Implements issue #179. Adds a Task Loop panel that imports hikari-tasks.json
files and automatically runs Claude Code through each task in sequence, one
per conversation tab. Includes Start/Pause/Stop/Resume controls, real-time
status indicators per task, and a StatusBar badge. WSL UNC paths from the
file picker are normalised to Unix paths at import time.
Adds a Changelog panel accessible from the nav menu. Fetches all
releases from the Gitea API on open and renders each entry with
version badge, date, pre-release tag, and markdown release notes.
Highlights the currently installed version with a pink "current" badge.
Consolidates 21 toolbar buttons into a single Menu trigger that
opens a scrollable dropdown with icon + label per item. Clicking
any item auto-closes the menu; backdrop click also closes it.
All panel state migrated to NavMenu; StatusBar trimmed ~480 lines.