fix(PPO_Bot): SIGSEGV crash fixes + static buffers for thread safety

- bullets: seq[InFlightBullet] → array[4, InFlightBullet] + bulletCount
  (eliminates cross-thread heap realloc under ORC)
- hasFired: edge-triggered (cleared after state build, not level-triggered)
- round_counter parseInt: wrapped for empty/torn file → 0
- Static SVG + intent buffers to kill cross-thread heap realloc
- Tick-local alive/bulletData also fixed arrays

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

PPO_Bot/enemy_tracker.nim

@@ -27,13 +27,19 @@ proc update*(tracker: var EnemyTracker;
   ## Call on ScannedBotEvent. Detects enemy fire from energy delta.
 
   # Shift history window
-  if tracker.historyCount > 0:
+  if tracker.historyCount == 0:
+    # Cold-start: pre-fill all slots with the incoming scan so indices 22-41
+    # are never zero-padded on tick 1. Accel/turn-rate correctly stay 0 (no delta yet).
+    for i in 0 ..< 5:
+      tracker.history[i] = (scanX, scanY, scanDir, scanSpeed)
+    tracker.historyCount = 5
+  else:
     for i in countdown(min(tracker.historyCount, 4), 1):
       tracker.history[i] = tracker.history[i - 1]
-  tracker.history[0] = (tracker.current.x, tracker.current.y,
-                         tracker.current.direction, tracker.current.speed)
-  if tracker.historyCount < 5:
-    inc tracker.historyCount
+    tracker.history[0] = (tracker.current.x, tracker.current.y,
+                           tracker.current.direction, tracker.current.speed)
+    if tracker.historyCount < 5:
+      inc tracker.historyCount
 
   # Detect firing: energy drop in [0.1, 3.0] means enemy fired
   let delta = tracker.prevEnergy - scanEnergy