- Introduced a new field `custom_phone_number` in the CardPolicy model and database schema.
- Updated the API to handle custom phone number input, including validation and normalization.
- Modified the CardPolicyPanel component to allow users to set and save a custom phone number.
- Enhanced the settings API to include the custom phone number in responses and updates.
- Added tests to ensure the correct functionality of custom phone number handling.
- Removed hardcoded environment variable for VOCAT_ADDR in service files.
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