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/40-editors.css

@@ -1,6 +1,4 @@
-/* Shared service editors: Vhosts, backends, Web Server, Streams, routing and ACL pickers.
- * Order is defined in manifest.json; responsive rules are centralized in 70-responsive.css.
- */
+/* Shared service editors: Vhosts, backends, Web Server, Streams, routing and ACL pickers */
 
 .host-chip-editor.field-invalid,
 .listener-choices.field-invalid {