fix(ui): prevent TaskEditDialog from unmounting when opened (#395)

The edit button was calling onOpenChange(false) which triggered
setSelectedTask(null) in App.tsx, causing the entire TaskDetailModal
to unmount - including the TaskEditDialog that was just opened.

Fix: Remove the onOpenChange(false) call. The edit dialog now opens
on top of the parent modal using proper z-index stacking via Portal.

Reported by: Mitsu

Signed-off-by: Black Circle Sentinel <mludlow000@icloud.com>
Co-authored-by: Andy <119136210+AndyMik90@users.noreply.github.com>

apps/frontend/src/renderer/components/task-detail/TaskDetailModal.tsx

@@ -307,11 +307,7 @@ function TaskDetailModalContent({ open, task, onOpenChange, onSwitchToTerminals,
                     variant="ghost"
                     size="icon"
                     className="hover:bg-primary/10 hover:text-primary transition-colors"
-                    onClick={() => {
-                      state.setIsEditDialogOpen(true);
-                      // Hide parent modal while edit dialog is open to fix z-index stacking
-                      onOpenChange(false);
-                    }}
+                    onClick={() => state.setIsEditDialogOpen(true)}
                     disabled={state.isRunning && !state.isStuck}
                   >
                     <Pencil className="h-4 w-4" />
@@ -473,13 +469,7 @@ function TaskDetailModalContent({ open, task, onOpenChange, onSwitchToTerminals,
       <TaskEditDialog
         task={task}
         open={state.isEditDialogOpen}
-        onOpenChange={(open) => {
-          state.setIsEditDialogOpen(open);
-          // Reopen parent modal when edit dialog closes
-          if (!open) {
-            onOpenChange(true);
-          }
-        }}
+        onOpenChange={state.setIsEditDialogOpen}
       />
 
       {/* Delete Confirmation Dialog */}