feature: the package installs the Router Manager, which is no longer a package of its own.

docs/backup.md

@@ -0,0 +1,25 @@
+# Backup
+
+The router's backups: to a local folder, copied to the cloud with rclone, or to a Proxmox Backup
+Server.
+
+## Sections
+
+- **Settings:** whether scheduled backups run, the schedule (hourly, daily or weekly), the target
+  and whether the metrics database is included. A local folder also shows the folder, the archives
+  kept and the cloud copy; a Proxmox Backup Server the repository, whether the token secret is
+  set, the fingerprint, the namespace and the encryption key file.
+- **Last run:** its result, times, archive or snapshot, size, cloud copy and error, and the next
+  run.
+- **Local archives:** with their times and sizes, searched by name and time, 10, 25, 50 or 100 at
+  a time.
+- **Warnings:** the PBS client or rclone the settings need is not installed on the router.
+
+## Actions
+
+- **Edit:** changes the settings in one dialog. Only the retention settings that apply to the
+  schedule are offered. The rclone remote is one of the router's `/etc/vpn-router/rclone.conf`,
+  with a path and the mode, sync or copy. The token secret is kept when left empty.
+- **Run now:** starts a backup; the tab reads every 3 seconds until it ends.
+
+Restoring is done on the router as root with `vpn-router-backup restore`.