feat(mvp): complete M13 clean-up milestone (real usernames, avatar studio redesign, pause menu, audio manager)

scripts/editor/ui/in_game_editor.gd

@@ -24,6 +24,7 @@ extends Control
 ## UI and the in-memory `ChunkEditorModel` is unaffected either way.
 
 signal closed
+signal exit_browser_requested
 
 var core: EditorCore
 
@@ -32,12 +33,17 @@ var _palette: PalettePanel
 var _inspector: InspectorPanel
 var _viewport: EditorViewport
 var _close_button: Button
+var _exit_browser_button: Button
 var _save_button: Button
 var _save_as_button: Button
 var _save_status_label: Label
 var _instruction_label: Label
 var _save_as_modal: Control = null
 
+var AudioManager: Node:
+	get:
+		return get_node_or_null("/root/AudioManager")
+
 
 ## Save-path state (world_persistence_impl.md §8.1/§8.2), set via
 ## `setup_persistence()`. `_save_service == null` means there is nothing to
@@ -118,11 +124,18 @@ func _build_ui() -> void:
 
 
 	_close_button = Button.new()
-	_close_button.text = "Close (F2 / Esc)"
-	_close_button.tooltip_text = "Exit build mode and return to game"
+	_close_button.text = "▶ Playtest (F2)"
+	_close_button.tooltip_text = "Exit build mode and test world in 3D play mode (F2 / Esc)"
+	_close_button.add_theme_color_override("font_color", Color(0.4, 0.9, 0.5))
 	_close_button.pressed.connect(_on_close_pressed)
 	top_bar.add_child(_close_button)
 
+	_exit_browser_button = Button.new()
+	_exit_browser_button.text = "🚪 Exit to Browser"
+	_exit_browser_button.tooltip_text = "Exit world and return to world browser"
+	_exit_browser_button.pressed.connect(_on_exit_browser_pressed)
+	top_bar.add_child(_exit_browser_button)
+
 	_instruction_label = Label.new()
 	_instruction_label.add_theme_font_size_override("font_size", 13)
 	_instruction_label.add_theme_color_override("font_color", Color(0.75, 0.92, 1.0))
@@ -206,6 +219,12 @@ func _unhandled_key_input(event: InputEvent) -> void:
 		_on_tool_selected("erase")
 		_toolbar.set_active_tool("erase")
 		get_viewport().set_input_as_handled()
+	elif key.keycode == KEY_ESCAPE:
+		if _save_as_modal != null and is_instance_valid(_save_as_modal):
+			_save_as_modal.queue_free()
+			_save_as_modal = null
+			get_viewport().set_input_as_handled()
+			return
 
 
 func _on_tool_selected(tool_id: String) -> void:
@@ -311,6 +330,7 @@ func _on_save_pressed() -> void:
 	_save_button.disabled = false
 
 	if result.get("ok", false):
+		AudioManager.play_chime()
 		_base_revision = int(result.get("revision", _base_revision))
 		var msg := "Saved (revision %d)." % _base_revision
 		if bool(result.get("retried", false)):
@@ -506,3 +526,10 @@ func _api_client() -> Node:
 func _session() -> Node:
 	return get_node_or_null("/root/Session")
 
+
+func _on_exit_browser_pressed() -> void:
+	exit_browser_requested.emit()
+	var sess := _session()
+	if sess != null:
+		sess.clear()
+	get_tree().change_scene_to_file("res://scenes/world_list.tscn")