Fixed issue where when a task was dropped outside of a task list it would dissappear, now it just returns to where it was picked up from

PROGRESS.md

@@ -69,6 +69,7 @@
 23. **Keyboard Shortcuts:** Added global support for keyboard navigation:
     - **`Escape`**: Instantly close any open modal (Task Detail, Add Task, Settings, or Audit Logs).
     - **`n`**: Open the "Add Task" modal from the main dashboard (disabled while typing in inputs).
+24. **Drag-and-Drop Stability:** Fixed a bug where tasks would "disappear" if dropped in an invalid area. Tasks now remain visible at their original position if a drop is cancelled.
 
 ### Phase 3: Advanced Features
 - **Real-time Notifications:** Explore WebSockets for task assignments.

screens.jsx

@@ -224,8 +224,9 @@ function OverviewScreen({ tasks, onOpen, onAddFor, density, onMoveTask, dbUsers
         <Column
           key={u.id}
           user={u}
-          // Filter out the dragging task from its current column to make it "disappear" from origin
-          tasks={byUser[u.id].filter(t => !draggingTask || t.id !== draggingTask.id)}
+          // Do not filter out the dragging task; TaskCard handles its own visibility via the 'dragging' prop.
+          // This ensures the element stays mounted and onDragEnd fires reliably.
+          tasks={byUser[u.id]}
           onOpen={onOpen}
           onAdd={() => onAddFor(u.id)}
           density={density}
@@ -435,7 +436,7 @@ function UserScreen({ user, tasks, onOpen, onAddFor, density, onMoveTask }) {
       <div className="board board--user">
         <Column 
           title="Needs review" icon="⚠" colId="flagged"
-          tasks={flagged.filter(t => !draggingTask || t.id !== draggingTask.id)}
+          tasks={flagged}
           onOpen={onOpen} density={density}
           dragOver={dragOverCol === 'flagged'}
           onDragOver={setDragOverCol}
@@ -451,7 +452,7 @@ function UserScreen({ user, tasks, onOpen, onAddFor, density, onMoveTask }) {
         />
         <Column 
           title="Open" icon="○" colId="open"
-          tasks={open.filter(t => !draggingTask || t.id !== draggingTask.id)}
+          tasks={open}
           onOpen={onOpen} density={density}
           dragOver={dragOverCol === 'open'}
           onDragOver={setDragOverCol}