The exploration HUD frame: two-panel tabletop split, DM narration book wired to the proven /dm/narrate loop (prose-only + refire), thin tested ShellState for HUD readouts, inert system dock + command bar as faithful placeholder. Pure-core/thin-shim per the house pattern. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>