1. CarPlay widget taps could never launch Maps — FuelBoard is not a
CarPlay app, and Apple only lets a widget launch its own app in
CarPlay when that app is CarPlay-enabled. Marked the widget as a
disfavored CarPlay location (iOS 26+; no-op below): read-only in
the car, no dead tap. Header comment updated to match reality.
2. Widgets now track the user's location: timeline refresh 15m -> 5m,
and the app's location manager reloads all widget timelines after
every significant move (250m filter, throttled to 60s), so the
widget re-orders around the new position while driving instead of
waiting for the next tick.
3. Debug 'Cheapest in range' no longer shows the ALERT prediction
(alertsFuel + alert radius — a different pool by design). It now
mirrors the app list exactly: the TOP-badge station for the
selected fuel within the stationLimit radius (new DebugAppCheapest
computed in ContentView, passed to Settings). Alert-prediction
cheapest kept as fallback when the app view hasn't resolved.