style(adminui): btn-groups + prose trim on top-level ops pages

Group related action buttons into btn-group/btn-group-sm on Alerts, Certificates,
ApiKeys and ScriptEdit; promote the RoleGrants Delete from btn-link to
btn-outline-danger. Replace the two inline style="border-color:var(--alert)"
no-ops with the .notice-alert class, and the undefined --surface-2 token in
Scripts with the theme's shipped --zebra-bg.

Delete unconditional documentation prose now covered by docs/ (Redundancy,
Telemetry, AlarmTracking, security, Reservations, AlarmHistorian, ScriptEditor),
keeping state banners and live captions. Correct the LDAP config key on
RoleGrants to Security:Ldap:GroupToRole (LdapOptions.SectionName) and drop the
same wrong key from Account with its deleted block; reword the stale
"Engine emit (F8/F9) is pending" script-log empty state.

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Reservations.razor

@@ -16,12 +16,6 @@
 }
 else
 {
-    <section class="panel notice rise" style="animation-delay:.02s">
-        External IDs (ZTag, SAPID) are reserved fleet-wide via this table. Reservations bind a
-        value to an Equipment's UUID so the ID can move with the equipment across cluster
-        reshuffles without colliding with another cluster's equipment.
-    </section>
-
     <section class="panel rise mt-3" style="animation-delay:.08s">
         <div class="panel-head">@_rows.Count reservation@(_rows.Count == 1 ? "" : "s")</div>
         @if (_rows.Count == 0)