Rewrite the routine-redeploy section around update-all.sh (rolling vs --hard),
list the steps it runs, note the python>=3.11 requirement for build-modlist on
cochi (default python3 is 3.10), and that www/ + mods.json are generated every
run. The deploy skill = pull + fetch-authlib + ./update-all.sh --hard.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>