Auto-fetch wind, drop manual fetch/validate buttons, fix it in fly mode

Redesigns the waypoint list panel to match the drone-status/missions
panels: no title bar, close button floats over the tab row, tabs get
more vertical padding.

Removes the "Fetch wind" and "Validate" header buttons along with the
now-fully-orphaned WindValidatePanel screen and its WindService
support code (fetchValidation, WindValidationResult and friends) -
nothing else referenced them.

Wind is now fetched automatically instead: HeaderWindNotifier gains
ensurePerWaypointWind(), called when the waypoint list panel opens and
when the header pill's per-waypoint toggle switches on. A lat/lon
signature of the waypoint list tracks whether the fetched data is
still current, so a ref.listen(currentMissionProvider) in the same
notifier refetches only when the list itself changes (position added/
removed/moved) - not on every altitude/speed edit. Waypoints that
already carry wind data (e.g. loaded from a saved mission) short-
circuit the check instead of re-fetching pointlessly.

Also wires per-waypoint wind markers into the fly-mode map, which
never had them (plan_screen.dart built windMarkers; fly_screen.dart
just never did) - the reported "doesn't work in fly mode" bug.
windMarkerWidth() moved from a plan_screen.dart-private method to
wind_marker_pill.dart so both screens can share it.

Test containers in widget_test.dart now override windServiceProvider
with a MockClient so the new auto-fetch trigger can't reach the real
network during tests.

app/lib/ui/widgets/waypoint_list_panel.dart

@@ -15,7 +15,6 @@ import '../providers/wind_provider.dart';
 import 'full_value_chart.dart';
 import 'waypoint_chip.dart';
 import 'wind_arrow_icon.dart';
-import 'wind_validate_panel.dart';
 
 /// Welcher Tab beim Oeffnen des Panels aktiv ist (Doku 3.6/3.10) - public,
 /// damit Aufrufer wie die Warnungsliste direkt auf Altitude/Speed
@@ -86,6 +85,12 @@ class _WaypointListPanelState extends ConsumerState<WaypointListPanel> {
   void initState() {
     super.initState();
     _tab = widget.initialTab;
+    // Wind pro Wegpunkt automatisch abrufen, sobald das Panel geoeffnet
+    // wird (Doku: "wind automatisch abrufen, wenn das menue geoeffnet
+    // wird") - ersetzt den vorherigen manuellen "Fetch wind"-Knopf.
+    // ensurePerWaypointWind() selbst entscheidet, ob dafuer ueberhaupt ein
+    // Request noetig ist (siehe dortige Doku).
+    ref.read(headerWindProvider.notifier).ensurePerWaypointWind();
     WidgetsBinding.instance.addPostFrameCallback((_) {
       _scrollToActive();
       // Startet das Panel direkt auf dem Altitude-Tab (z.B. aus der
@@ -120,39 +125,6 @@ class _WaypointListPanelState extends ConsumerState<WaypointListPanel> {
     super.dispose();
   }
 
