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feat(harness): durable event log with projected session inbox input - #19

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sanchitrk merged 8 commits into
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harness-prompt-with-event-arc
Aug 16, 2026
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sanchitrk merged 8 commits into
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harness-prompt-with-event-arc

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Publishing an event assigns the aggregate's next sequence, runs its projectors,
and writes the row in one transaction, so a projection that rejects an event
rolls it back along with its side effects.
Session.prompt records a prompt in session_input durably and idempotently;
promoting it appends the user entry in the same commit. The inbox and the entry
tree both take their positions from the log, so they share one sequence space.

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Comment thread packages/harness/src/db/migrations.ts
Comment thread packages/harness/src/session/session.ts
Comment thread packages/harness/src/event/event.ts
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Comment thread packages/harness/src/session/input/input.ts Outdated
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Comment on lines +305 to +308
for (const row of rows) {
const id = SessionMessageSchema.ID.make(row.id);
const won = yield* events
.publish(EventList.Prompted, {

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P2 Badge Claim each steer batch with one owner

When two coordinator instances drain a session containing at least two pending steers, each row is published in its own transaction here, so worker A can win the first row while worker B wins the second. Both callers then return positive promotion counts, and runner/loop.ts lets both execute a turn against the now-promoted conversation, duplicating or splitting work that should form one steer batch. The fresh evidence after the prior successful-count fix is that per-row counting still permits split ownership of a single batch; claim or serialize the batch per session before reporting runnable work.

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sanchitrk merged commit b995fc4 into dev Aug 16, 2026
@sanchitrk
sanchitrk deleted the harness-prompt-with-event-arc branch September 2, 2026 08:40
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