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/server/src/services/feature-loader.ts

@@ -378,6 +378,7 @@ export class FeatureLoader {
       description: featureData.description || '',
       ...featureData,
       id: featureId,
+      createdAt: featureData.createdAt || new Date().toISOString(),
       imagePaths: migratedImagePaths,
       descriptionHistory: initialHistory,
     };