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feat: builtin agent session resume via deterministic message reconstruction #427

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xiaomo merged 1 commits from feat/426-builtin-session-resume into main 2026-05-23 09:39:33 +00:00
Conversation 1 Commits 1 Files Changed 12
+305 -52

1 Commits

Author SHA1 Message Date
xingyue 080792a6c0 feat: builtin agent session resume via deterministic message reconstruction (#426) 
- StepRecord adds edgePrompt field (backward compat: defaults to "")
- StepNode CAS schema includes edgePrompt
- writeStepNode persists ctx.edgePrompt
- buildHistory exposes edgePrompt in StepContext
- buildBuiltinMessages reconstructs multi-turn moderator↔agent conversation:
  system = role prompt + output format (stable prefix)
  per prior visit: user (edgePrompt + inter-step summary) + assistant (output)
  current: user (edgePrompt + recent summary)
- Zero extra persistence — pure function of CAS chain
- Stable prefix for LLM prompt cache hits
- 10 builtin tests pass, all other package tests pass
 2026-05-23 17:34:49 +08:00