Merge pull request 'docs: correct admin-credentials help text (fixes #34)' (#35) from docs/admin-creds-help-text into main

web/templates/pages/host_repo.html

@@ -82,10 +82,14 @@
         <div class="text-[12px] text-ok mb-3 mono">✓ saved</div>
       {{end}}
       <p class="text-[12.5px] text-ink-mid leading-[1.6] mb-4 max-w-[640px]">
-        Only needed for rest-server repos that distinguish an append-only
-        user (everyday backups) from a delete-capable user (prune /
-        forget). For S3 / B2 / SFTP / local, leave this blank — the
-        everyday repo credentials handle prune too.
+        Required for prune. On rest-server repos this is the
+        delete-capable user, as distinct from the append-only user used
+        for everyday backups. Note that <strong>forget</strong> always
+        runs with the everyday repo credentials, so those must have
+        delete authority. For S3 / B2 / SFTP / local, enter the same
+        delete-capable repository credentials here if you want prune
+        enabled. <strong>Prune is skipped when admin credentials are
+        unset</strong>, on any backend.
       </p>
       <div class="grid grid-cols-2 gap-4">
         <div>