You can use 4.5 Opus with Claude Code by running it specifically with `--model` pointed towards 4.5 Opus:
$ claude --model claude-opus-4-5
Claude Code v2.1.37
claude-opus-4-5 · Claude Max
/tmp/test
Opus 4.6 is here · $50 free extra usage · /extra-usage to enable
Immich is extremely stable even if not labeled as such. My personal experience is zero maintenance (other than updating docker container) since deployment several years ago.