feat(BNNBot): add energy (8+8 bits) and gun ready (1 bit) — 117 bits total

Added myEnergy, enemyEnergy, and canFire to ScanData. Energy fields quantize 0-150 → 8 bits each; gun ready is 1 bit (1 = can fire, 0 = can't). Updated total encoding from 100 to 117 bits.

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

BNNBot_garage/src/BNNBot.nim

@@ -41,18 +41,21 @@ method onScannedBot*(bot: BNNBot, e: ScannedBotEvent) =
   let enemyX = e.x
   let enemyY = e.y
   let scan = ScanData(
-    bearing:    bot.enemyBearing,
-    distance:   bot.distance,
-    velocity:   bot.velocity,
-    heading:    bot.heading,
-    myWallN:    arenaH - by,
-    myWallS:    by,
-    myWallE:    arenaW - bx,
-    myWallW:    bx,
-    enemyWallN: arenaH - enemyY,
-    enemyWallS: enemyY,
-    enemyWallE: arenaW - enemyX,
-    enemyWallW: enemyX,
+    bearing:      bot.enemyBearing,
+    distance:     bot.distance,
+    velocity:     bot.velocity,
+    heading:      bot.heading,
+    myWallN:      arenaH - by,
+    myWallS:      by,
+    myWallE:      arenaW - bx,
+    myWallW:      bx,
+    enemyWallN:   arenaH - enemyY,
+    enemyWallS:   enemyY,
+    enemyWallE:   arenaW - enemyX,
+    enemyWallW:   enemyX,
+    myEnergy:     getEnergy(),
+    enemyEnergy:  e.energy,
+    canFire:      getGunHeat() <= 0.0,
   )
   let vec = encode(scan)
   let hamming = if bot.hasPrev: hammingDistance(bot.prevVec, vec) else: 0