Chat Refactor + Spawn Points Y Axis Fix

.github/copilot-instructions.md

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+# Copilot Instructions
+
+## General Guidelines
+- First general instruction
+- Second general instruction
+
+## Code Style
+- Use specific formatting rules
+- Follow naming conventions
+
+## Project-Specific Rules
+- The project uses the Unity Input System (Active Input Handling set to Input System). Avoid using `UnityEngine.Input.GetKeyDown`; prefer `TMP_InputField.onSubmit` or `UnityEngine.InputSystem` APIs.