Add Power C skill and VICE disk-automation notes
- skills/powerc: K&R dialect limits, shell/editor, cc/link pipeline, library, ML interface
- vice-emulator skill: keybuf rules, warp, c1541 PETSCII source files, Power C workflow
- examples: powerc-ced.bat, powerc-build.bat
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Daniel Covington