feat(qgis): add editable traffic signal assemblies

scripts/lib/scene-layers.js

@@ -97,6 +97,17 @@ const SCENE_LAYERS = [
   },
 ];
 
+// Editable control layers share the GeoPackage/QGIS lifecycle but never enter
+// the merged render scene or its draw order.
+const AUXILIARY_EDIT_LAYERS = [
+  {
+    id: "traffic_signal_assemblies",
+    file: "traffic_signal_assemblies.geojson",
+    title: "traffic signal assemblies",
+    geometry: "Point",
+  },
+];
+
 const SCENE_FILE = "osm2streets_scene.geojson";
 const SCENE_STYLE_FILE = "osm2streets_scene_style.json";
 
@@ -155,6 +166,7 @@ function qgisRgba(hex, alpha = 255) {
 
 module.exports = {
   SCENE_LAYERS,
+  AUXILIARY_EDIT_LAYERS,
   SCENE_FILE,
   SCENE_STYLE_FILE,
   layerFile,