Builds Blazium 0.8.x Control UI (anchors, Containers, Theme, focus) on Godot 4.8.x. Use for HUDs, menus, layout, and JustAMCP theme_tools (create_theme, set_control_theme_color, setup_control, runtime_find_ui_elements). Prefer Label / RichTextLabel. Not InputMap and not localization tables.
