This change removes always-on debug paths and wraps the diagnostic file dumps in #ifdef DEBUG, so normal builds no longer carry extra debug behavior unless it’s explicitly enabled. It also replaces the NEW_API flag with #ifndef OLD_API, making the newer Radio Browser API the default while still preserving compatibility with the legacy path when needed. The result is a tidier configuration model and less accidental debug noise in everyday use.

Refactored ziptuner.c to gate debug output behind DEBUG and switch API selection to an OLD_API opt-out model for cleaner builds. - zhengqunkoo/ziptuner