Merge FB-07: fix Route Planner opening on Null Island

# Conflicts:
#	docs/feedback/FB-07-route-planner-null-island.md

lib/src/ui/routes/route_planner_screen.dart

@@ -119,6 +119,16 @@ class _RoutePlannerScreenState extends ConsumerState<RoutePlannerScreen>
     final units = ref.watch(unitSystemProvider);
     final repo = ref.read(routePlanRepositoryProvider);
 
+    // FB-07: a brand-new route (or one with <2 pins) should open on the rider's real
+    // location rather than Null Island (0, 0). This mirrors ShellScaffold's own use of
+    // ambientPositionProvider (lib/src/ui/app_shell.dart). A missing fix (permission
+    // denied, service disabled, or not arrived yet) falls back to (0, 0) immediately --
+    // it must not block the map the way waypointsAsync is blocked above.
+    final ambientFix = ref.watch(ambientPositionProvider).valueOrNull;
+    final ambientPosition = ambientFix == null
+        ? null
+        : ll.LatLng(ambientFix.latitude, ambientFix.longitude);
+
     // Mirrors waypointsAsync's own guard below: `.valueOrNull` alone can't tell "still
     // loading" apart from "genuinely doesn't exist" -- both collapse to null. On a
     // brand-new route (fresh navigation right after `repo.createRoutePlan`), this
@@ -168,7 +178,7 @@ class _RoutePlannerScreenState extends ConsumerState<RoutePlannerScreen>
                       options: MapOptions(
                         initialCameraFit: _initialFit(waypoints),
                         initialCenter: waypoints.isEmpty
-                            ? const ll.LatLng(0, 0)
+                            ? (ambientPosition ?? const ll.LatLng(0, 0))
                             : ll.LatLng(waypoints.first.latitude, waypoints.first.longitude),
                         initialZoom: waypoints.length <= 1 ? ambientZoom : maxTileZoom - 3,
                         maxZoom: maxTileZoom,