The licensing API documents retractLicenseConfig (project → billing account), but the CLI has no retract command — the license group has list and distribute only (grep -n retractLicenseConfig gem4gov.py → no matches). Add gem4gov license retract, optionally with a batch/range helper.

Use Case

Post-engagement license reclamation across a range of orgs/projects is entirely manual today. Operators reclaiming distributed licenses back to a central billing account have no scripted path.

Proposed Solution

Add gem4gov license retract wrapping retractLicenseConfig, mirroring distribute's structure; optionally a batch/range helper for operators reclaiming across many projects/orgs.

Compliance & Deployment Context

• Target Deployment Type(s):
  • US Region Restricted (e.g., Access Policy constraint)
  • FedRAMP Medium
  • FedRAMP High
  • DoD IL4
  • DoD IL5
  • All / General
• Relevant NIST 800-53r5 Controls: AC-2 (account management / deprovisioning).

Reusability Check

Stellar Engine prioritizes reusability.

• I have checked if this functionality can be achieved by extending an existing module or blueprint. (Extends the existing license group.)
• I have verified that this does not duplicate existing functionality.

Alternatives Considered

Manual reclamation via REST per project (current state); leaving licenses distributed (cost and audit hygiene both suffer).

Additional Context

Verified at main @ 3728fc98. Related: #100 (CLI→Terraform conversion).