-  /// Holt Wind fuer alle Wegpunkte gebuendelt (Doku 3.8, HTML-Demonstrator:
-  /// fetchWindForWaypoints()) und schreibt das Ergebnis komplett zurueck.
-  Future<void> _onFetchWind() async {
-    final waypoints = ref.read(currentMissionProvider);
-    final messenger = ScaffoldMessenger.of(context);
-    if (waypoints.isEmpty) {
-      messenger.showSnackBar(
-        const SnackBar(content: Text('No waypoints to fetch wind for')),
-      );
-      return;
-    }
-    messenger.showSnackBar(const SnackBar(content: Text('Fetching wind…')));
-    final updated =
-        await ref.read(windServiceProvider).fetchWindForWaypoints(waypoints);
-    ref.read(currentMissionProvider.notifier).replaceAll(updated);
-    messenger.showSnackBar(const SnackBar(content: Text('Wind data updated')));
-  }
-
-  /// Oeffnet das Wind-Validierungspanel fuer den aktuellen Referenzort
-  /// (erster Wegpunkt, sonst Kartenzentrum - Doku 3.8).
-  void _onValidateWind() {
-    final location = windReferenceLocation(ref);
-    if (location == null) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(content: Text('No location available yet')),
-      );
-      return;
-    }
-    Navigator.of(context).push(MaterialPageRoute(
-      builder: (_) => WindValidatePanel(lat: location.$1, lon: location.$2),
-    ));
-  }
-
   /// Zentriert die Liste auf den aktuell aktiven Wegpunkt (Doku 3.6: das
   /// Panel oeffnet sich beim Editieren eines Wegpunkts ueber das
   /// Halo-Menue - ohne Auto-Scroll waere er bei laengeren Missionen nicht
@@ -186,83 +158,71 @@ class _WaypointListPanelState extends ConsumerState<WaypointListPanel> {
     return Material(
       color: const Color(0xEB080808),
       child: SafeArea(
-        child: Column(
+        // Kein eigener Titel-Header mehr (Doku: "nach dem neuen
+        // Designschema anpassen und ueberschrift entfernen", analog Drone-
+        // Status- und Missions-/Drohnen-Panel) - der Schliessen-Knopf
+        // schwebt stattdessen ueber der Tab-Zeile, die dafuer rechts Platz
+        // frei laesst (siehe unten).
+        child: Stack(
           children: [
-            Padding(
-              padding: const EdgeInsets.fromLTRB(16, 12, 8, 12),
-              child: Row(
-                children: [
-                  const Expanded(
-                    child: Text(
-                      'Waypoints',
-                      style: TextStyle(
-                        color: Colors.white,
-                        fontSize: 20,
-                        fontWeight: FontWeight.w700,
-                      ),
-                    ),
-                  ),
-                  _HeaderActionButton(
-                    icon: Icons.air,
-                    label: 'Fetch wind',
-                    tint: const Color(0xFF4D9DFF),
-                    onTap: _onFetchWind,
-                  ),
-                  const SizedBox(width: 8),
-                  _HeaderActionButton(
-                    icon: Icons.rule,
-                    label: 'Validate',
-                    tint: const Color(0xFFC8A04D),
-                    onTap: _onValidateWind,
-                  ),
-                  IconButton(
-                    onPressed: widget.onClose,
-                    icon: const Icon(Icons.close, color: Colors.white),
-                  ),
-                ],
-              ),
-            ),
-            Row(
+            Column(
               children: [
-                _tabButton('List', PanelTab.list),
-                _tabButton('Altitude', PanelTab.altitude),
-                _tabButton('Speed', PanelTab.speed),
+                Padding(
+                  // Rechts Platz fuer den schwebenden Schliessen-Knopf,
+                  // damit "Speed" nicht darunter verschwindet.
+                  padding: const EdgeInsets.only(right: 48),
+                  child: Row(
+                    children: [
+                      _tabButton('List', PanelTab.list),
+                      _tabButton('Altitude', PanelTab.altitude),
+                      _tabButton('Speed', PanelTab.speed),
+                    ],
+                  ),
+                ),
+                const Divider(color: Colors.white24, height: 1),
+                Expanded(
+                  child: switch (_tab) {
+                    PanelTab.list => _listTab(waypoints, routeGeometry, droneProfile),
+                    PanelTab.altitude => _chartTab(
+                        waypoints,
+                        routeGeometry,
+                        values: [for (final w in waypoints) w.altitudeM],
+                        min: DefaultDroneProfile.altMin,
+                        max: droneProfile.maxAltitudeM,
+                        step: DefaultDroneProfile.altStep,
+                        pxPerUnit: 5,
+                        unit: ' m',
+                        onChanged: widget.onAltitudeChanged,
