Patch release following the v1.4.1 MyFatoorah refund source-watch update.\n\nChanges:\n- Updated the Python installer to use GH_TOKEN or GITHUB_TOKEN for latest-release GitHub API and zipball downloads.\n- Prevents authenticated maintainer runs from failing on unauthenticated GitHub API rate limits.\n- Added regression coverage for authenticated updater request headers.\n\nValidation passed before release: validate_skill, validate_adapters, validate_source_watch, secret_scan, check_source_links, check_source_changes --check, eval scenario validation, unit tests, installer dry-run, and git diff --check.