improve termin 1 to match termin 0 quality
- frontpage: black bg, title, 223015b, git link
- email: mail@librete.ch (both files)
- remove forum references (no forum for 60 students)
- remove screenshot requirements (just experiment)
- simplify fleißaufgaben (no submission, discuss next week)
- deepen speaker notes for bits/bytes beginners:
- bit (shannon, why binary)
- byte (why 8 bits, ibm history)
- 256 states (everyday examples)
- hexadecimal (why hex, conversion practice)
- magic numbers (security aspect)
- mp3 (4 steps simplified)