feat(test_framework): add WallsBot adversary for lead prediction testing

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

common_libs/test_framework/adversaries/WallsBot/WallsBot.json

@@ -0,0 +1,9 @@
+{
+  "name": "WallsBot",
+  "version": "0.1.0",
+  "authors": ["Test"],
+  "description": "Traces arena perimeter clockwise — test adversary for lead prediction",
+  "gameTypes": ["classic", "1v1"],
+  "platform": "Nim",
+  "programmingLang": "Nim"
+}

common_libs/test_framework/adversaries/WallsBot/WallsBot.sh

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+#!/bin/sh
+cd "$(dirname "$0")"
+exec ./out/WallsBot 2>> /tmp/wallsbot_stderr.log

common_libs/test_framework/adversaries/WallsBot/config.nims

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+--path:"../../.."
+switch("outdir", "out")

common_libs/test_framework/adversaries/WallsBot/src/WallsBot.json

@@ -0,0 +1,9 @@
+{
+  "name": "WallsBot",
+  "version": "0.1.0",
+  "authors": ["Test"],
+  "description": "Traces arena perimeter clockwise — test adversary for lead prediction",
+  "gameTypes": ["classic", "1v1"],
+  "platform": "Nim",
+  "programmingLang": "Nim"
+}

common_libs/test_framework/adversaries/WallsBot/src/WallsBot.nim

@@ -0,0 +1,24 @@
+# WallsBot — traces arena perimeter clockwise. No firing; pure evasion target.
+# Turns right 90° on wall hit, then charges forward at max speed.
+
+import std/os
+import tankroyale_botapi
+
+const botJsonPath = currentSourcePath().parentDir / "WallsBot.json"
+
+type WallsBot = ref object of Bot
+
+method onRoundStarted*(bot: WallsBot, e: RoundStartedEvent) =
+  setTurnRate(90.0)  # begin with a right turn to face along the nearest wall
+
+method onHitWall*(bot: WallsBot, e: HitWallEvent) =
+  setTurnRate(90.0)  # turn right 90° then keep going
+
+method run*(bot: WallsBot) =
+  while isRunning():
+    setTargetSpeed(MAX_SPEED)
+    go()
+
+when isMainModule:
+  var bot = WallsBot()
+  start(bot, botJsonPath)