Review #006: record L4/N1/M4 closure; add M5/M6 (fixed) and N3 (open)
- Resolution blocks on L4 (BTreeMap index + first-occurrence-wins
pinned), N1 (tunion extended), M4 items 1-4 (aligned family, reader
arms, data-access guards, dead-arm verdict with the structural note
that the legacy packed walker serves only aligned fallbacks now).
- New findings: M5 (aligned record maxLength/offset-indirect silent
corruption, resolved same-day), M6 (legacy walker field-disc union
skipped shared fields, resolved same-day), N3 (packed record
maxLength unenforced in validate_bytes, open - posture decision).
- Stats, resolution log, recommended order, and notes updated.
glm-5.3-flash
0857ea1c23