Investigate lava rendering as ordinary water on develop

Investigate the reported PRK.Client lava-to-ordinary-water regression in a fresh worktree from origin/develop (a1923b4ab), /home/mathias/Projects/engines-lava, branch fix/investigate-lava-regression. Leave the original checkout's unstaged Bloom work untouched. Trace packed liquid decoding, recipe selection, shader/material binding and recent history; establish an evidence-backed cause and validate any warranted fix with focused non-GUI tests/builds. No client launch or screenshots; visual verification remains user-owned. Existing authored liquid implementation and accepted lava appearance must be preserved. Acceptance: identify the regression or clearly bound remaining uncertainty; any fix retains independent liquid types and passes relevant validation.