chore(client): Godot rewrote project.godot header on open

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

client/project.godot

@@ -1,6 +1,10 @@
-; Godot project configuration.
-; Minimal skeleton — open in Godot 4.7 to flesh out.
-; Docs: https://docs.godotengine.org/en/stable/tutorials/editor/project_settings.html
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
 
 config_version=5