fix(physics): restore type-three contact state

Replace the shared boolean sensor latch with the two distinct states used by the
binary: per-player 16-bit contact words for type-three records and transient
entry flags for type-four triggers. Only active/contact record state is mirrored
across player turns, matching the original save/load loop.

Port the type-three deep-inside threshold, velocity damping and 150-millipixel
pull, stationary gate, first-contact sound and ball-number publication, shared
capture age in five-unit steps, and the 99/2 completion sentinels. Lock holes and
the reset pocket now complete after the recovered hold interval; the claw
publishes its sound on contact and starts on the following completed state.

Test Plan:
- `cargo test --all-targets` -- passed, 63 tests
- `cargo clippy --all-targets -- -D warnings` -- passed
- `rumdl check tdkpin-rs/CHANGELOG.md tdkpin-rs/RECONSTRUCTION.md` -- passed
- `git diff --cached --check` -- passed

tdkpin-rs/CHANGELOG.md

@@ -10,6 +10,10 @@ and this project adheres to
 
 ### Fixed
 
+- Split collision contact state into per-player 16-bit type-3 contact words and
+  transient type-4 entry flags. Type-3 records now use the original deep-inside
+  gate, `v*0.9 +/-150` pull, stationary sound/contact publication, 5-step age
+  progression to 300, and `99`/`2` completion sentinels.
 - Replace the live-fitted flipper transfer polynomials with the reconstructed
   `1000:7ed9` millipixel geometry gates, penetration, gain, response-record,
   velocity, and position calculations for both directions and both balls.