v0.35.1: performance, AGPL licensing and documentation overhaul

- Web Server reads static files inline; proxy middleware chain flattened
- About window with license summary and project links; AGPL-3.0-or-later
- Rewritten documentation: feature list, screenshots, performance guide
- Fix false spikes in per-Vhost request-rate charts

src/admin/web/css/50-settings.css

@@ -1,6 +1,4 @@
-/* Settings, certificates, integrations and Docker agent/service management.
- * Order is defined in manifest.json; responsive rules are centralized in 70-responsive.css.
- */
+/* Settings, certificates, integrations and Docker agent/service management */
 
 .settings-tabs button.has-unsaved:after {
   content: "";
@@ -1205,7 +1203,7 @@ html[data-dashboard-density=normal] #panel-overview .stat>span,
   width: 100%;
   min-width: 0;
 }
-/* 0.34.13: global security policy forms, grouped with clear control boundaries. */
+/* Global security policy forms */
 .global-policy-form .global-policy-section {
   display: grid;
   gap: 10px;