Add practice range: shooting, AK47, intro cinematic, dressed warehouse scene

- PortalTestDestination practice range: Valorant-style hitscan rifle (recoil,
  spray/bloom, reload, controller support), debug HUD, practice-dummy targets
  with head/body hitboxes, hit/death/respawn animations, procedural SFX/FX
- AK47 model (Quaternius, CC0) held via Animator IK, with fire/reload/equip anims
- Intro cinematic (camera shots, title card, target beam-in, GO hand-off)
- Scene dressing editor pass: CC0 textures, props, warehouse roof, lighting and
  post-processing; custom stylized skybox shader
- CharacterMovement: camera recoil, shoulder offset, cinematic control lock
- Unity CLI pipeline package; plus in-progress chat/Rive/player changes

Asset credits: Assets/Models/Props/PROPS_CREDITS.txt (3 CC-BY 3.0 props),
Assets/Textures/Range/TEXTURES_LICENSE.txt, Assets/Resources/*/..._LICENSE.txt

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Assets/Scripts/Chat/ChatUI.cs

@@ -1,6 +1,7 @@
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
+using UnityEngine.EventSystems;
 using UnityEngine.UI;
 using TMPro;
 
@@ -35,6 +36,17 @@ public class ChatUI : MonoBehaviour
     // Expose whether the chat input is focused so other systems can disable input/movement
     public static bool IsInputFieldFocused => Instance != null && Instance.chatMessage != null && Instance.chatMessage.isFocused;
 
+    // Called by PlayerScript when Escape is pressed while chat is focused, so mouse-look/
+    // cursor lock can resume immediately instead of waiting for a manual click-away.
+    public void ExitChatFocus()
+    {
+        if (chatMessage != null)
+            chatMessage.DeactivateInputField();
+
+        if (EventSystem.current != null)
+            EventSystem.current.SetSelectedGameObject(null);
+    }
+
     // Called by Player.OnStartLocalPlayer to connect the UI to the player's network methods.
     public void Initialize(Player player)
     {