feat(testing): gun rack gauntlet + analysis reports

- fix(ModularBot): onBulletHitBot → onBulletHit (real hits were never tracked)
- feat(ModularBot): per-round gun stats dump to /tmp/gun_stats.jsonl
- feat(ModularBot): gun selection counter per round
- fix(tests): adversary paths _garage suffix removed from 7 test files
- feat(tests): test_gauntlet_5bots.nim — 10-round gauntlet vs all 5 adversaries
- feat(tests): analyze_gun_stats.nim — JSONL parser for gun performance tables
- docs: gun_rack_analysis.md — full per-gun performance report
- docs: gun_rack_summary.md — TL;DR verdict table (keep/drop/tune)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ModularBot_garage/tests/test_gauntlet_guns.nim

@@ -10,7 +10,7 @@ import test_framework/battle_result
 const
   modularBotDir = currentSourcePath().parentDir.parentDir
   samplesDir    = "/home/davide/Downloads/robocode-tankroyale/sample-bots-nim-linux-1.0.7"
-  waveSurferDir = "/home/davide/Projects/SirRoboGarage/common_libs/test_framework/adversaries/WaveSurfer_garage"
+  waveSurferDir = "/home/davide/Projects/SirRoboGarage/common_libs/test_framework/adversaries/WaveSurfer"
   spinBotDir    = samplesDir / "SpinBot"
   crazyDir      = samplesDir / "Crazy"