Fix orphaned features when deleting worktrees (#820)

* Changes from fix/orphaned-features

* fix: Handle feature migration failures and improve UI accessibility

* feat: Add event emission for worktree deletion and feature migration

* fix: Handle OpenCode model errors and prevent duplicate model IDs

* feat: Add summary dialog and async verify with loading state

* fix: Add type attributes to buttons and improve OpenCode model selection

* fix: Add null checks for onVerify callback and opencode model selection

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

@@ -268,6 +268,7 @@ export function useBoardActions({
         status: initialStatus,
         branchName: finalBranchName,
         dependencies: featureData.dependencies || [],
+        createdAt: new Date().toISOString(),
         ...(initialStatus === 'in_progress' ? { startedAt: new Date().toISOString() } : {}),
       };
       const createdFeature = addFeature(newFeatureData);