apply the patches

apps/ui/src/components/views/board-view/hooks/use-board-drag-drop.ts

@@ -8,6 +8,11 @@ import { COLUMNS, ColumnId } from '../constants';
 
 const logger = createLogger('BoardDragDrop');
 
+export interface PendingDependencyLink {
+  draggedFeature: Feature;
+  targetFeature: Feature;
+}
+
 interface UseBoardDragDropProps {
   features: Feature[];
   currentProject: { path: string; id: string } | null;
@@ -24,7 +29,10 @@ export function useBoardDragDrop({
   handleStartImplementation,
 }: UseBoardDragDropProps) {
   const [activeFeature, setActiveFeature] = useState<Feature | null>(null);
-  const { moveFeature } = useAppStore();
+  const [pendingDependencyLink, setPendingDependencyLink] = useState<PendingDependencyLink | null>(
+    null
+  );
+  const { moveFeature, updateFeature } = useAppStore();
 
   // Note: getOrCreateWorktreeForFeature removed - worktrees are now created server-side
   // at execution time based on feature.branchName
@@ -40,6 +48,11 @@ export function useBoardDragDrop({
     [features]
   );
 
+  // Clear pending dependency link
+  const clearPendingDependencyLink = useCallback(() => {
+    setPendingDependencyLink(null);
+  }, []);
+
   const handleDragEnd = useCallback(
     async (event: DragEndEvent) => {
       const { active, over } = event;
@@ -57,6 +70,85 @@ export function useBoardDragDrop({
       // Check if this is a running task (non-skipTests, TDD)
       const isRunningTask = runningAutoTasks.includes(featureId);
 
+      // Check if dropped on another card (for creating dependency links)
+      if (overId.startsWith('card-drop-')) {
+        const cardData = over.data.current as {
+          type: string;
+          featureId: string;
+        };
+
+        if (cardData?.type === 'card') {
+          const targetFeatureId = cardData.featureId;
+
+          // Don't link to self
+          if (targetFeatureId === featureId) {
+            return;
+          }
+
+          const targetFeature = features.find((f) => f.id === targetFeatureId);
+          if (!targetFeature) return;
+
+          // Only allow linking backlog features (both must be in backlog)
+          if (draggedFeature.status !== 'backlog' || targetFeature.status !== 'backlog') {
+            toast.error('Cannot link features', {
+              description: 'Both features must be in the backlog to create a dependency link.',
+            });
+            return;
+          }
+
+          // Set pending dependency link to trigger dialog
+          setPendingDependencyLink({
+            draggedFeature,
+            targetFeature,
+          });
+          return;
+        }
+      }
+
+      // Check if dropped on a worktree tab
+      if (overId.startsWith('worktree-drop-')) {
+        // Handle dropping on a worktree - change the feature's branchName
+        const worktreeData = over.data.current as {
+          type: string;
+          branch: string;
+          path: string;
+          isMain: boolean;
+        };
+
+        if (worktreeData?.type === 'worktree') {
+          // Don't allow moving running tasks to a different worktree
+          if (isRunningTask) {
+            logger.debug('Cannot move running feature to different worktree');
+            toast.error('Cannot move feature', {
+              description: 'This feature is currently running and cannot be moved.',
+            });
+            return;
+          }
+
+          const targetBranch = worktreeData.branch;
+          const currentBranch = draggedFeature.branchName;
+
+          // If already on the same branch, nothing to do
+          if (currentBranch === targetBranch) {
+            return;
+          }
+
+          // For main worktree, set branchName to undefined/null to indicate it should use main
+          // For other worktrees, set branchName to the target branch
+          const newBranchName = worktreeData.isMain ? undefined : targetBranch;
+
+          // Update feature's branchName
+          updateFeature(featureId, { branchName: newBranchName });
+          await persistFeatureUpdate(featureId, { branchName: newBranchName });
+
+          const branchDisplay = worktreeData.isMain ? targetBranch : targetBranch;
+          toast.success('Feature moved to branch', {
+            description: `Moved to ${branchDisplay}: ${draggedFeature.description.slice(0, 40)}${draggedFeature.description.length > 40 ? '...' : ''}`,
+          });
+          return;
+        }
+      }
+
       // Determine if dragging is allowed based on status and skipTests
       // - Backlog items can always be dragged
       // - waiting_approval items can always be dragged (to allow manual verification via drag)
@@ -205,12 +297,21 @@ export function useBoardDragDrop({
         }
       }
     },
-    [features, runningAutoTasks, moveFeature, persistFeatureUpdate, handleStartImplementation]
+    [
+      features,
+      runningAutoTasks,
+      moveFeature,
+      updateFeature,
+      persistFeatureUpdate,
+      handleStartImplementation,
+    ]
   );
 
   return {
     activeFeature,
     handleDragStart,
     handleDragEnd,
+    pendingDependencyLink,
+    clearPendingDependencyLink,
   };
 }