Version 1.0.0

Changes since v0.4.8:
- Added the Textual task browser with priority-sorted tasks, filtering, selection, task creation, confirmations, note rendering, and keyboard shortcuts.
- Reworked task state as reserved active, paused, done, and archived tags, including transition-safe duration tracking, filtering, output, editor support, SQLite migration and backups.
- Added saved TUI filters, database refresh, focused-task restoration, archive controls, and targeted pane updates.
- Refined task navigation with circular Up and Down movement plus Home and End, compact rows, Unicode ellipses, colored tags, and expandable notes.
- Replaced separate note and tag editing with compact combined task creation and editing forms for description, tags, priority, and notes.
- Simplified context-sensitive footer shortcut visibility and updated TUI, CLI, migration, startup, and task coverage plus documentation.
- Added a live header status for active tasks with a bright-green, bold black display and elapsed duration.
- Added a paused-task header status with a yellow, bold black display and retained duration.
- Restored the normal header when idle and display the application name and version.
- Bumped the package version to 1.0.0.