fix: harden sweeper and extend tests to cover stranded pubs..

[cloedu87]

Pull Request

Description

• Disable PublicationVerification via API call --> improvements and better handling
• refactoring
• testing

Related Issue

#1088
#1089

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactoring (no functional changes)
• Performance improvement
• Test update
• Build/CI update
• Other (please describe):

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have updated the version number if appropriate
• I understand and agree that my contributions will be licensed under the project's GNU AGPL-3.0 License

License Compliance

• My changes comply with the GNU AGPL-3.0 license requirements
• If my changes involve network interaction, I've ensured users can access the corresponding source code