refactor: remove optimized-code tag from subagent XML output

[aseembits93]

Summary

• Removes the <optimized-code> tag from the subagent XML output in subagent_log_optimization_result, which was embedding full file contents redundantly
• Updates action instructions to direct the subagent to apply changes from the diff instead

Test plan

• Verify subagent mode optimization flow still works correctly using only the diff for applying changes

🤖 Generated with Claude Code

[claude]

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PR Review Summary

Prek Checks

All checks passed — ruff format and ruff lint both clean on changed files.

Code Review

The change is clean and focused. Removing <optimized-code> tags makes sense since the diff is already included in the XML and the subagent can apply changes from it directly. Full file content was redundant.

One minor point worth noting (pre-existing, not introduced by this PR):

Edge case: files added by optimization — The diff is built by iterating over original_code keys (for path in original_code: at console.py:432), which means if an optimization ever added a new file (present in new_code but absent in original_code), it wouldn't appear in the diff. The old <optimized-code> loop iterated over new_code keys so it would have captured such files. In practice, CodeFlash optimizations don't add new files, so this is a theoretical concern only.

No functional bugs in the changes themselves.

Duplicate Detection

No duplicates detected.

Test Coverage

codeflash/cli_cmds/console.py has 19% coverage (pre-existing). No unit tests exist for subagent_log_optimization_result. Test suite has 8 pre-existing failures in test_tracer.py unrelated to this PR (3549 passed).

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Last updated: 2026-03-16