The recovery envelope no longer lands in /root/ — code was cleaned up
earlier this cycle to keep the keyfile and its envelope exclusively at
/usr/local/share/proxmenux/. The glossary entries for "Recovery envelope"
(EN) / "Sobre de recuperación" (ES) still described the /root/ mirror
as an "offsite backup" / "respaldo local", which is now inaccurate.
Removes the trailing sentence from both entries.
- Add Backup & Restore glossary (ES + EN) linked from the PBS encryption section
- Rewrite PBS client-side encryption block in plainer language and reinforce keyrecovery security callout (AES-256 + PBKDF2 wrapping happens on the host before upload)
- Add "Recommended frequency" callout to the scheduled-jobs page
- Gloss technical terms (rootfs, layout, fingerprint) inline; drop "instalación fresca" wording in favour of "equipo recién instalado"
- Restoring page screenshot updates from prior work
