Add synced user notes

tests/notes_ui_test.gd

@@ -0,0 +1,37 @@
+extends SceneTree
+
+const NotesEditor := preload("res://scripts/ui/notes_editor.gd")
+const NotesDialog := preload("res://scripts/ui/notes_dialog.gd")
+const NavigationRoutes := preload("res://scripts/ui/navigation_routes.gd")
+
+var failures := 0
+
+
+func _initialize() -> void:
+	call_deferred("_run")
+
+
+func _run() -> void:
+	var editor := NotesEditor.new()
+	root.add_child(editor)
+	await process_frame
+	_assert(editor.editor != null, "notes editor should create a text editor")
+	_assert(editor.editor.wrap_mode == TextEdit.LINE_WRAPPING_BOUNDARY, "notes should wrap plain text")
+	_assert(NavigationRoutes.key_for_screen("notes") == "notes", "notes should have a navigation route")
+
+	var dialog := NotesDialog.new()
+	root.add_child(dialog)
+	await process_frame
+	_assert(not dialog.visible, "notes dialog should start hidden")
+	_assert(dialog.notes_editor != null, "notes dialog should contain the shared editor")
+
+	editor.queue_free()
+	dialog.queue_free()
+	quit(1 if failures > 0 else 0)
+
+
+func _assert(condition: bool, message: String) -> void:
+	if condition:
+		return
+	failures += 1
+	push_error(message)