🗂️ refactor: implement Phase 2 folder-pattern compliance

- Move dialogs to src/components/dialogs/ folder:
  - delete-session-dialog.tsx
  - delete-all-archived-sessions-dialog.tsx
  - new-project-modal.tsx
  - workspace-picker-modal.tsx
- Update all imports to reference new dialog locations
- Create barrel export (index.ts) for board-view/components/kanban-card/
- Create barrel exports (index.ts) for all 11 settings-view subfolders:
  - api-keys/, api-keys/hooks/, appearance/, audio/, cli-status/
  - components/, config/, danger-zone/, feature-defaults/
  - keyboard-shortcuts/, shared/

This is Phase 2 of folder-pattern.md compliance: organizing dialogs
and establishing consistent barrel export patterns across all view subfolders.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

apps/ui/src/components/dialogs/index.ts

@@ -1,2 +1,6 @@
 export { BoardBackgroundModal } from './board-background-modal';
+export { DeleteAllArchivedSessionsDialog } from './delete-all-archived-sessions-dialog';
+export { DeleteSessionDialog } from './delete-session-dialog';
 export { FileBrowserDialog } from './file-browser-dialog';
+export { NewProjectModal } from './new-project-modal';
+export { WorkspacePickerModal } from './workspace-picker-modal';