`apt install p7zip*` only still resolves on Debian 13 / Ubuntu 24.04+
because the renamed `7zip` package happens to declare `Provides: p7zip`.
That is an alias we don't control, so pick the real package name against
the freshly-updated lists instead: `7zip` where it exists, `p7zip-full`
otherwise. Match on a real package stanza rather than apt-cache's exit
status, which returns 0 with empty output for provided-only names.
Also in this path:
- apt -> apt-get for the scripted calls, so the "apt does not have a
stable CLI interface" warning stops polluting the captured $result.
- drop a duplicated `pv` from the package list.
- move the package list below `apt-get update` so the 7-Zip probe reads
current lists.
Debian 10 sysctl check now reads OS_TYPE/OS_VERSION from detectOS rather
than shelling out to lsb_release, which minimal images don't ship. This
also stops a non-Debian release numbered "10" from matching.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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