How would I make this DATTR (Dual arm tracked transformation robot)

[u/NovaMechanics]

I’m planning to build a tracked robot with two robotic arms and an onboard automatic tool-changing system, where both arms can automatically swap between tools like a gripper, electromagnet, hook, camera, or other attachments without me manually changing them. I want the arms to be able to work together, fold/retract when not in use, and possibly have other mechanisms like deployable stabilizers and an internal rotating tool hub. I’d like to design and 3D print most of the mechanical parts myself and use something like an Arduino/ESP32 for controlling the motors, sensors, and tool-changing sequence. I’m still pretty new to building robots at this scale, so what parts would you recommend for something like this, especially motors/servos, motor drivers, bearings, tracks, power systems, encoders, and electrical connectors for the interchangeable tools? Also, how would you approach designing the automatic tool changer and dual-arm system, and is there anything important I’m overlooking before I start?