Extend the HUD to show the per-level goal (SCORE x / target) alongside
moves. When the model's level_status (P7.1) is won/lost, draw a centered
overlay banner ("YOU WIN!" / "OUT OF MOVES") with a "PLAY AGAIN" restart
button over the dimmed board; the banner appears once any winning/losing
cascade animation settles. Status is read from the model, never recomputed
in the view.
A finished level freezes board-cell input; only the restart button is live.
Its rect is derived from the shared BoardLayout grid (new BannerLayout), so
the hit-test lands exactly on the drawn button. A tap reseeds the same
starting level through board.restart and clears the transient view layers,
returning to a clean in_progress board.
Banner is text + rects only (honours colour/alpha; no draw-time image tint,
issue 0002). New env capture hooks (M3TE_TARGET / M3TE_MOVE_LIMIT /
M3TE_RESTART) force a terminal status / restart for deterministic goldens.
Tests: tests/banner_layout.sx locks the restart button rect <-> hit-test
round-trip headlessly. Goldens p7_win / p7_lose / p7_restart captured on the
iOS simulator.
5be379f180