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amethyst/amethyst
Claude f24cb95902 feat(marmot): advertise every agent-stream role and render previews on Android
Our leaf advertised `receive` only, which was honest while nothing could
originate a stream and is not any more. It now advertises `receive`,
`send` and `fanout` — the same set MDK puts on every KeyPackage it
publishes — so a group requiring any of them admits us. A capability is a
claim about what the client supports, not a duty to stream: a member that
never originates one is a quiet member, not a broken one.

The role-gate test asserted the old behaviour, so it was testing our own
capability set rather than the gate. It now builds a deliberately reduced
leaf and checks that THAT is refused, which keeps working whatever we go
on to advertise; a second case pins the new fact that we fill every role
the profile defines.

`MarmotAgentStreamWatcher` in commons follows the newest kind:1200 in a
group, folds the QUIC records behind it under the receive discipline, and
settles the result against the durable kind:9 — confirmed when the
transcript agrees, dropped when it does not, because a disagreement means
we rendered something the publisher never sent. Resolving the final
message lives here rather than in the UI so a front end only has to say
"the feed moved", and so the whole decision is testable without a UI.

Android shows it as an italic, labelled row between the transcript and
the composer. Provisional content has to look provisional: preview text
is not durable history until the final message vouches for it, and the
row disappears the moment it is confirmed or contradicted. Progress and
status records render as separate chrome, never as answer text, which is
what the spec requires of them.

Every failure path ends as "no preview" rather than as a broken group: no
stream, no broker candidate, an unreachable broker, an unimplemented
stream type, or a platform with no QUIC at all. `receive` explicitly does
not require the QUIC data plane.

The desktop app has no Marmot chat screen to render into — its chat UI is
NIP-17 only — so there is nothing to wire there yet. The watcher is in
commons and speaks only quartz's transport port, so desktop inherits it
the day that screen exists.

Interop unchanged at 19 of 19 with all three roles advertised.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016kCuA6tc4JQzHPCDd39GHq
2026-09-09 13:32:30 +00:00
..
2024-06-24 14:13:55 -04:00