1## ADDED Requirements23### Requirement: Undo SHALL restore the complete visual entity state4After a successful Undo, the presentation SHALL reconcile visible entities from the restored engine snapshot by stable ID, including existence, noun or glyph, grid position, facing, control marker, and active visual effects. Effects created by the undone death turn SHALL not remain visible after reconciliation.56#### Scenario: Proof 05 death then Undo restores MIAU immediately7- **WHEN** MIAU dies in proof 05 and the player invokes Undo on a mobile viewport8- **THEN** the restored MIAU glyph and its control marker are visible at the prior position on the next presentation frame, and the red death shadow from the undone turn is absent910#### Scenario: Repeated death and Undo does not accumulate stale effects11- **WHEN** the player repeats a death followed by Undo multiple times12- **THEN** each restored snapshot shows exactly the engine entities for that turn and no prior death shadow or missing glyph persists1314#### Scenario: Reset clears death presentation state15- **WHEN** the player resets after a death or after an Undo16- **THEN** the board shows the native initial entities and facing, with no stale destruction effect or missing controlled glyph1718#### Scenario: Reduced motion restores without a transition gap19- **WHEN** reduced motion is enabled and the player invokes Undo after death20- **THEN** the restored entities and controls appear immediately with no intermediate death animation frame2122#### Scenario: Input paths share the same recovery23- **WHEN** Undo is invoked by keyboard, touch, or Standard gamepad after a death24- **THEN** each input path produces the same restored visual state and unchanged engine move history