- Introduced `countryCode` and `stateCode` fields in the Club model to support regional calendar data.
- Updated ClubSettings component to allow users to select their country and state, enhancing the configuration options for clubs.
- Enhanced the ClubService to handle normalization of country and state codes during updates.
- Added new routes and middleware to support the training cancellation feature and calendar integration in the backend.
- Updated frontend navigation to include a calendar link, improving user access to scheduling features.
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