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deepseek-harness/docs/graphs/snapshot-replay.md
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2026-07-03 01:13:52 +08:00

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# ACP Snapshot Replay
Maintenance mode: curated Mermaid sequence based on the snapshot test harness.
This graph explains what a snapshot scenario proves: recorded real-model session logs are replayed keylessly, then ACP stdout is normalized and diffed.
```mermaid
sequenceDiagram
participant Recorder as Real API recording
participant Fixture as snapshot fixture
participant Replay as llm-replay adapter
participant ACP as acp-agent subprocess
participant Golden as stdout golden
Recorder->>Fixture: session.jsonl + workspace inputs
Fixture->>Replay: recorded StreamChunk script
Replay->>ACP: deterministic llm/stream chunks
ACP->>Golden: normalized sessionUpdate stream
Golden-->>ACP: diff must be empty
```
Future pressure from the fs stack: policy rejection scenarios are valuable because they prove both world state and failed tool-card rendering, not just that replay returns text.