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_gun_switching.nim

@@ -17,8 +17,8 @@ let enemies = @[
   ("Target",       sampleBots / "Target"),
   ("SpinBot",      sampleBots / "SpinBot"),
   ("Crazy",        sampleBots / "Crazy"),
-  ("PatternMover", "/home/davide/Projects/SirRoboGarage/common_libs/test_framework/adversaries/PatternMover_garage"),
-  ("RandomMover",  "/home/davide/Projects/SirRoboGarage/common_libs/test_framework/adversaries/RandomMover_garage"),
+  ("PatternMover", "/home/davide/Projects/SirRoboGarage/common_libs/test_framework/adversaries/PatternMover"),
+  ("RandomMover",  "/home/davide/Projects/SirRoboGarage/common_libs/test_framework/adversaries/RandomMover"),
 ]
 
 const logFile = "/tmp/modularbot_stdout.log"