Adapt: 2D to 3D Expert guidance for migrating 2D games into the third dimension. NEVER Do - NEVER directly replace Vector2 with Vector3(x, y, 0) — This creates a "flat 3D" game with no depth gameplay. Add Z-axis movement or camera rotation to justify 3D. - NEVER keep 2D collision layers — 2D and 3D physics use separate layer systems. You must reconfigure collision layer/collision mask for 3D nodes. - NEVER forget to add lighting — 3D without lights is pitch black (unless using unlit materials). Add at least one DirectionalLight3D. - NEVER use Camera2D follow logic in 3D — Camera3D needs sprin…