fix: close California play and asset acceptance gaps

src/aircraft/asset.ts

@@ -89,7 +89,11 @@ function wingGeometry(span: number, rootChord: number, tipChord: number): THREE.
   ]);
   const geometry = new THREE.BufferGeometry();
   geometry.setAttribute("position", new THREE.BufferAttribute(vertices, 3));
-  geometry.setIndex([0, 1, 2, 0, 2, 3, 0, 3, 4, 0, 4, 5]);
+  // Counter-clockwise from above. The reverse winding points the generated
+  // normals down, so Three.js culls the whole wing from the chase/flyover view
+  // while still drawing its shadow — leaving only two apparently floating
+  // ailerons around the fuselage.
+  geometry.setIndex([0, 2, 1, 0, 3, 2, 0, 4, 3, 0, 5, 4]);
   geometry.computeVertexNormals();
   return geometry;
 }
@@ -106,9 +110,14 @@ function addFan(root: THREE.Group, x: number, materials: ElectricAircraftMateria
   hub.rotation.x = Math.PI / 2;
   fan.add(hub);
   for (let index = 0; index < 5; index += 1) {
+    const angle = index * TWO_PI / 5;
     const blade = mesh(new THREE.BoxGeometry(0.07, 0.68, 0.025), materials.dark, `${fan.name}:blade-${index}`);
-    blade.position.y = 0.3;
-    blade.rotation.z = index * TWO_PI / 5;
+    // Place every blade on its own radial spoke. Rotating five differently
+    // oriented rectangles around the same off-centre point makes a lopsided
+    // paddle; matching centre and local +Y to this angle produces a balanced
+    // rotor whose group can spin continuously around the hub.
+    blade.position.set(-Math.sin(angle) * 0.3, Math.cos(angle) * 0.3, 0);
+    blade.rotation.z = angle;
     fan.add(blade);
   }
   root.add(fan);
@@ -122,6 +131,9 @@ export function buildElectricAircraft(options: ElectricAircraftBuildOptions = {}
   const materials = options.materials ?? createElectricAircraftMaterials(options.bodyColor);
   const root = new THREE.Group();
   root.name = "electric-aircraft";
+  root.userData.kind = "aircraft";
+  root.userData.aircraftModel = "electric-vtail";
+  root.userData.forwardAxis = "-Z";
 
   const fuselage = mesh(new THREE.CapsuleGeometry(0.66, 5.9, 8, 16), materials.body, "electric-aircraft:fuselage");
   fuselage.rotation.x = Math.PI / 2;
@@ -144,7 +156,9 @@ export function buildElectricAircraft(options: ElectricAircraftBuildOptions = {}
   leftAileron.name = "electric-aircraft.aileron-left";
   rightAileron.name = "electric-aircraft.aileron-right";
   for (const [joint, x] of [[leftAileron, -4.2], [rightAileron, 4.2]] as const) {
-    joint.position.set(x, 0.48, 0.72);
+    // On the tapered wing's trailing edge. At 0.72 the outer leading corner
+    // sat behind the tip chord and the bright surface read as a floating bar.
+    joint.position.set(x, 0.48, 0.58);
     joint.add(mesh(new THREE.BoxGeometry(2.15, 0.08, 0.45), materials.accent, `${joint.name}:surface`));
     root.add(joint);
   }

src/aircraft/controller.ts

@@ -168,15 +168,23 @@ function checkedEnvelope(value: CaliforniaFlightEnvelope | undefined): Californi
   return envelope;
 }
 
-function checkedRoute(route: readonly AircraftWaypoint[] | undefined): readonly AircraftWaypoint[] {
+function checkedRoute(
+  route: readonly AircraftWaypoint[] | undefined,
+  envelope: CaliforniaFlightEnvelope,
+): readonly AircraftWaypoint[] {
   if (!route) return [];
   const ids = new Set<string>();
   return route.map((point) => {
     if (
       typeof point.id !== "string" || point.id.length === 0 || ids.has(point.id) ||
       !Number.isFinite(point.lat) || !Number.isFinite(point.lng) ||
-      !Number.isFinite(point.altitudeM)
-    ) throw new RangeError("aircraft route waypoints must be finite with unique ids");
+      !Number.isFinite(point.altitudeM) ||
+      point.lat < envelope.minLat || point.lat > envelope.maxLat ||
+      point.lng < envelope.minLng || point.lng > envelope.maxLng ||
+      point.altitudeM < envelope.minAltitudeM || point.altitudeM > envelope.maxAltitudeM
+    ) throw new RangeError(
+      "aircraft route waypoints must be finite, unique, and inside the flight envelope",
+    );
     ids.add(point.id);
     return { ...point };
   });
@@ -200,7 +208,7 @@ function resolveOptions(value: AircraftControllerOptions): ResolvedOptions {
     initialHeadingDeg: wrapDegrees(finiteOr(value.initialHeadingDeg, 320)),
     initialSpeedMps: clamp(finiteOr(value.initialSpeedMps, 55), minimumSpeedMps, maximumSpeedMps),
     mode: value.mode === "manual" ? "manual" : "assisted",
-    route: checkedRoute(value.route),
+    route: checkedRoute(value.route, envelope),
     envelope,
     minimumSpeedMps,
     maximumSpeedMps,