vicharak-in/shrike — reverse-engineered prompt

Build me an open source project for a low cost FPGA development board family called Shrike, aimed at students, makers, and hobbyists who want an easy way to get into FPGA and microcontroller projects. It should cover three board variants, Shrike Lite with RP2040, Shrike with RP2350, and Shrike Fi with ESP32 S3. I want the repo to feel complete, with hardware design files, clear documentation, starter examples, reusable code and utilities, and a few basic tests so people can actually learn from it and build things on top of it.

Please make the docs friendly and practical, including an overview of the boards, key features, pinouts, and how the FPGA talks to the microcontroller. Include simple example projects for blinking LEDs and basic IO, plus anything needed to program and experiment with the boards. Keep everything fully open source and beginner friendly. If you need details, look up the current Shrike docs online and align with that.