Refinement regression: CHURNING
  fixed (resolved): 0   still open (carried): 0
  broke (new):      1   resurfaced (churn):  1
  qc dir: fixture/churning/qc   ledger: fixture/churning/ledger.jsonl
  -> A previously-resolved finding reappeared (HEDGE_ACCRETION@whole document) -- the loop is re-deriving, not converging (the Mirror Loop). Stop revising and re-anchor; more passes will not help.
