blog: make post claims accurate and citable, resync all translations

English posts state the licensing, upgrade, traffic, compliance and
platform facts precisely (upgrades extend to a full year rather than
being prorated, Server OSS vs proprietary Server Pro, iOS controller
only, Wayland multi-monitor since 1.4.3) while answering FAQs directly.
The ten translations are realigned paragraph by paragraph with the
English, replacing stale claims, pasted template paragraphs and
find-and-replace errors. The console guide now documents configurable
audit-log retention.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

content/self-host/rustdesk-server-pro/console/_index.en.md

@@ -102,7 +102,7 @@ The `Individual` plan does not have this feature.
 ## Viewing Logs
 On the left hand side click on `Logs`. The console lists the connection, file-transfer, alarm, and console-operation (audit) logs; you can also query and export them through the `audits.py` API.
 
-Server Pro includes **built-in audit-log rotation**, so these audit logs are bounded rather than growing indefinitely — helpful for storage-limitation and data-retention requirements.
+Server Pro supports **configurable audit-log retention** under **Settings > Other > Log Retention (Days)**. A value of `0` keeps logs indefinitely; a positive value deletes records older than the specified number of days, with cleanup once per hour. Configure the period for your retention policy and manage exported copies and backups separately. See [log visibility and retention](/docs/en/self-host/rustdesk-server-pro/audit-logs/#log-visibility-and-retention).
 
 ## Setup Emails
 Gmail in this example