/* Merged Indicator */}
               {task.has_merged_attempt && (
                 <CheckCircle className="h-4 w-4 text-green-500" />
               )}
-              {/* Failed Indicator */}
               {task.last_attempt_failed && !task.has_merged_attempt && (
                 <XCircle className="h-4 w-4 text-destructive" />
               )}
-              {/* Parent Task Indicator */}
               {task.parent_task_attempt && (
                 <Button
                   variant="icon"
@@ -134,18 +128,17 @@ export function TaskCard({
                   <Link className="h-4 w-4" />
                 </Button>
               )}
-              {/* Actions Menu */}
               <ActionsDropdown task={task} sharedTask={sharedTask} />
-            </div>
-          </div>
-          {task.description && (
-            <p className="text-sm text-secondary-foreground break-words">
-              {task.description.length > 130
-                ? `${task.description.substring(0, 130)}...`
-                : task.description}
-            </p>
-          )}
-        </div>
+            </>
+          }
+        />
+        {task.description && (
+          <p className="text-sm text-secondary-foreground break-words">
+            {task.description.length > 130
+              ? `${task.description.substring(0, 130)}...`
+              : task.description}
+          </p>
+        )}
       </div>
     </KanbanCard>
   );

frontend/src/components/tasks/TaskCardHeader.tsx

@@ -0,0 +1,47 @@
+import type { ReactNode } from 'react';
+import { UserAvatar } from './UserAvatar';
+
+interface HeaderAvatar {
+  firstName?: string;
+  lastName?: string;
+  username?: string;
+  imageUrl?: string;
+}
+
+interface TaskCardHeaderProps {
+  title: ReactNode;
+  avatar?: HeaderAvatar;
+  right?: ReactNode;
+  className?: string;
+  titleClassName?: string;
+}
+
+export function TaskCardHeader({
+  title,
+  avatar,
+  right,
+  className,
+  titleClassName,
+}: TaskCardHeaderProps) {
+  return (
+    <div className={`flex items-start gap-3 min-w-0 ${className ?? ''}`}>
+      <h4
+        className={`flex-1 min-w-0 line-clamp-2 font-light text-sm ${titleClassName ?? ''}`}
+      >
+        {avatar ? (
+          <UserAvatar
+            firstName={avatar.firstName}
+            lastName={avatar.lastName}
+            username={avatar.username}
+            imageUrl={avatar.imageUrl}
+            className="mr-2 inline-flex align-middle h-5 w-5"
+          />
+        ) : null}
+        <span className="align-middle">{title}</span>
+      </h4>
+      {right ? (
+        <div className="flex items-center gap-1 shrink-0">{right}</div>
+      ) : null}
+    </div>
+  );
+}

frontend/src/components/tasks/UserAvatar.tsx

@@ -99,7 +99,7 @@ export const UserAvatar = ({
   return (
     <div
       className={cn(
-        'flex h-6 w-6 shrink-0 items-center justify-center overflow-hidden rounded-full border border-border bg-muted text-xs font-medium text-muted-foreground',
+        'flex h-6 w-6 shrink-0 items-center justify-center overflow-hidden rounded-full border border-border bg-muted-foreground text-xs font-medium text-muted',
         className
       )}
       title={label}