feat: Implement a memory arena system with an ImGui-based visual debugger for allocation visualization.

Made using Gemini

.agent/rules/coding-guidelines.md

@@ -2,6 +2,8 @@
 trigger: always_on
 ---
 
+Code compiles with all warning active and warning as errors.
+use static_cast or reinterpret_cast but not parenthesis for casting.
 No exceptions
 Use [[nodiscard]]
 auto is allowed but when its a pointer add the * and when reference adds the &