- Fix timezone preservation in to_ical_simple() for import module
- Add timezone comparison to needs_update() method to detect timezone differences
- Add comprehensive test for timezone comparison logic
- Log Bug #3: recurring event end detection issue for future investigation
- Add #[cfg(test)] attribute to mark function as test-only
- Add comprehensive test for parse_ical_datetime function
- Move imports into function scope to reduce global imports
- Test covers DATE format, UTC datetime format, and error handling
Fixes warning: function 'parse_ical_datetime' is never used
- Rust-based CLI tool for Zoho to Nextcloud calendar sync
- Selective calendar import from Zoho to single Nextcloud calendar
- Timezone-aware event handling for next-week synchronization
- Comprehensive configuration system with TOML support
- CLI interface with debug, list, and sync operations
- Complete documentation and example configurations
