Add GET /api/integrations/opensky/states: resolves the caller's OpenSky
cascade and returns trimmed aircraft state vectors (icao24, callsign,
country, lat/lng, heading, velocity, altitude, onGround) for their bbox.
Reuses the settings gates (global master / org / personal opt-in) and is
backed by a new Manager.InvokeWith that runs the plugin's states.bbox
action on a transient instance. Proxied through the Web App BFF.
DeviceMap now overlays these as rotatable plane markers (accent when
airborne, grey on ground) with tooltips; Dashboard polls every 30s while
Overview is visible and shows an aircraft count badge.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
