v1 only saw a foreign ORBIT lighting up on the wrong side of a cut; it was blind
to a foreign SOUND on an orbit active on BOTH sides (e.g. breaks playing through
a transition). v2 (--spectral) closes that:
- per shared orbit, profile tail/head probe windows + each track's interior ref,
  composite timbral distance (band-shape cosine + centroid shift); flag when the
  tail sounds like the NEXT track (incoming) or the head like the PREVIOUS (outgoing).
- gated by MIN_REF_DIST (versions must differ) and SPEC_MIN_RMS=-50 (probe must
  have real sound — the silence gate caught 4 of my own false positives).
- independently flagged the WAP->'Plosive breaks bleed (orbit-08, Delta=0.475) that
  v1 missed = PLN's 'bordel jusqu'a 0342' zone; + Premier Septembre->Techno Orage.
- EDL now 9 ear + 7 orbit + 6 spectral derived rows; round-trips through MasterEDL.

Delta = severity rank; live crossfades blend by design, so PLN's ear gates feel.