Levi Neuwirth
f105b53599
Chapter 8's OperationEnvelopeBlock carries dvv_summary/min_stamp/max_stamp so a
reader can select or skip a block by causal frontier / stamp range without
decoding it. These are semantic (ops-computed); the bundle carries them opaquely.
Bundle (Agent D):
- OperationBlockSummary { dvv_summary: FrontierBytes, min_stamp, max_stamp } and
Manifest.operation_block_summaries: BTreeMap<ChunkId, OperationBlockSummary>,
keyed by the block's chunk id, encoded/decoded in canonical (ChunkId-ascending)
order and accessible via Manifest::operation_block_summary. Optional and
non-canonical; preserved across reopen by the manifest round-trip.
- Round-trip + selectability test.
Testkit (Agent F, the C/D integration point):
- roundtrip::operation_block_summary computes the summary from envelopes using
ops (causal frontier + min/max OperationStamp canonical bytes).
- assert_operation_block_summary_survives_storage commits a real operation block
+ its summary, reopens, and selects the summary by block id without decoding
the payload. Wired into acceptance + the conformance suite.
bundle DECISIONS updated (summary metadata now carried, not omitted); fixed a
stale "pending item 5" doc on criterion 4 (the whole-score codec has landed).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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