WaypointSidebar and DayBreakdown were calling useTranslation() without
the "planner" namespace, then using fully qualified keys like
"planner.multiDay.overnight". Fixed to use useTranslation("planner")
and drop the prefix from all t() calls.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- DayBreakdown: Collapsible day sections with per-day stats
- WaypointSidebar: Overnight toggle button (moon icon), day-grouped view
when any waypoint is marked overnight, route summary in header
- SessionView: Wire useDays() hook into sidebar via SidebarTabs
- i18n: Add multiDay keys for en + de (day labels, overnight, stats)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