+                        terrainPoints: terrainState.profile?.points,
+                        terrainDangerRanges: terrainState.profile != null
+                            ? terrainDangerRanges(waypoints, terrainState.profile!)
+                            : null,
+                        terrainLoading: terrainState.loading,
+                      ),
+                    PanelTab.speed => _chartTab(
+                        waypoints,
+                        routeGeometry,
+                        values: [for (final w in waypoints) w.speedMs],
+                        min: droneProfile.minSpeed,
+                        max: droneProfile.maxSpeed,
+                        step: DefaultDroneProfile.speedStep,
+                        pxPerUnit: 22,
+                        unit: ' m/s',
+                        onChanged: widget.onSpeedChanged,
+                        legWind: computeLegWind(waypoints),
+                        groundSpeeds: computeGroundSpeeds(waypoints),
+                      ),
+                  },
+                ),
               ],
             ),
-            const Divider(color: Colors.white24, height: 1),
-            Expanded(
-              child: switch (_tab) {
-                PanelTab.list => _listTab(waypoints, routeGeometry, droneProfile),
-                PanelTab.altitude => _chartTab(
-                    waypoints,
-                    routeGeometry,
-                    values: [for (final w in waypoints) w.altitudeM],
-                    min: DefaultDroneProfile.altMin,
-                    max: droneProfile.maxAltitudeM,
-                    step: DefaultDroneProfile.altStep,
-                    pxPerUnit: 5,
-                    unit: ' m',
-                    onChanged: widget.onAltitudeChanged,
-                    terrainPoints: terrainState.profile?.points,
-                    terrainDangerRanges: terrainState.profile != null
-                        ? terrainDangerRanges(waypoints, terrainState.profile!)
-                        : null,
-                    terrainLoading: terrainState.loading,
-                  ),
-                PanelTab.speed => _chartTab(
-                    waypoints,
-                    routeGeometry,
-                    values: [for (final w in waypoints) w.speedMs],
-                    min: droneProfile.minSpeed,
-                    max: droneProfile.maxSpeed,
-                    step: DefaultDroneProfile.speedStep,
-                    pxPerUnit: 22,
-                    unit: ' m/s',
-                    onChanged: widget.onSpeedChanged,
-                    legWind: computeLegWind(waypoints),
-                    groundSpeeds: computeGroundSpeeds(waypoints),
-                  ),
-              },
+            Positioned(
+              top: 4,
+              right: 4,
+              child: IconButton(
+                onPressed: widget.onClose,
+                icon: const Icon(Icons.close, color: Colors.white),
+              ),
             ),
           ],
         ),
@@ -286,7 +246,9 @@ class _WaypointListPanelState extends ConsumerState<WaypointListPanel> {
           }
         },
         child: Container(
-          padding: const EdgeInsets.symmetric(vertical: 10),
+          // 18 statt vorher 10 (analog Drone-Status-/Missions-Panel: Tabs
+          // wirkten seit dem Wegfall der Titelzeile zu gequetscht).
+          padding: const EdgeInsets.symmetric(vertical: 18),
           decoration: BoxDecoration(
             border: Border(
               bottom: BorderSide(
@@ -542,49 +504,3 @@ class _WaypointListPanelState extends ConsumerState<WaypointListPanel> {
         _ => '—',
       };
 }
-
-/// Kleiner getoenter Aktions-Button im Panel-Header (HTML-Demonstrator:
-/// #windFetchBtn/#windValidateBtn).
-class _HeaderActionButton extends StatelessWidget {
-  const _HeaderActionButton({
-    required this.icon,
-    required this.label,
-    required this.tint,
-    required this.onTap,
-  });
-
-  final IconData icon;
-  final String label;
-  final Color tint;
-  final VoidCallback onTap;
-
-  @override
-  Widget build(BuildContext context) {
-    return GestureDetector(
-      onTap: onTap,
-      child: Container(
-        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
-        decoration: BoxDecoration(
-          color: tint.withValues(alpha: 0.18),
-          borderRadius: BorderRadius.circular(16),
-          border: Border.all(color: tint.withValues(alpha: 0.5)),
-        ),
-        child: Row(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Icon(icon, size: 15, color: Colors.white),
-            const SizedBox(width: 6),
-            Text(
-              label,
-              style: const TextStyle(
-                color: Colors.white,
-                fontSize: 13,
-                fontWeight: FontWeight.w600,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}

