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Touch layout (USE_TOUCH_UI_LAYOUT) restructures the bottom action bar to five buttons: an enlarged Undo / Draw / Hint trio (96x64px targets, 1.35x labels) between compact Menu and Pause. Draw is new — it fires the same DrawRequestEvent as tapping the stock, so the most frequent action no longer needs a reach to the top of a tall folded screen. Help, Modes, and New Game leave the touch bar (they live in Menu -> System, the Home grid, and Home's hero respectively). Desktop keeps the seven-button bar unchanged (decision 5: touch-only). Holding Undo now steps back repeatedly after a 0.45s delay (5.5/s), each step through the normal request path so the scoring penalty applies. New self-ambiguous DrawRequestWriters set keeps the ambiguity gate at zero with the fourth DrawRequestEvent writer. 6 new hud_plugin tests; workspace suite + clippy green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>