- Box large enum variants in EventData to reduce memory footprint
- Add Default trait implementations for types with new() methods
- Replace or_insert_with(Vec::new) with or_default()
- Convert vec init+push patterns to vec! macro
- Fix field reassignment with default initialization
- Convert match to if for simple equality checks
- Remove unused Backend type parameters from TUI draw functions
- Apply rustfmt formatting
All tests passing (24 total). Zero clippy warnings. Ready for CI/CD.
