[PER Agent] Performance: Process additional info as traces during reflection if provided

[pyek-bot]

Description

This PR adds the additional_info response to planner prompt from executor agent if provided. This allows exposing raw tool results to the planner. This is not for reflecting the raw tool results to the user.

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.14%. Comparing base (5964268) to head (51b38f2).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4369      +/-   ##
============================================
+ Coverage     80.09%   80.14%   +0.05%     
- Complexity    10199    10217      +18     
============================================
  Files           855      855              
  Lines         44374    44433      +59     
  Branches       5135     5140       +5     
============================================
+ Hits          35540    35610      +70     
+ Misses         6670     6664       -6     
+ Partials       2164     2159       -5     

Flag	Coverage Δ
ml-commons	80.14% <100.00%> (+0.05%)	⬆️

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