Noise-Proof PNP-ESP32 Wiring

I need a rock-solid wiring solution that lets my 12 V PNP proximity sensor talk to an ESP32 inside a stamping factory filled with motors, EMI and loud press strokes. Missed pulses are unacceptable, so every connection, filter and ground scheme has to be bulletproof.

Here is what I already know and want:
• Sensor: 12 V PNP proximity type.
• Logic: ESP32 powered from the same 12 V rail through a regulator—please specify the exact regulator module and any extra filtering you recommend.
• Isolation/noise control: I will be using a PC817 optocoupler as the front-end isolator.

Your job is to deliver a complete, ready-to-build wiring diagram that covers the sensor, PC817 interface, regulator, decoupling components, shielding strategy and common-ground layout. Include component values, part numbers and a brief note on why each piece is placed where it is. If a small RC or TVS network is required to tame transients, show that too.

Acceptance criteria
1. Schematic and simple PCB/strip-board layout (PDF or KiCad) that can be followed by a technician.
2. Bill of materials with ordering links.
3. Short ESP32 sample code (Arduino framework is fine) that confirms every sensor transition without misses at typical factory pulse rates.
4. Practical wiring tips: cable type, shielding termination, earth/0 V reference strategy.

Keep the explanation concise but complete so I can hand it straight to the shop floor and expect it to work first time.