* fix(poznote): align nginx config with upstream Docker defaults
* fix(poznote): run init.sh on install and update, not just in Docker
* fix(poznote): add systemd units for the reminder-email and s3-backup workers
* fix(poznote): retrofit nginx config and worker services on update, sanitize timeout comment
* fix(poznote): silence init.sh output and consolidate worker enable/start
* fix(poznote): update ct/poznote.sh to use new default bootstrapper
Replaces the misc/build.func bootstrap with the two-root core loader.
No other change: the engine contract (var_*, update_script, start,
build_container, description) is identical on both engines.
