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/30-overview.css

@@ -1,6 +1,4 @@
-/* Overview metrics, charts, dashboard density, inline layout controls and presets.
- * Order is defined in manifest.json; responsive rules are centralized in 70-responsive.css.
- */
+/* Overview metrics, charts, dashboard density, inline layout controls and presets */
 
 html[data-theme=ultra_dark] :is(.card, .stat, dialog) {
   box-shadow: 0 6px 24px rgba(0, 0, 0, .18);
@@ -76,8 +74,7 @@ html[data-theme=cream] :is(.card, .stat, dialog) {
   stroke-dasharray: var(--chart-grid-dash, 2 5);
 }
 
-/* Optional X/Y scale readouts do not change SVG coordinates or chart ranges.
- * Labels are HTML, not distorted SVG text under preserveAspectRatio="none". */
+/* Axis labels are HTML overlays, not stretched SVG text. */
 .rp-chart-axis-host {
   position: relative;
   display: flow-root;