Replace hardcoded L.map() + CartoCD dark tile layer with MapUtils.init()
and add tactical overlays. Adds test verifying the cartocdn URL is gone.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace custom createFallbackGridLayer/upgradeRadarTilesFromSettings with
MapUtils.init(), add range ring + reticle + HUD panel overlays via
MapUtils.addTacticalOverlays(), and wire updateCount/updateReticle into
the SSE aircraft handler and drawRangeRings.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>