app/lib/ui/widgets/wind_marker_pill.dart

@@ -2,6 +2,20 @@ import 'package:flutter/material.dart';
 
 import 'wind_arrow_icon.dart';
 
+/// Breite des Marker-Rahmens fuer [WindMarkerPill] bei gegebener
+/// Windgeschwindigkeit - geteilt zwischen Plan- und Fly-Modus, die beide
+/// eigene Wind-Marker auf der Karte platzieren (MissionMap.windMarkers).
+/// Haengt von der Ziffernzahl der gerundeten Geschwindigkeit ab, damit z.B.
+/// "12 m/s" genauso wenig abgeschnitten wird wie "5 m/s".
+double windMarkerWidth(double speedMs) {
+  final digits = speedMs.round().abs().toString().length;
+  // +1px Puffer: MarkerLayer rendert ueber eine eigene Transform-/
+  // OverflowBox-Kette, die im echten Baum minimal (< 1px) anders rundet als
+  // eine isolierte Messung - ohne Puffer fuehrte das zu einem
+  // 0.25px-Overflow.
+  return 81.0 + digits * 11.0;
+}
+
 /// Kleine Wind-Anzeige direkt an einem Wegpunkt auf der Karte (HTML-
 /// Demonstrator: divIcon in redrawMapLayers(), sichtbar wenn
 /// showPerWaypointWind aktiv ist und fuer den Wegpunkt Wind geladen wurde).

