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refactor(core): simplify session input promotion (#33443)

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Kit Langton 2026-06-22 23:51:49 +02:00 • committed by GitHub
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7
specs/v2/schema-changelog.md
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@ -1,5 +1,12 @@
# V2 Schema Changelog
## 2026-06-22: Simplify Session Input Promotion
- Keep `session.next.prompt.admitted.1` as the durable, client-visible record of pending Session input.
- Replace `session.next.prompt.promoted.1` with the existing `session.next.prompted.1` event when input becomes model-visible.
- Preserve the prompt endpoint, admission receipt, idempotency, steer/queue ordering, and atomic user-message projection.
- Reset experimental V2 events, projections, inputs, Context Epochs, and synchronized workspace state while preserving canonical V1 `session`, `message`, and `part` rows.
## 2026-06-22: Reset Unpublished Compaction Event
- Replace the unpublished `session.next.compaction.ended.1` payload with the current checkpoint payload and remove its legacy decoder.

8
specs/v2/session.md
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@ -12,8 +12,8 @@ sessions.create({ id?, location, ... })
sessions.prompt({ id?, sessionID, prompt, delivery?, resume? })
-> omitted ID generates one internal message ID
-> supplied ID admits one durable Session input when absent
-> exact reuse returns the same admitted lifecycle receipt
-> supplied ID inserts one durable Session inbox row when absent
-> exact reuse returns the same admission receipt
-> reusing one message ID for another Session, prompt, or delivery mode fails
-> exact retry schedules another wake unless resume is false
-> resume omitted or true schedules execution after admission
@ -27,7 +27,9 @@ sessions.interrupt(sessionID)
-> idle or missing Session is a no-op
```
`session_input` is the durable admission inbox. Admitted inputs remain outside model-visible Session history until the serialized runner publishes `PromptLifecycle.Promoted`. The projector atomically writes the visible user message and marks its inbox row promoted in the same event transaction. The legacy V1-to-V2 shadow bridge continues publishing ordinary `Prompted` events for already-visible V1 prompts.
`session_input` is the durable admission inbox. `PromptAdmitted` records and projects accepted input so pending queue state can be replayed, replicated, and observed by clients. Admitted inputs remain outside model-visible Session history until the serialized runner publishes `Prompted`. Its projector atomically writes the visible user message and marks the inbox row promoted in the same event transaction. The V1-to-V2 shadow bridge publishes the same `Prompted` event for already-visible V1 prompts.
`admittedSeq` is the durable Session event sequence of `PromptAdmitted`. Clients may use the admission event to represent queued input before `Prompted` makes it part of visible conversation history.
Execution routing starts from only the Session ID: