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Merge remote-tracking branch 'origin/master' into worktree/semantic-session-checkpoints

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# Conflicts:
#	docs/architecture.md
#	docs/event-producer-consumer.md
#	examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl
#	packages/core/agent-loop/README.md
#	packages/core/agent-loop/src/loop.ts
#	packages/core/agent-loop/tests/cancel.spec.ts
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Yichen Jiang
2026-07-22 10:29:09 +08:00
parent 6120728580 562a7f9da2
commit 28b358650b
419 changed files with 14937 additions and 7239 deletions
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packages/session-persistence/session-checkpoint-policy/README.md
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@@ -16,7 +16,7 @@ This zero-config function plugin consumes `ctx.sessions`, `ctx.llm`, `ctx.tools`
Persistence and checkpoint scheduling are intentionally separate Cordis plugins. A persistence backend makes each requested `session/flush` durable; this policy chooses the request, tool-dispatch, and completed-step checkpoints. Loading a backend without this policy is valid and retains checkpoints requested by the loop, including final `turn/end`, but crash recovery may lose the rest of an in-flight turn. First-party persisted apps and runtimes mount both plugins explicitly; a specialized deployment may deliberately omit or replace the policy.
The policy wraps `llm/stream` lazily, so the downstream stream is not constructed until the live session's buffered request events are durable. It wraps `tools/execute` after pre-execute policy and guards; a top-level tool body runs only after its recorded call is durable. If cancellation lands while that flush is pending, the wrapper returns the canonical `ABORTED` result without entering the tool body. Nested tool dispatches reuse the outer model-visible call's checkpoint. `agent/post-step` persists the complete response/result batch before continuation work.
The policy wraps `llm/stream` lazily, so the downstream stream is not constructed until the live session's buffered request events are durable. It wraps `tools/execute` after pre-execute policy and guards; a top-level tool body runs only after its recorded call is durable. If cancellation lands while that flush is pending, the wrapper returns the canonical `ABORTED_BEFORE_DISPATCH` result without entering the tool body. Nested tool dispatches reuse the outer model-visible call's checkpoint. `agent/post-step` persists the complete response/result batch before continuation work.
The loop records its assistant message and ordered tool results before dispatching `agent/post-step`, so the policy always captures that core batch. An event appended by another `agent/post-step` listener is captured at this checkpoint only when that listener is registered before the policy; Cordis registration order is the explicit composition rule for such extensions.