Represent press and release as distinct deferred flipper edges. Keep upward
position/velocity transfer unchanged, and apply the position-preserving
return-stroke velocity recovered from a live ball at `(125,390)`, mirrored for
the right flipper.
The downstroke now assigns raw `(3519,6302)` before the next physics clamp,
matching the original instead of moving geometry silently.
Test Plan:
- `cargo test --all-targets` -- 48 passed
- `cargo clippy --all-targets -- -D warnings` -- passed
- `cargo build --profile production` -- passed
- live downstroke transfer test -- passed within one raw unit
- `git diff --cached --check` -- passed
ddidderr
b86810ebed