Group M return (NYOSGVJV): r4 exercised, NOT ready. M0/M2 pass; M4 exact capture fails ParserError from multiline argv transport; M6 real ledger falsely emits CLEAR with PARTIAL coverage. Initial probe defects and M8 false green preserved and invalidated; corrected M3 kills both owned members, M5 denies breakaway without flag and demonstrates escape with BREAKAWAY_OK. Final corrected M8: all 13 registered identities GONE, zero unreadable; escaped child self-exited. No driver/product/field/apply change.
ONE receipt + containment proposal: .spt/preserved/hertz-fp-driver-review/d2/GROUP-M-RECEIPT-AND-CONTAINMENT.md (sha256 9ca9a6160b239e42afb4ccb779c245a5324b3c86407b95d0ce1d6d28afde723c). Out dir: .spt/preserved/hertz-fp-driver-review/d2/controls-out/20260913T103751Z-M/ (ARCHIVE.sha256, 140 files; correction evidence nested within). Please rule the next termination controls from that document. traceable-reqs 0.4.1 check: 903/903, zero findings.