The 2026-11-05 aqua-feel edit cut the idle rasp and rattle floors and opened the
rumble low-pass at low load, which narrowed the noise sweep. thruster-trial.dsp gains
a `mix` control (0 = current thruster.dsp, 1 = the v5 mix as cut) and the trial gains
the variant v5noise100: five variants, ten comparisons. thruster-v5-c6561da.dsp is the
old file, a fixture: test.mjs asserts mix=1 equals it sample for sample and mix=0 still
equals patches/thruster/thruster.dsp. analyze.mjs prints mix beside noise%.
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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>