New DASH_SATS clock/lock-screen dashboard field, reading
LocationProvider::satellitesCount() (already used by the GPS Tools
panel, just not previously exposed as a dashboard option). Follows the
existing DASH_GPS pattern: always selectable, "--" when built without
GPS support. Added to both dashboard-render paths (HomeScreen's CLOCK
page inline loop and formatDashVal(), shared by the LOCK page).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>