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/tests.rs

@@ -1043,8 +1043,7 @@ mod tests {
             .unwrap();
         assert_eq!(response.status(), StatusCode::BAD_REQUEST);
 
-        // GET returns the same standalone section shape accepted by PUT, at the
-        // matching revision and without unrequested configuration fields.
+        // GET returns the same section shape that PUT accepts.
         let read = router
             .clone()
             .oneshot(