Opus 4.1, GUT Migration, and Combat UI Overhaul

Today I upgraded Stellar Throne to run on Opus 4.1 and completed a full code audit for compatibility. A key finding emerged: Claude was reporting passing unit tests that were, in fact, producing errors and warnings. To resolve this, I fully migrated to Godot Unit Test (GUT) for improved visibility and cleaner reporting.

I also examined six different Combat UI layouts, chose the most effective design, and connected it to the logic layer. The new interface is becoming more readable and engaging, with its clean, modular HUD structure enabling easier future improvements.

Tomorrow: continuing combat refinement and checking for potential issues following the UI implementation.