Each header names its pass and the fixed-function state, blend and
formula it reproduces, with the client address; GPU traps, precision
rules and marked deviations stay. Bevy's own comments in the two
vendored UI shaders stay verbatim so an upgrade re-diffs cleanly. With
comments stripped every shader is identical.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
