- Fix critical fee calculation bug: Now gets exact melt quote before creating invoice
- Improve spent token detection: Only marks as spent with clear indicators
- Add spent field to decode endpoint response (always boolean)
- Add informative root endpoint with API documentation
- Update documentation examples to use cashuB format
- Install bolt11 library for proper Lightning invoice verification
- Enhanced error handling and logging throughout
This fixes the issue where users lost sats due to fee estimation errors
and ensures accurate token spendability detection.
