GravityShaderMirrorTests compares the expression of GravityField.Potential with gravityPotential in Gravity.cginc.
GravityFieldParityVerify now builds four off-axis bodies (one of mass 0), lowers through three frames with bodies moved
between them, and checks the map screen's gravity camera mask. RTS/Planet.prefab loses the Gravity Well object bound to
the Gravity Field material. Builds: yes (verify passes on Starfire; the new test is unrun until the Yggdrasil job).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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