Return exact path progress with each fixed-point line and circle candidate.
Evaluate the complete recovered physical object set and apply the nearest
contact, matching the selection logic in the original collision dispatcher
instead of stopping at the lowest matching object id.
This prevents dense assemblies from choosing a later wall or circle merely
because its record appears earlier in the table.
Test Plan:
- `cargo test --all-targets` -- 45 passed
- `cargo clippy --all-targets -- -D warnings` -- passed
- `cargo build --profile production` -- passed
- collision-progress ordering test -- passed
- `git diff --cached --check` -- passed
ddidderr
20e751de80