Add UIAutomation background injection for Roblox Studio

- bg_inject.ps1: PowerShell UIAutomation script that finds Studio command bar by AutomationId and injects Lua code without window focus
- bg_inject.py: Python wrapper for bg_inject.ps1
- bg_inject_uia2.ps1: Discovery/debugging script for finding Studio UI controls
- inject_full_gta.py: 7-step GTA city + COD weapons + enemies injection using background API
- inject_gta_bg.py: Alternative multi-file GTA injection loader

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

inject_gta_bg.py

@@ -0,0 +1,39 @@
+"""GTA City + COD Weapons + Human Enemies - Full Background Injection"""
+import bg_inject, time
+
+scripts = [
+    ("Clean+Ground+Roads", "roblox-gta-s1-ground.lua"),
+    ("Buildings", "roblox-gta-s2-buildings.lua"),
+    ("StreetProps", "roblox-gta-s3-props.lua"),
+    ("Weapons+Events", "roblox-gta-s4-weapons.lua"),
+    ("Server+Enemies", "roblox-gta-s5-server.lua"),
+    ("HUD", "roblox-gta-s6-hud.lua"),
+    ("PlayerCtrl", "roblox-gta-s7-player.lua"),
+    ("WeaponCtrl", "roblox-gta-s8-weaponctrl.lua"),
+]
+
+lua_dir = r"C:\Users\Admin"
+
+for i, (name, filename) in enumerate(scripts, 1):
+    path = f"{lua_dir}\\{filename}"
+    print(f"[{i}/{len(scripts)}] {name}...", end="", flush=True)
+
+    if not bg_inject.inject(open(path, encoding="utf-8").read())[0]:
+        print(" FAILED")
+        break
+    print(" OK")
+    time.sleep(3)
+
+# Start play mode
+print("\nStarting Play mode...")
+ok, msg = bg_inject.inject('game:GetService("VirtualInputManager"):SendKeyEvent(true,Enum.KeyCode.F5,false,game)task.wait(.1)game:GetService("VirtualInputManager"):SendKeyEvent(false,Enum.KeyCode.F5,false,game)')
+print(msg)
+
+print("\n" + "=" * 55)
+print("  GTA CITY + COD WEAPONS + HUMAN ENEMIES")
+print("  100% Background Injection - no clicks needed!")
+print("=" * 55)
+print("  WASD=Move  LMB=Shoot  RMB=ADS  R=Reload")
+print("  Shift=Sprint  Ctrl=Crouch")
+print("  1-4=AR  5-6=SMG  7-8=Sniper  9=SPAS  0=RPG")
+print("=" * 55)