Adds TR_SAMPLE_BOTS env var support to point to external sample bots (Walls, Fire, SpinBot, etc). Updates test_bullet_economy.nim to use Walls from the sample-bots directory instead of custom WallsBot, removing the hardcoded path dependency.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add --max-speed flag to TestBattleRunner (sets defaultTurnsPerSecond=-1 for unlimited TPS).
Add SNNBot_garage/tests/test_bullet_economy.nim: 10-round vs WallsBot, prints per-round and summary stats for tuning.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>