The overnight story: 60→534-track corpus via a 24-subagent workflow (schema-
enforced GT, 0 invalid); cross-model drift (Sonnet relabels all 534) as a
conscience — 72%% quadrant agreement, 174 uncertain-GT tracks concentrated on
circumplex-straddling genres (hardstyle, uplifting trance, neoclassical); and
the unplanned corroboration — a separate ontology-critique panel converged on
the SAME high-arousal gap the drift flagged (groovy/propulsive/transcendent/
menacing). Plus the infra lesson: only a systemd --user unit survives sandbox
teardown. Calibration verdict (whole-mix vs stem at scale) left as the
cliffhanger pending the grind.