disabled auto connect when switching to fly mode and no disconnect when leavin fly mode, race condition fix for connectionType ( now telemetry not working anymore), UI optimizations: centered speed and alt, zoom to mission uses full screen

app/lib/ui/screens/fly/fly_screen.dart

@@ -120,6 +120,14 @@ class FlyScreen extends ConsumerWidget {
       MediaQuery.of(context).padding.left,
       MediaQuery.of(context).padding.right,
     );
+    // Gleiche Reservierung fuer die Fusszeile wie die Rad-Readouts im
+    // Plan-Modus (PlanScreen: wheelBottomInset), damit die Alt/Speed-
+    // Anzeige zwischen Kopf- und Fusszeile vertikal zentriert erscheint,
+    // statt am Kartenrand zu kleben.
+    final footerBottomInset = math.max(
+      MediaQuery.of(context).size.height * 0.06,
+      124.0,
+    );
     final terrainProfile = ref.watch(terrainProvider).profile;
     final warnings = computeMissionWarnings(
       waypoints: waypoints,
@@ -179,13 +187,15 @@ class FlyScreen extends ConsumerWidget {
         // Rad-Widget (curAlt/curSpeed) gibt, dessen Wert sinnvoll waere.
         Positioned(
           top: 56,
+          bottom: footerBottomInset,
           left: 14 + safeEdgeInset,
-          child: _liveReadout('Alt', telemetry?.altitudeM, 'm'),
+          child: Center(child: _liveReadout('Alt', telemetry?.altitudeM, 'm')),
         ),
         Positioned(
           top: 56,
+          bottom: footerBottomInset,
           right: 14 + safeEdgeInset,
-          child: _liveReadout('Speed', telemetry?.speedMs, 'm/s'),
+          child: Center(child: _liveReadout('Speed', telemetry?.speedMs, 'm/s')),
         ),
         Positioned(
           left: 0,