The mapping half of the serve migration, written and pinned before anything depends on it,
so the switch-over is not also the moment the parsing turns out to be wrong. Nothing routes
through this — turns are still opencode run subprocesses, and the claude path is untouched.
The finding that matters: the serve publishes each turn TWICE, and reading the wrong one
makes it look like it cannot stream at all.
/api/session/{id}/event?after= durable, per session, replayable, durable.seq on every
event, whole values only, NO deltas
/api/event live, GLOBAL, ephemeral, carries text.delta and
tool.input.delta, no cursor
Same turn: 13 events durable, 21 live, the difference being 3 text.delta and 5
tool.input.delta. I probed the per-session one first and nearly recorded "no streaming" as
a fact — it would have removed the main reason to migrate. The split maps exactly onto what
officer already does for claude: durable to chat_session_events, live to UI deltas. The cost
is that the live stream is global, so a consumer must filter on sessionID.
tool:start is emitted on tool.called, not tool.input.started, because only tool.called has
the resolved input object — the input arrives as JSON fragments ({"comman) and a tool row
rendered with half-parsed arguments is worse than one that appears a moment later.
step.ended with finish tool-calls is a step boundary MID-turn, not the end of the turn, so
nothing terminal is emitted for it. Treating it as the end would cut every tool-using
conversation in half.
Fixtures are verbatim captures from 1.18.16. Replaying both real streams through the mapper
reconstructs the turn identically from each, with the reassembled deltas exactly equal to
the committed text and identical cost, and zero unrecognised events.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Crash-recovery state is not a gap: state:sync goes to the proxy capability and carries
proxySecret, and syncState/getCachedState have no callers at all. The row compared opencode
against a mechanism officer never consults. The real recovery story now exists and is better
— a sidecar restart stops in-flight turns and writes the reason to chat_session_events.
Identity is deferred, not forgotten: TODO.md already records it, and chat is kind execution,
which the grants API refuses to share at any level, so no member can reach it.
Also adds the serve migration plan, written while the facts are fresh and nothing is on
fire. It leads with the five things that will bite whoever implements it — per-request
location, the data wrapper, delivery defaulting to steer, silent failure on an unconnected
credential, and the session.next event names — because none of them are in the API docs and
each cost time to find today.
Phased so the old path stays one config flip away, and so warm-session lifetime (idle GC,
orphan adoption, the supersede race) is imported deliberately rather than discovered.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
pastilhasandClaude Opus 5