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

docs/WEB_SERVER.md

@@ -46,9 +46,8 @@ For PHP applications, the separate **PHP-FPM pool user** needs its own access to
 | **Symlinks** | `deny` by default; `inside_root` is an explicit less restrictive policy. |
 | **Hardening** | Optional checks for common sensitive/attack paths and removal of selected server-identifying headers; not a full WAF. |
 
-### Static delivery (`sendfile`) — 0.34.0
-
-In **Web Server → Edit service → Delivery**, `sendfile` supports `off` (default) and `auto`. On **Linux**, eligible full static **GET** responses of at least **64 KiB** over **unencrypted HTTP/1.1** may use a kernel file-transfer path. TLS, HTTP/2, HTTP/3, ranged or transformed content, compressed responses and active object-cache responses keep the normal streaming path. This transport choice should not invalidate otherwise compatible cached objects. It is an **unverified source candidate** in the provided archive: test it on the actual server before use and do not assume a measured speedup.
+### Static delivery (`sendfile`)
+In **Web Server → Edit service → Delivery**, `sendfile` supports `off` (default) and `auto`. On **Linux**, eligible full static **GET** responses of at least **64 KiB** over **unencrypted HTTP/1.1** may use a kernel file-transfer path. TLS, HTTP/2, HTTP/3, ranged or transformed content, compressed responses and active object-cache responses keep the normal streaming path. This transport choice should not invalidate otherwise compatible cached objects. Measure on your own hardware before enabling it; see [Performance](PERFORMANCE.md).
 
 ## Rewrites and application presets