docs: add build-doc tooling and a README for every example

2026-06-29T03:16:25Z

Documentation tooling: - Add the `build-doc` skill and `tools/build_doc.py` wrapper for local Sphinx builds (clean / -W / open). - Enable Markdown (MyST) in conf.py and auto-collect examples/{device,host,dual}/*/README.md into a 3-level Examples nav (Examples > Device/Host/Dual > example), noting each page's source location and normalizing headings to a single H1. - Remove the stale `.claude/commands/build-doc.md`; point the AGENTS.md Documentation section at the skill. Example docs: - Add a README.md for every device/host/dual example: what it does, USB interface table, notable tusb_config.h settings, generic CMake + Make build steps, and how to try it. - Fold each *_freertos variant into its base README, noting the FreeRTOS source path and any RTOS-specific behavior. Generated docs/examples/ output is git-ignored. Builds clean with `sphinx-build -W`. Co-Authored-By: Claude Opus 4.8 (1M context)

example: add MIDI 2.0 Device example (midi2_device)

2026-05-12T14:07:44Z

Add Device example that plays Twinkle Twinkle Little Star using native UMP format. Demonstrates all MIDI 2.0 Channel Voice message types: 16-bit velocity, 32-bit CC, 32-bit pitch bend, 32-bit channel/poly pressure, per-note management, program change with bank select, and JR timestamps. USB descriptor exposes both Alt Setting 0 (MIDI 1.0) and Alt Setting 1 (UMP) per USB-MIDI 2.0 specification. Tested on: Raspberry Pi Pico (RP2040), Linux (ALSA), Windows (MIDI Services)

tinyusb.git/examples/device/midi2_device/README.md, branch master

docs: add build-doc tooling and a README for every example

example: add MIDI 2.0 Device example (midi2_device)