FDX-B 134.2 kHz RFID reader

No, those documents are from the developer (email included in docs). I don't understand the PCB printing 5V+10R in the context of the ESP32.

Diagram above was intended to show battery (specs above) is ultimate power source. Let's be clear, GND connects all modules.

This is a fill-in the gaps exercise. The issue is exactly what connection and components to get 3.3V to the ESP32?