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Merge remote-tracking branch 'origin/master' into session-fork

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Hypatia May
2026-07-07 09:21:01 +08:00
parent 3e44860544 dc5656fab3
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2
packages/support/llm-replay/README.md
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@@ -6,7 +6,7 @@ Its consumer is the ACP snapshot harness in `examples/acp-agent`, which loads th
## How the fixture works
The fixture IS the persisted session log (`<scenario>/session.jsonl`). Its `assistant/chunk` events carry every `StreamChunk`, so grouping them by `(turn, step)` reconstructs each `stream()` call's chunk sequence (one model call per loop step). Recording is therefore "run the real agent once and harvest the `.jsonl`", done by the snapshot harness — this plugin does not record.
The fixture IS the persisted session log (`<scenario>/session.jsonl`). Its `assistant/chunk` events carry every `StreamChunk`, so grouping them by `(turn, step)` reconstructs each `stream()` call's chunk sequence (one model call per loop step). Recording is therefore "run the real agent once and harvest the `.jsonl`", done by the snapshot harness — this plugin does not record. A fixture may carry its `request/header` content tokenized to `{{system}}`/`{{tools}}` (the harness pins that content in one scenario and scrubs the rest); replay is indifferent — derivation reads only `assistant/chunk` events and the line-0 session header.
Two failure modes are not reconstructable from `assistant/chunk` alone — a pure throw before any chunk (e.g. an HTTP 401, where the log holds only a `turn/end {error}` and no chunks) and a cancel/hang (timing, not chunk content). A scenario that needs those supplies an optional sidecar (`<scenario>/replay.override.json`: a `ReplayEntry[]`) that REPLACES the derived script.

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packages/support/llm-replay/src/index.ts
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@@ -12,7 +12,11 @@
* `(turn, step)` reconstructs each `stream()` call's chunk sequence (one model
* call per loop step — see packages/core/agent-loop/src/loop.ts). Recording is
* therefore "run the real agent once and harvest the `.jsonl`", done by the
* snapshot harness — this plugin does not record.
* snapshot harness — this plugin does not record. A fixture may carry its
* `request/header` content tokenized to `{{system}}`/`{{tools}}` (the harness
* pins that content in one scenario and scrubs the rest); replay is
* indifferent — derivation reads ONLY `assistant/chunk` events and the line-0
* session header.
*
* A NESTED-agent scenario records more than one log: the parent plus one per
* in-process subagent (each subagent runs as its own {@link Session} on the same