1## MODIFIED Requirements23### Requirement: The engine SHALL derive the MVP rule vocabulary from movable words4The engine SHALL scan horizontal and vertical straight lines for `NOUN IS VALUE` sentences, with adjacent `AND` terms expanding the noun side or value side. The initial semantic properties SHALL be exactly `YOU`, `PUSH`, `STOP`, `WIN`, `SINK`, and `DEFEAT`; a noun-to-noun value SHALL be treated as a transformation. Rules SHALL be recomputed from the current word positions after a turn that changes board state, including after contact effects remove word entities. The settled active rules, physical sentence spans, derived properties, and rule deltas SHALL describe only surviving words before the next player intent.56#### Scenario: An AND sentence expands to multiple properties7- **WHEN** the board contains `BABA IS YOU AND PUSH` in one straight line8- **THEN** the active rule table contains `BABA IS YOU` and `BABA IS PUSH`910#### Scenario: A moved word changes the active rules11- **WHEN** a legal move changes the position of a word entity12- **THEN** the engine replaces the active rule table with rules parsed from the new word positions before the next player intent1314#### Scenario: A malformed line is ignored15- **WHEN** a word line lacks `IS` or has no noun and value on both sides16- **THEN** the line produces no active rule and does not make the turn fail1718#### Scenario: SINK removes a rule word19- **WHEN** a turn causes `SINK` to destroy the `STOP` word in `ROCK IS STOP`20- **THEN** the settled state has no `ROCK IS STOP` rule or sentence span, the event reports that rule removed, and the next move onto ROCK is not blocked by `STOP`2122#### Scenario: Contact removal updates derived control and automata23- **WHEN** contact destruction removes a word granting `YOU` or a declared automaton property24- **THEN** the settled state's control and automata carriers reflect the surviving words, and Undo restores the previous derivations2526#### Scenario: A destroyed WIN word cannot grant a final victory27- **WHEN** a contact destroys the word that supplied a surviving entity's `WIN` property28- **THEN** the final victory check uses the surviving rule table and does not mark the level won from the destroyed word2930#### Scenario: Restore a state after rule-word destruction31- **WHEN** a settled snapshot lacking a destroyed rule word is restored or the level is reset32- **THEN** the restored state derives rules from its present words, while reset restores the initial words and their rules