v2.2.0

What's Changed

Comprehensive code simplification and cleanup with no functional changes.

Improvements

• Extracted duplicated logic into private helper methods across payment types
• Added proper Builder type hints and return types to query scopes
• Simplified terminal observer sync logic
• Improved test quality with proper mocked unit tests

Cleanup

• Removed redundant comments, docblocks, and section header dividers
• Standardized string formatting (interpolation over concatenation)
• Replaced loose == comparisons with strict ===
• Used imports over fully qualified class names throughout
• Updated PHPStan baseline

Full Changelog: v2.1.1...v2.2.0