Add: GMP commands for agents and agent groups in GmpNext

[ozgen]

What

Add support for managing agents and agent groups via new GMP commands in the next protocol.

Why

These changes are necessary to align GMP command coverage with the latest backend capabilities for agent and agent group management.

References

GEA-1173

Checklist

• Tests

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Snapshot Warnings

⚠️: No snapshots were found for the head SHA d0485a9.

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Scanned Files

None

[github-actions]

Conventional Commits Report

Type	Number
Added	1

🚀 Conventional commits found.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.03%. Comparing base (590f0fa) to head (d0485a9).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1248      +/-   ##
==========================================
+ Coverage   97.98%   98.03%   +0.04%     
==========================================
  Files          83       85       +2     
  Lines        5514     5639     +125     
  Branches      965      988      +23     
==========================================
+ Hits         5403     5528     +125     
  Misses         75       75              
  Partials       36       36              

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