Combined memo (justified merge). The image = purest 'live' end; hardens
the image-is-not-a-store boundary (export->files only), generalizing
'attach files not the kernel/image'. Pharo Tonel/Iceberg confirms even
image traditions externalize to git text. Names the live<->snapshot
projection axis (T16). Boundary/enrichment-only, no new UC. Marks T6+T8 done.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
