fix: add unarchive support for archived tasks

apps/frontend/src/renderer/components/KanbanBoard.tsx

@@ -29,7 +29,7 @@ import { SortableTaskCard } from './SortableTaskCard';
 import { QueueSettingsModal } from './QueueSettingsModal';
 import { TASK_STATUS_COLUMNS, TASK_STATUS_LABELS } from '../../shared/constants';
 import { cn } from '../lib/utils';
-import { persistTaskStatus, forceCompleteTask, archiveTasks, deleteTasks, useTaskStore, isQueueAtCapacity, DEFAULT_MAX_PARALLEL_TASKS } from '../stores/task-store';
+import { persistTaskStatus, forceCompleteTask, archiveTasks, unarchiveTasks, deleteTasks, useTaskStore, isQueueAtCapacity, DEFAULT_MAX_PARALLEL_TASKS } from '../stores/task-store';
 import { updateProjectSettings, useProjectStore } from '../stores/project-store';
 import { useKanbanSettingsStore, DEFAULT_COLUMN_WIDTH, MIN_COLUMN_WIDTH, MAX_COLUMN_WIDTH, COLLAPSED_COLUMN_WIDTH_REM, MIN_COLUMN_WIDTH_REM, MAX_COLUMN_WIDTH_REM, BASE_FONT_SIZE, pxToRem } from '../stores/kanban-settings-store';
 import { useToast } from '../hooks/use-toast';
@@ -986,6 +986,19 @@ export function KanbanBoard({ tasks, onTaskClick, onNewTaskClick, onRefresh, isR
         });
       }
     }
+
+    // Auto-unarchive: moving an archived task to another state implies the user wants it active
+    if (result.success && task?.metadata?.archivedAt && projectId) {
+      const unarchiveResult = await unarchiveTasks(projectId, [taskId]);
+      if (!unarchiveResult.success) {
+        toast({
+          title: t('common:errors.operationFailed'),
+          description: unarchiveResult.error,
+          variant: 'destructive',
+        });
+      }
+    }
+
     // Note: queue auto-promotion when a task leaves in_progress is handled by the
     // useEffect task status change listener (registerTaskStatusChangeListener), so
     // no explicit processQueue() call is needed here.

apps/frontend/src/renderer/components/TaskCard.tsx

@@ -1,6 +1,6 @@
 import { useState, useEffect, useRef, memo, useMemo } from 'react';
 import { useTranslation } from 'react-i18next';
-import { Play, Square, Clock, Zap, Target, Shield, Gauge, Palette, FileCode, Bug, Wrench, Loader2, AlertTriangle, RotateCcw, Archive, GitPullRequest, MoreVertical } from 'lucide-react';
+import { Play, Square, Clock, Zap, Target, Shield, Gauge, Palette, FileCode, Bug, Wrench, Loader2, AlertTriangle, RotateCcw, Archive, ArchiveRestore, GitPullRequest, MoreVertical } from 'lucide-react';
 import { Card, CardContent } from './ui/card';
 import { Badge } from './ui/badge';
 import { Button } from './ui/button';
@@ -31,7 +31,7 @@ import {
   JSON_ERROR_PREFIX,
   JSON_ERROR_TITLE_SUFFIX
 } from '../../shared/constants';
-import { stopTask, checkTaskRunning, recoverStuckTask, isIncompleteHumanReview, archiveTasks, hasRecentActivity, startTaskOrQueue } from '../stores/task-store';
+import { stopTask, checkTaskRunning, recoverStuckTask, isIncompleteHumanReview, archiveTasks, unarchiveTasks, hasRecentActivity, startTaskOrQueue } from '../stores/task-store';
 import { useToast } from '../hooks/use-toast';
 import type { Task, TaskCategory, ReviewReason, TaskStatus } from '../../shared/types';
 
@@ -265,6 +265,18 @@ export const TaskCard = memo(function TaskCard({
     }
   };
 
