- add section.erklaerung CSS class with pink theme styling
- add 6 explanation slides to 01-geschichte-grundlagen-html.md
- add 10 explanation slides to 02-netzwerke-protokolle-css.md
- each slide includes definition, key points, and mnemonics
split klausurfragen by course with appropriate CI:
- 223015b: blocks J-O (dateiformate) with blue CI
- 223015c: blocks A-I (IT-grundlagen) with pink CI
preserves existing disable markers for non-klausur questions
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- simplify development: single marp server on port 3000 instead of 3 processes
- rename klausur to klausurfolien for better naming
- update extract script to use 00-intro.md as template when no 01-*.md exists
- update makefile and package.json for new workflow
- add comprehensive AGENTS.md guidelines