v0.6.3

v0.6.3 - 2026-05-13

• Fix older replay player substitution handling so late reservation and
  party-leader mappings update player rosters, stats timeline metadata, and
  Ballchasing comparison output instead of leaving placeholder cars at midfield.
• Add a 2016 Ballchasing replay fixture and regression coverage for old replay
  substitutions and PlayStation-style player identity collisions.
• Document the legacy player-identity compatibility behavior discovered from
  the old replay investigation.
• Refresh Rust, Python, and JavaScript release metadata to 0.6.3.