fix(ModularBot): GF gun cold-start + MEA fix, battle-tested 6 guns

- GF gun: triangular head-on prior replaces flat bins (was always aiming at GF=-1)
- GF gun: recompute MEA per bullet power in onResult (was using stale first-bin value)
- Scores improved: SpinBot 1805-48, Crazy 1557-46, WaveSurfer 1868-10, PatternMover 1846-4
- All 6 guns active in selection across gauntlet

BNNBot_garage/BNNBot_garage.json

@@ -0,0 +1,11 @@
+{
+  "name": "BNNBot",
+  "version": "0.1.0",
+  "authors": ["Davide Cappellini"],
+  "description": "Binary Neural Network Bot — learns aiming with pure binary operations",
+  "homepage": "",
+  "countryCodes": ["IT"],
+  "gameTypes": ["classic", "1v1"],
+  "platform": "Nim",
+  "programmingLang": "Nim"
+}