Fix satellite ground track to show full orbit

- Fix property name mismatch: backend returns 'track' but index.html
  expected 'orbitTrack'
- Start position updates when a pass is selected (was never called)
- Fetch position immediately on pass selection for instant orbit display
- Dashboard: always show full orbit track, not just when no pass selected

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

templates/index.html

@@ -8318,6 +8318,10 @@
             updateGroundTrack(selectedPass);
             // Update countdown to show selected pass
             updateSatelliteCountdown();
+            // Start real-time position updates for full orbit track
+            startSatellitePositionUpdates();
+            // Fetch position immediately
+            updateRealTimePosition();
         }
 
         // Ground Track Map
@@ -8475,10 +8479,12 @@
                     }
 
                     // Draw full orbit track from position endpoint
-                    if (pos.orbitTrack && pos.orbitTrack.length > 0 && groundTrackMap) {
+                    // Backend returns 'track' property
+                    const orbitData = pos.track || pos.orbitTrack;
+                    if (orbitData && orbitData.length > 0 && groundTrackMap) {
                         // Split into past and future, handling antimeridian crossings
-                        const pastPoints = pos.orbitTrack.filter(p => p.past);
-                        const futurePoints = pos.orbitTrack.filter(p => !p.past);
+                        const pastPoints = orbitData.filter(p => p.past);
+                        const futurePoints = orbitData.filter(p => !p.past);
 
                         // Helper to split coords at antimeridian crossings
                         function splitAtAntimeridian(points) {

templates/satellite_dashboard.html

@@ -1385,9 +1385,8 @@
                         satMarker = L.marker([pos.lat, pos.lon], { icon: satIcon }).addTo(groundMap);
                     }
 
-                    // Only update orbit track if no pass is selected
-                    // When a pass is selected, keep showing that pass's ground track
-                    if (selectedPass === null && pos.track && groundMap) {
+                    // Always show full orbit track from position data
+                    if (pos.track && groundMap) {
                         if (orbitTrack) groundMap.removeLayer(orbitTrack);
                         if (trackLine) groundMap.removeLayer(trackLine);
                         trackLine = null;