Add CombatDeaths []int field to MatchResult to track combat density
per player. This enables monitoring of focus-fire combat across all
matches and helps verify that the zone forcing function is working.
Changes:
- Add CombatDeaths []int to MatchResult struct
- Add CombatDeaths []int to GameState for tracking during match
- Increment combat death count for each killer in executeCombat
- Populate combat_deaths in final match result
- Update tests to include CombatDeaths in MatchResult
Verified: 6-player match shows combat_deaths: [1,1,1,1,1,1] (each
player killed 1 bot in mutual combat).
Closes: bf-4fez
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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