Browser-rendered windowed desktop for microcontrollers: the firmware describes apps, windows and widgets (retained tree) and a web app draws and operates them over WebUSB / Web Serial; plus a stdout/stderr log capture ring
Multiplex several framed protocols (OTA, crash-dump, CAN bridge, app control, ...) over one byte stream: parses the stream_frame codec once and routes each frame to a per-module handler by the frame's module byte
Tiny dependency-free wire-framing codec: CRC-32 length-delimited typed frames with an incremental, resynchronizing StreamParser for carrying messages over any raw byte stream (USB/CDC/socket/UART)