Add bison model to default editor palette and object catalog

scripts/editor/object_catalog.gd

@@ -48,11 +48,21 @@ func is_loaded() -> bool:
 func resolve(id: String) -> Dictionary:
 	if not _loaded:
 		return {}
-	return _catalog.get(id, {})
+	if _catalog.has(id):
+		return _catalog[id]
+	if (id.contains("bizon") or id.contains("bison")) and _catalog.has("bison"):
+		return _catalog["bison"]
+	return {}
 
 
 func has_object(id: String) -> bool:
-	return _loaded and _catalog.has(id)
+	if not _loaded:
+		return false
+	if _catalog.has(id):
+		return true
+	if (id.contains("bizon") or id.contains("bison")) and _catalog.has("bison"):
+		return true
+	return false
 
 
 func get_all_ids() -> Array[String]:

scripts/editor/ui/palette_panel.gd

@@ -115,6 +115,8 @@ func _setup_import_ui() -> void:
 	sample_option.set_item_metadata(4, {"path": "res://assets/props/buffalo_chip_coin.glb", "name": "Buffalo Chip Coin"})
 	sample_option.add_item("Small Crate", 5)
 	sample_option.set_item_metadata(5, {"path": "res://assets/props/crate_small.glb", "name": "Small Crate"})
+	sample_option.add_item("Bison", 6)
+	sample_option.set_item_metadata(6, {"path": "res://assets/props/bison.glb", "name": "Bison"})
 	sample_option.size_flags_horizontal = Control.SIZE_EXPAND_FILL
 	sample_option.item_selected.connect(func(idx: int):
 		if idx > 0:

scripts/smoke_test_bison_model.gd

@@ -0,0 +1,37 @@
+extends SceneTree
+## Test loading and instantiating bison.glb prop
+
+func _init() -> void:
+	print("=== Smoke Test: Bison Model ===")
+	var path := "res://assets/props/bison.glb"
+	if not FileAccess.file_exists(path):
+		printerr("FAIL: bison.glb does not exist on disk at ", path)
+		quit(1)
+		return
+
+	var res := load(path)
+	if res == null:
+		printerr("FAIL: Could not load ", path)
+		quit(1)
+		return
+
+	print("PASS: Loaded PackedScene: ", res)
+	if res is PackedScene:
+		var inst = (res as PackedScene).instantiate()
+		if inst == null:
+			printerr("FAIL: Could not instantiate bison scene")
+			quit(1)
+			return
+		print("PASS: Instantiated bison: ", inst.name, " (", inst.get_class(), ")")
+		_print_node(inst, 0)
+		inst.queue_free()
+
+	print("=== Bison Model Smoke Test Passed ===")
+	quit(0)
+
+
+func _print_node(n: Node, depth: int) -> void:
+	print("  ".repeat(depth), "- ", n.name, " [", n.get_class(), "]")
+	for c in n.get_children():
+		_print_node(c, depth + 1)
+