app/lib/ui/widgets/wind_validate_panel.dart

@@ -1,152 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-
-import '../../services/wind/wind_service.dart';
-import '../providers/wind_provider.dart';
-
-/// Zeigt die Rohdaten hinter dem interpolierten Wind an einem Ort:
-/// gemessene Werte je fester Nabenhoehe (inkl. Boeen) und je Druckflaeche,
-/// sowie das daraus interpolierte Ergebnis auf 120 m AGL (Doku 3.8/4.9:
-/// Boeen nur hier, nicht in der Wegpunktanzeige). Fullscreen-Route wie
-/// WaypointListPanel (HTML-Demonstrator: #windValidatePanel, ebenfalls
-/// .panel).
-class WindValidatePanel extends ConsumerStatefulWidget {
-  const WindValidatePanel({super.key, required this.lat, required this.lon});
-
-  final double lat;
-  final double lon;
-
-  @override
-  ConsumerState<WindValidatePanel> createState() => _WindValidatePanelState();
-}
-
-class _WindValidatePanelState extends ConsumerState<WindValidatePanel> {
-  late final Future<WindValidationResult> _future;
-
-  @override
-  void initState() {
-    super.initState();
-    _future = ref
-        .read(windServiceProvider)
-        .fetchValidation(widget.lat, widget.lon);
-  }
-
-  static const _labelStyle = TextStyle(color: Colors.white, fontSize: 14, height: 1.6);
-  static const _errorStyle = TextStyle(color: Color(0xFFFF8A7A), fontSize: 14, height: 1.6);
-  static const _excludedStyle = TextStyle(
-    color: Colors.white38,
-    fontSize: 14,
-    height: 1.6,
-    decoration: TextDecoration.lineThrough,
-  );
-
-  @override
-  Widget build(BuildContext context) {
-    return Material(
-      color: const Color(0xEB080808),
-      child: SafeArea(
-        child: Column(
-          children: [
-            Padding(
-              padding: const EdgeInsets.fromLTRB(16, 12, 8, 12),
-              child: Row(
-                children: [
-                  const Expanded(
-                    child: Text(
-                      'Wind Validation',
-                      style: TextStyle(
-                        color: Colors.white,
-                        fontSize: 20,
-                        fontWeight: FontWeight.w700,
-                      ),
-                    ),
-                  ),
-                  IconButton(
-                    onPressed: () => Navigator.of(context).pop(),
-                    icon: const Icon(Icons.close, color: Colors.white),
-                  ),
-                ],
-              ),
-            ),
-            const Divider(color: Colors.white24, height: 1),
-            Expanded(
-              child: FutureBuilder<WindValidationResult>(
-                future: _future,
-                builder: (context, snapshot) {
-                  if (!snapshot.hasData) {
-                    return const Center(
-                      child: CircularProgressIndicator(color: Color(0xFF4D9DFF)),
-                    );
-                  }
-                  return _body(snapshot.data!);
-                },
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _body(WindValidationResult result) {
-    return ListView(
-      padding: const EdgeInsets.all(16),
-      children: [
-        Text(
-          'Location: ${result.lat.toStringAsFixed(5)}, ${result.lon.toStringAsFixed(5)} '
-          '· ground elevation ${result.elevationM.round()} m ASL',
-          style: _labelStyle,
-        ),
-        const SizedBox(height: 12),
-        const Text('Fixed hub heights', style: TextStyle(color: Colors.white, fontWeight: FontWeight.w700, fontSize: 15)),
-        const SizedBox(height: 4),
-        if (result.fixedRequestFailed)
-          const Text('Request failed', style: _errorStyle)
-        else ...[
-          for (final r in result.fixedReadings)
-            Text(
-              '${r.heightAglM} m AGL: '
-              '${r.speedMs != null ? '${r.speedMs!.toStringAsFixed(1)} m/s' : 'n/a'}'
-              '${r.dirFromDeg != null ? ', ${r.dirFromDeg!.round()}°' : ''}',
-              style: _labelStyle,
-            ),
-          Text(
-            'Gusts (10 m AGL): ${result.gustMs != null ? '${result.gustMs!.toStringAsFixed(1)} m/s' : 'n/a'}',
-            style: _labelStyle,
-          ),
-        ],
-        const SizedBox(height: 16),
-        const Text('Pressure levels', style: TextStyle(color: Colors.white, fontWeight: FontWeight.w700, fontSize: 15)),
-        const Text(
-          'discarded if below ground or incomplete',
-          style: TextStyle(color: Colors.white38, fontSize: 12),
-        ),
-        const SizedBox(height: 4),
-        if (result.pressureRequestFailed)
-          const Text('Request failed', style: _errorStyle)
-        else
-          for (final r in result.pressureReadings)
-            Text(
-              '${r.pressureHpa} hPa: '
-              '${r.heightAmslM != null ? '${r.heightAmslM!.round()} m ASL' : '?'}, '
-              '${r.speedMs != null ? '${r.speedMs!.toStringAsFixed(1)} m/s' : 'n/a'}'
-              '${r.excluded ? (r.heightAmslM != null && r.heightAmslM! < result.elevationM ? ' (below ground, excluded)' : ' (incomplete, excluded)') : ''}',
-              style: r.excluded ? _excludedStyle : _labelStyle,
-            ),
-        const SizedBox(height: 16),
-        Container(
-          padding: const EdgeInsets.only(top: 12),
-          decoration: const BoxDecoration(
-            border: Border(top: BorderSide(color: Colors.white24)),
-          ),
-          child: Text(
-            'Interpolated & referenced at 120 m AGL '
-            '(= ${(result.elevationM + 120).round()} m ASL, using pressure levels + fixed heights combined): '
-            '${result.interpolatedAt120 != null ? '${result.interpolatedAt120!.speedMs.toStringAsFixed(1)} m/s, ${result.interpolatedAt120!.dirFromDeg.round()}°' : 'n/a (missing data at boundary level)'}',
-            style: const TextStyle(color: Colors.white, fontWeight: FontWeight.w600, fontSize: 14, height: 1.5),
-          ),
-        ),
-      ],
-    );
-  }
-}