Give the Fly App every remaining GO 4 flight mode and the missing settings

Intelligent modes: Point of Interest (orbit on the map, live radius and
speed), Follow Me (follows the phone), QuickShots on a boxed subject,
Course Lock / Home Lock, Tripod and Cinematic, a Free hyperlapse, and
Waypoints 2.0 for V2-only aircraft. ActiveTrack gains Spotlight Pro and
Circle. Every mode has a first-use tutorial and stops from the rail.
Waypoints can resume an interrupted mission, change cruise speed in
flight and check terrain clearance (Open-Meteo, on tap).

Settings: units, C1/C2 actions, dual-operator master/slave, HDMI/SDI
output, a link spectrum chart, Wi-Fi name and password, aircraft name,
video cache, battery warning history and pairing, non-smart cell
voltages. Calibration: compass interference meter, per-IMU calibration,
lens infinity focus and a first-manual-focus prompt. Also an RTK chip,
gimbal movement presets and motor tuning, Precision Takeoff gated on the
flight controller, and the precise GEO database's server version.

Built and unit/widget-tested only; nothing has flown yet.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Fly App/lib/ui/fly/bottom/telemetry_strip.dart

@@ -1,10 +1,13 @@
 import 'package:flutter/material.dart';
 
+import '../../../fly/fly_prefs.dart';
 import '../../../fly/hud_features.dart';
 import '../../../fly/state/aircraft_state.dart';
+import '../../../fly/units.dart';
 import '../hud_kit.dart';
 
-/// The bottom telemetry strip (plan P2): H · D · VS (with arrow) · HS · VPS.
+/// The bottom telemetry strip (plan P2): H · D · VS (with arrow) · HS · VPS,
+/// in metres or feet as Settings → General → Units says.
 class TelemetryStrip extends StatelessWidget {
   const TelemetryStrip({super.key, required this.aircraft});
 
@@ -13,21 +16,25 @@ class TelemetryStrip extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return ListenableBuilder(
-      listenable: aircraft,
+      listenable: Listenable.merge(<Listenable>[aircraft, FlyPrefs.units]),
       builder: (BuildContext context, _) {
         final AircraftState a = aircraft;
+        final UnitSystem u = FlyPrefs.units.value;
         final double? vs = a.verticalSpeed;
         // Under 0.1 m/s is hover noise; no arrow for it.
         final int dir = vs == null || vs.abs() < 0.1 ? 0 : vs.sign.toInt();
+        double? len(double? m) => m == null ? null : Units.lengthValue(m, u);
+        double? spd(double? ms) => ms == null ? null : Units.speedValue(ms, u);
+        final String l = Units.lengthUnit(u), s = Units.speedUnit(u);
         return GlassPill(
           height: 40,
           padding: const EdgeInsets.symmetric(horizontal: 12),
           child: Row(mainAxisSize: MainAxisSize.min, children: <Widget>[
-            _Field('H', fmtNum(a.altitude), 'm'),
-            _Field('D', fmtNum(a.homeDistance, digits: 0), 'm'),
-            _Field('VS', fmtNum(vs?.abs()), 'm/s', arrow: dir),
-            _Field('HS', fmtNum(a.horizontalSpeed), 'm/s'),
-            Requires(HudFeatures.vpsReadout, child: _Field('VPS', fmtNum(a.vpsHeight), 'm')),
+            _Field('H', fmtNum(len(a.altitude)), l),
+            _Field('D', fmtNum(len(a.homeDistance), digits: 0), l),
+            _Field('VS', fmtNum(spd(vs?.abs())), s, arrow: dir),
+            _Field('HS', fmtNum(spd(a.horizontalSpeed)), s),
+            Requires(HudFeatures.vpsReadout, child: _Field('VPS', fmtNum(len(a.vpsHeight)), l)),
           ]),
         );
       },