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refactor agent pre-step inbox lifecycle

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_Kerman
2026-07-31 19:21:16 +08:00
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.agents/notes/implemented/architecture/2026-06-11-microkernel-event-taxonomy.md
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@@ -12,10 +12,10 @@ The product principle is "everything is a plugin": hooks, /goal, /loop, dynamic
Pure Cordis event taxonomy. The loop's extension seams are typed events with deliberate dispatch modes:
- **waterfall** (around-middleware) where plugins transform, veto, recover, or wrap: `agent/prompt-submit`, `agent/request`, `agent/request-error`, `agent/step-result`, `agent/turn-continuation`, `tools/pre-execute`, `tools/execute`, `tools/post-execute`, `llm/stream`, `system-prompt/assemble`.
- **serial** (awaited in listener order; a bail value stops later listeners) for ordered checkpoints: every `agent/pre-step` and `agent/post-step` listener runs when all abstain, while the first stop returned from `agent/turn-stop` makes the terminal decision final.
- **waterfall** (around-middleware) where plugins transform, veto, recover, or wrap: `agent/pre-step`, `agent/request`, `agent/request-error`, `tools/pre-execute`, `tools/execute`, `tools/post-execute`, `llm/stream`, `system-prompt/assemble`.
- **serial** (awaited in listener order) for ordered checkpoints such as `agent/turn-stopping`.
- **parallel** (awaited fan-out) where every listener must get an independent chance: the `session/flush` durability checkpoint.
- **emit** (synchronous fire-and-forget) for notifications: turn/step boundaries, stream chunks, lifecycle, errors, and the contained immutable `tools/result` observation.
- **emit** (synchronous fire-and-forget) for notifications: inbox transitions, lifecycle, errors, and the contained immutable `tools/result` observation. Durable session events own turn and step boundaries.
The event vocabulary lives in interface packages (dsh-agent declares the agent/* events); `@deepseek-ai/dsh-agent-loop` is the only concrete loop plugin and is itself swappable — nothing outside it may depend on it.