✅ Add visual FFmpeg profile builder

✅ Support direct FFmpeg commands when creating streams

✅ Add stream groups and filtering

✅ Add memory, progress and process activity monitoring

✅ Add configurable date and time formats

✅ Add syntax highlighting for FFmpeg commands

✅ Improve profile editor with dynamic fields and tooltips

✅ Introduce new Cesbo licensing system

✅ Add offline license grace period

✅ Add profile type indicators

✅ Improve dashboard with additional metrics

✅ Standardize REST API errors (RFC 7807)

✅ Improve process lifecycle stability

✅ Fix race conditions and goroutine leaks

✅ Fix CPU usage calculation and display

✅ Fix configuration backup and atomic writes

✅ Fix remote server process management

✅ Fix multiple frontend and backend issues