Single GameClient entry (no {res}: D3 takes -width/-height, resolution
pinned to the pod main screen; no supervisor: single process). Args boot
straight into the campaign first level for phase-0 free flight; they
change to -venue once the D3_VENUE Munga build ships. LC/MR keys
...971/...972 reserved. Catalog diff tests updated (21 passing).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>