Viewing buffer: fixed global3072 continuation

Fixed +2,048-update continuation of buffer viewing mode, ending at global update3,072.

Uses exact previously archived source cache (linked in archive.json); no source recompilation and no new whole-graph transfer evaluation. Adam resets explicitly. All320 training/development pairs replayed both-condition answer scores exactly before optimization. Native blocks34–35 and final norm trained; original output head frozen. Historical test is exploratory, not a newly sampled confirmatory cohort.

Scientific source d7755ce. Compact raw results and source checksums are public in results/viewing-continuation-053-054. SHA256SUMS binds these release artifacts.