fix: correctly set isComplete in metadata

[sestinj]

Description

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Summary by cubic

Ensure agent turns are correctly marked complete by setting isComplete: true when updating metadata after a successful turn, preventing consumers from treating the turn as in-progress.

• Bug Fixes
  • Pass { history, isComplete: true } to updateAgentMetadata in serve.ts.

^{Written for commit fd5701d. Summary will update on new commits.}

[github-actions]

✅ Review Complete

Code Review Summary

⚠️ Continue API authentication failed. Please check your CONTINUE_API_KEY.

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[cubic-dev-ai]

No issues found across 1 file