Re: advice on NFC/ESP32 low power device

Thanks for your time and Effort! I'm currently short on time to redesign it now but I will try to answer some of cast some more of mine:
1- Battery reverse voltage protection is a good idea as I will use 18650 flat head batteries.
2- You suggested a PMOS for the voltage divider circuit, but doesn't the uController stops providing voltage in deep sleep and thus keeps the switch open?
3- I used some trace calculator https://www.7pcb.com/trace-width-calculator.php and it says 10mil for 30C+ which seems reasonable for no more than 5 seconds of continuous operation. The motor is actually an electromagnet that retract a metal to open a door. Could I use lower power if use pwm switching for the mosfet? Because it seems to need less power to hold it's place than to actually move.
4- What benefit does 100k do vs 10k?
5- Forget about the led I'll probably just remove it as it didn't have much purpose.
6- Communication is through SPI, I think it's software instead of hardware so might change the pins if it's the case. What's a good value for a terminations resistance?
7- IO21 is for operating the mosfet of the NFC module. Is there something wrong with the connections?
8- Battery should probably live for 20 days at least to be acceptable. Also forgot to mention that in a normal use case, it won't be operating more than 10 times a week. The rest of the it's just being in deep sleep.
9- If my calculations are correct the voltage of the divider should be 1/3ish of vbattery. So voltage should be between 2.8V-2V (which seems good range for ADC?). Feel free to correct me if my calculations is wrong.

The rest is kind of agree / didn't realize situation. I will surely look into it.
Thanks again for your precious time!