ddidderr
95760b9940
Match the recovered Win16 registration flow: the first plus press creates Player 1 and additional presses add Players 2 through 4 until the initial launch. Down now belongs only to charging and releasing the plunger. Test Plan: - cargo fmt --check - cargo test - cargo clippy --all-targets --all-features -- -D warnings - live: verify Down cannot leave attract mode - live: start with plus, add Player 2, hold Down through partial/full plunger frames, and release onto the table - git diff --check