One-command screenshot helper around gd-77_screen_grabber.py: auto-detects the
radio's serial port (cu.usbmodem* on macOS, ttyACM* on Linux) and creates a
self-contained Python venv with pyserial + pillow on first run. Saves to
screenshots/ (gitignored, along with the venv). Documented in TOOLS.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- README: add 'What's different from OpenGD77' (incl. the new SK2 mute) and a
dedicated 'Flashing' section (DFU steps, per-model flash.sh, donor note).
- scripts/forgejo-release.sh: build/attach a single platform or all, reuse an
existing release, replace same-named assets, and warn if freetrxVersion.h
doesn't match the tag.
- TOOLS.md: document the platform build argument.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>