Answer A-233: an age-kept stream is read whole at every start

Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
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2026-11-12 09:41:28 +01:00
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@@ -209,3 +209,6 @@ the principle that settles it, cited as "design 47 G A-n".
`run` in the body and the asker the indexer's seat name `mesh-catalog`, as every ask does; its id is the usual
form (`NewID`), and the revision's sequence and try number are kept in the pending value's `validation`. §712's
subject and id are read so.
- **A-233** (A-181, A-189; principle 7) mesh-sdk's `HearStream` gains a form that reads an age-kept stream whole from
its first message by an ordered consumer at every start, then follows the durable; the grants part grants that
ordered consumer on every heard seat kept stream, as it grants `STREAM.INFO`, with no manifest word.