+  const handleUnarchive = async (e: React.MouseEvent) => {
+    e.stopPropagation();
+    const result = await unarchiveTasks(task.projectId, [task.id]);
+    if (!result.success) {
+      toast({
+        title: t('tasks:actions.unarchive'),
+        description: result.error,
+        variant: 'destructive',
+      });
+    }
+  };
+
   const handleViewPR = (e: React.MouseEvent) => {
     e.stopPropagation();
     if (task.metadata?.prUrl && window.electronAPI?.openExternal) {
@@ -571,7 +583,17 @@ export const TaskCard = memo(function TaskCard({
                     <GitPullRequest className="h-3 w-3" />
                   </Button>
                 )}
-                {!task.metadata?.archivedAt && (
+                {task.metadata?.archivedAt ? (
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    className="h-7 px-2 cursor-pointer"
+                    onClick={handleUnarchive}
+                    title={t('tooltips.unarchiveTask')}
+                  >
+                    <ArchiveRestore className="h-3 w-3" />
+                  </Button>
+                ) : (
                   <Button
                     variant="ghost"
                     size="sm"
@@ -583,6 +605,17 @@ export const TaskCard = memo(function TaskCard({
                   </Button>
                 )}
               </div>
+            ) : task.status === 'done' && task.metadata?.archivedAt ? (
+              <Button
+                variant="ghost"
+                size="sm"
+                className="h-7 px-2.5 hover:bg-muted-foreground/10"
+                onClick={handleUnarchive}
+                title={t('tooltips.unarchiveTask')}
+              >
+                <ArchiveRestore className="mr-1.5 h-3 w-3" />
+                {t('actions.unarchive')}
+              </Button>
             ) : task.status === 'done' && !task.metadata?.archivedAt ? (
               <Button
                 variant="ghost"

apps/frontend/src/renderer/stores/task-store.ts

@@ -1043,6 +1043,36 @@ export async function deleteTasks(
   }
 }
 
+/**
+ * Unarchive tasks
+ * Removes the archivedAt timestamp from task metadata
+ */
+export async function unarchiveTasks(
+  projectId: string,
+  taskIds: string[]
+): Promise<{ success: boolean; error?: string }> {
+  try {
+    const result = await window.electronAPI.unarchiveTasks(projectId, taskIds);
+
+    if (result.success) {
+      // Reload tasks to update the UI
+      await loadTasks(projectId);
+      return { success: true };
+    }
+
+    return {
+      success: false,
+      error: result.error || 'Failed to unarchive tasks'
+    };
+  } catch (error) {
+    console.error('Error unarchiving tasks:', error);
+    return {
+      success: false,
+      error: error instanceof Error ? error.message : 'Unknown error'
+    };
+  }
+}
+
 /**
  * Archive tasks
  * Marks tasks as archived by adding archivedAt timestamp to metadata

apps/frontend/src/shared/i18n/locales/en/tasks.json

@@ -16,6 +16,7 @@
     "recover": "Recover",
     "resume": "Resume",
     "archive": "Archive",
+    "unarchive": "Unarchive",
     "delete": "Delete",
     "view": "View Details",
     "viewPR": "View PR",
@@ -43,6 +44,7 @@
   },
   "tooltips": {
     "archiveTask": "Archive task",
+    "unarchiveTask": "Unarchive task",
     "archiveAllDone": "Archive all done tasks",
     "viewPR": "Open pull request in browser"
   },

apps/frontend/src/shared/i18n/locales/fr/tasks.json

@@ -16,6 +16,7 @@
     "recover": "Récupérer",
     "resume": "Reprendre",
     "archive": "Archiver",
+    "unarchive": "Désarchiver",
     "delete": "Supprimer",
     "view": "Voir les détails",
     "viewPR": "Voir la PR",
@@ -43,6 +44,7 @@
   },
   "tooltips": {
     "archiveTask": "Archiver la tâche",
+    "unarchiveTask": "Désarchiver la tâche",
     "archiveAllDone": "Archiver toutes les tâches terminées",
     "viewPR": "Ouvrir la pull request dans le navigateur"
   },