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.
versitygw.sh additionally gains a trailing newline; it lacked one.
With this batch every ct/ script is on the core engine.
* fix(twingate-connector): perform real apt upgrade during update flow
The update path used ensure_dependencies, which only installs missing
packages and does not upgrade already installed ones. As a result, users
could see 'Updated successfully' even when a newer twingate-connector
version was available.
Switch update_script to a real package update flow:
- ensure apt is healthy
- refresh apt metadata
- install/upgrade twingate-connector via retry helper
- restart service
This aligns behavior with Twingate's documented upgrade process.
* Update twingate-connector.sh
