Upgrade Alice to Bookworm (kernel 6.1.21 from 2023)

[blackboxprogramming]

Node: Alice (.49) | Priority: Medium

Alice running kernel 6.1.21 from 2023. Needs full OS migration to Bookworm.

• Alice is the main gateway (48+ domains, Pi-hole, PostgreSQL, Qdrant)
• Plan carefully — downtime affects all tunnel traffic
• Back up SD card first, test on spare if possible