Wip 0.4.4

[dpieski]

Description

Adds three convenience methods to PatentDataClient: get_patent(), get_publication(), and get_pct() for looking up patent file wrappers by patent number, publication number, or PCT number respectively. Also fixes sanitize_application_number to strip leading zeros from PCT serial numbers.

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
• Code refactoring

Testing

• 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
• I have tested this manually (if applicable)

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my own 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
• Any dependent changes have been merged and published

Related Issues

Closes #109

Additional Notes

• get_patent(patent_number) and get_publication(publication_number) use search_applications with the appropriate query parameter and return the first result.
• get_pct(pct_number) auto-detects the input format: PCT application numbers (starting with "PCT") use direct lookup via get_application_by_number, PCT publication numbers (starting with "WO") use search via pctPublicationNumber_q.
• sanitize_application_number now strips leading zeros from the PCT serial portion (e.g., PCT/US2025/047756 → PCTUS2547756).
• 173 unit tests and 28 integration tests pass.