- 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
