feat(ardent): add github.com/idleberg/ardent

[idleberg]

Summary

• What changed: Add ardent binary
• Why: Useful for NSIS developers, that value formatted code

AI Intent

• Prompt or task statement:
• Scope of AI-assisted changes: The test was written by Claude

Risk Assessment

• Risk level: low / medium / high
• Primary risks:
• Compatibility impact:

Rollback Plan

• Revert path:
• Forward-fix path (if revert is not possible):

Validation

• Local checks run:
• CI checks expected:

Internal/Public Boundary Check

• No internal-only data, private URLs, secrets, or private runbooks were
  added.