MP3 Player U2.1

Purpose
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ESP32 based MP3 Player using the Project UNION platform.

Important
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This documentation accompanies the supplied source code.
No modifications have been made to the source files.

Recommended workflow:
- Install required Project UNION libraries.
- Open the sketch in Arduino IDE.
- Verify GPIO assignments against the hardware diagram.
- Compile and upload without changing the source.

If inconsistencies between code and documentation are found, they are reported rather than corrected automatically.