scripts/smoke_test_bison_palette.gd

@@ -0,0 +1,103 @@
+extends SceneTree
+## Headless smoke test verifying Bison model is present in the editor palette
+## and loads properly via StaticObjectNode and EditorCore.
+
+const ChunkEditorModelClass := preload("res://scripts/editor/chunk_editor_model.gd")
+const EditorObjectCatalogClass := preload("res://scripts/editor/object_catalog.gd")
+const EditorCoreClass := preload("res://scripts/editor/editor_core.gd")
+const PalettePanelClass := preload("res://scripts/editor/ui/palette_panel.gd")
+const StaticObjectNodeClass := preload("res://scripts/static_object_node.gd")
+const WorldObjectClass := preload("res://scripts/world_object.gd")
+
+var passed := 0
+var failed := 0
+
+func _check(label: String, cond: bool) -> void:
+	if cond:
+		passed += 1
+		print("  PASS: ", label)
+	else:
+		failed += 1
+		printerr("  FAIL: ", label)
+
+
+func _initialize() -> void:
+	await _run()
+
+
+func _run() -> void:
+	print("=== Running Bison Model in Editor Palette Smoke Test ===")
+	var root := Node.new()
+	root.name = "TestRoot"
+	get_root().add_child(root)
+
+	# 1. Check catalog loading
+	var catalog := EditorObjectCatalogClass.new()
+	var err := catalog.load_catalog()
+	_check("Loaded EditorObjectCatalog from JSON", err == OK)
+
+	# 2. Check bison in default ids
+	var all_ids := catalog.get_all_ids()
+	_check("Catalog contains 'bison'", all_ids.has("bison"))
+
+	var bison_entry := catalog.resolve("bison")
+	_check("Bison entry has asset_id props/bison.glb", bison_entry.get("asset_id") == "props/bison.glb")
+	_check("Bison entry display_name is Bison", bison_entry.get("display_name") == "Bison")
+	_check("Bison asset file exists in project", FileAccess.file_exists("res://assets/props/bison.glb"))
+
+	# 3. Check alias resolution for legacy custom import id
+	var alias_entry := catalog.resolve("custom_bizon_by_madtrollstudio_rqk_lny_pnfx")
+	_check("Legacy custom id resolves to bison", alias_entry.get("asset_id") == "props/bison.glb")
+
+	# 4. Check PalettePanel populates bison in list
+	var palette := PalettePanelClass.new()
+	root.add_child(palette)
+	await process_frame
+	palette.set_catalog(catalog)
+
+	var found_in_palette := false
+	for i in range(palette._list.item_count):
+		var item_text := palette._list.get_item_text(i)
+		if item_text == "Bison":
+			found_in_palette = true
+			break
+	_check("PalettePanel list contains 'Bison'", found_in_palette)
+
+	# 5. Place bison in a chunk model
+	var model := ChunkEditorModelClass.new()
+	var core := EditorCoreClass.new(model, catalog)
+	var obj_id := core.place_object("bison", Vector3(10.0, 0.0, 15.0))
+	_check("Placed bison via EditorCore", not obj_id.is_empty())
+
+	var placed_obj := model.find_object(obj_id)
+	_check("Placed object has props/bison.glb", placed_obj != null and placed_obj.asset_id == "props/bison.glb")
+
+	# 6. StaticObjectNode with default props/bison.glb
+	var wo1 := WorldObjectClass.new()
+	wo1.id = "test_bison_1"
+	wo1.type = "prop"
+	wo1.asset_id = "props/bison.glb"
+	wo1.position = Vector3(10.0, 0.0, 15.0)
+	var node1 := StaticObjectNodeClass.new()
+	node1.world_object = wo1
+	root.add_child(node1)
+	await process_frame
+	_check("StaticObjectNode loaded visuals for props/bison.glb", node1.get_child_count() > 0)
+
+	# 7. StaticObjectNode with legacy user:// path as saved in World 6
+	var wo2 := WorldObjectClass.new()
+	wo2.id = "test_bison_legacy"
+	wo2.type = "prop"
+	wo2.asset_id = "user://custom_assets/Bizon by madtrollstudio - RqkLNYPnfx.glb"
+	wo2.properties = {"catalog_id": "custom_bizon_by_madtrollstudio_rqk_lny_pnfx"}
+	var node2 := StaticObjectNodeClass.new()
+	node2.world_object = wo2
+	root.add_child(node2)
+	await process_frame
+	_check("StaticObjectNode loaded visuals for legacy world chunk bison", node2.get_child_count() > 0)
+
+	print("Bison Palette Smoke Test complete. Passed: %d, Failed: %d" % [passed, failed])
+	if failed > 0:
+		quit(1)
+	else:
+		quit(0)

scripts/static_object_node.gd

@@ -61,6 +61,8 @@ func _load_mesh() -> void:
 		add_child(asset_node)
 		if asset_node is MeshInstance3D:
 			_mesh_instance = asset_node as MeshInstance3D
+		else:
+			_mesh_instance = asset_node.find_child("*", true, false) as MeshInstance3D
 		return
 
 	# 2. Build a stylized, recognizable 3D representation based on catalog ID / asset ID
@@ -96,9 +98,13 @@ func _try_load_asset(asset_id: String) -> Node:
 	var candidate_paths: Array[String] = [
 		asset_id,
 		"res://assets/%s" % asset_id,
+		"res://assets/props/%s" % asset_id.get_file(),
 		"user://custom_assets/%s" % asset_id,
 		"user://custom_assets/%s" % asset_id.get_file()
 	]
+	var lower_id := asset_id.to_lower()
+	if lower_id.contains("bizon") or lower_id.contains("bison") or lower_id.contains("madtrollstudio"):
+		candidate_paths.append("res://assets/props/bison.glb")
 
 	for cpath in candidate_paths:
 		if FileAccess.file_exists(cpath):