Specify a transparent black scrim drawn over the entire game window
(header bar, game world view, side panel column) while any auto-pausing
modal is open — the escape menu, selection dialog, layout configuration
dialog, and schematic choice dialog — plus the game-over and win
screens. Nested modals show a single dim, not stacked layers. The
dim colour is config-driven via visuals.toml [overlays].
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DZR44tA8sn4dPqDzAVXyps