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  • Fix changes field access: program.get("changes") → program.get("metadata", {}).get("changes")
  • Fix parent_metrics field access: program.get("parent_metrics") → program.get("metadata", {}).get("parent_metrics")

These fields are stored in Program.metadata but were being accessed at the top level, causing evolution history to always show "Unknown changes" instead of actual modifications.

Fixes #203

…nce#203)

- Fix changes field access: program.get("changes") → program.get("metadata", {}).get("changes")
- Fix parent_metrics field access: program.get("parent_metrics") → program.get("metadata", {}).get("parent_metrics")

These fields are stored in Program.metadata but were being accessed at the top level,
causing evolution history to always show "Unknown changes" instead of actual modifications.

Fixes algorithmicsuperintelligence#203
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CLAassistant commented Aug 12, 2025

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All committers have signed the CLA.

@codelion codelion merged commit 5352eb9 into algorithmicsuperintelligence:main Aug 15, 2025
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wangcheng0825 pushed a commit to wangcheng0825/openevolve that referenced this pull request Sep 15, 2025
…bug/prompt-sampler-metadata-access

Fix metadata field access in PromptSampler (algorithmicsuperintelligence#203)
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Bug: Incorrect metadata field access in PromptSampler causes "Unknown changes" in evolution history

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