Version 1.1.0

Changes since v1.0.3:
- Refine the TUI task-row layout, priority markers, display-width alignment, and priority-only ordering.
- Use checkmark and archive markers in place of numeric priority for done and archived tasks, and remove status icons from terminal listings.
- Make archived an independent convenience tag with no lifecycle, timing, duration, or identifier side effects; done and archived can coexist.
- Add schema version 3 migration to repair historical zero-ID archived tasks while retaining stable IDs for new and legacy migrations.
- Make archive and done CLI commands toggle their respective tags and remove the todo CLI command.
- Centralize CLI/TUI filtering, status matching, task form parsing, persistence operations, and bulk CLI task actions.
- Make task saves atomic and document updated CLI/TUI behavior.