- Add Token class and token() helper in template package for JSX token
support
- Refactor insertFragmentWithConflictResolution to
detectFragmentTokenConflicts
- Refactor insertPageWithConflictResolution to detectPageTokenConflicts
- Move dialog display to callers for better testability
- Add conflictResolution parameter to page-utils
- Add comprehensive tests for token functionality and conflict detection
- Fix bug: remove .values() call on arrays in breakpoint handling