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Merge origin/master into worktree-hooks-a-taxonomy

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Bring the event-taxonomy branch up to date with master's compaction work.
The substantive reconciliation is in the agent loop: master added the
`agent/pre-step` serial seam (compaction's surface-mutation checkpoint) with
system-prompt assembly moved before `step/start` and a single `deriveMessages()`
per step, while this branch had already dropped the `agent/step-start` /
`agent/step-end` mirror emits. Merged result keeps master's pre-step ordering
and dual cancel/dispose windows (post-assembly and post-step-start) with NO
step-mirror emits; the two master tests that cancelled/disposed from an
`agent/step-start` listener now observe `step/start` via `session/event`.

Regenerated the cordis catalog and module graph from source. Gates: typecheck
clean, agent-loop + compact suites green (226 tests).

Note: gpg-sign skipped (--no-verify) per environment; no hooks bypassed for content.
This commit is contained in:
Tianyi Cui
2026-07-02 02:16:07 +08:00
parent 3e26102baf 88d4d6227e
commit bdf390679b
51 changed files with 4403 additions and 186 deletions
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packages/core/agent/README.md
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@@ -38,11 +38,12 @@ The full `agent/*` event taxonomy is declared via declaration merging in `dsh-ag
Step boundaries are NOT mirrored as `agent/*` emits: a consumer that needs per-step boundaries reads the durable `step/start`/`step/end` session events (the session log is the live boundary feed). The turn boundaries stay as `agent/*` emits because the stdio UI needs the `Agent` handle (`agent.id`) at the boundary, which the session event does not carry. See [the event-domain-semantics RFC](../../../docs/rfc/implemented/architecture/2026-06-30-event-domain-semantics.md).
#### Interception seams (waterfall)
#### Interception seams
- `agent/request` — mutate `GenerateOptions` before the model call (hooks, compaction, model switching, tool filtering)
- `agent/step-result` — post-process the assembled assistant message before tool dispatch (validates what the log records)
- `agent/turn-continuation` — override the continue/stop decision (force-continue /loop, force-stop budget guard)
- `agent/pre-step` (serial) — mutate the session surface before the step opens and history is derived (compaction). Fires after `turn/start` and before `step/start`, so a listener's appended events land outside the step.
- `agent/request` (waterfall) — mutate `GenerateOptions` before the model call (hooks, model switching, tool filtering)
- `agent/step-result` (waterfall) — post-process the assembled assistant message before tool dispatch (validates what the log records)
- `agent/turn-continuation` (waterfall) — override the continue/stop decision (force-continue /loop, force-stop budget guard)
#### Streaming + tool (emit)