Correct recovery guidance and setup credential encoding

Preserve Vault and remote data before deleting a Fly.io instance. Build cluster setup JSON with jq and ConvertTo-Json so credential characters remain intact.

Also include the starting status icon and clarify the CouchDB hosting category.

docs/tips/status-display.md

@@ -9,6 +9,7 @@ Use [General Settings](../settings.md#2-general-settings) to choose whether sync
     -   🌐N Approximate remote requests currently in progress
 -   Status
     -   ⏹️ Stopped
+    -   🌀 Starting synchronisation
     -   ⏩ Comparing CouchDB change history, including entries already held locally
     -   💤 LiveSync enabled. Waiting for changes
     -   ⚡️ Synchronisation in progress