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

grafana/README.md

@@ -12,7 +12,7 @@ latency, backend health/EWMA latency/active work, traffic, probe age and upstrea
 variables **Docker agent** and **Docker service** filter only this section, which keeps
 multi-agent installations readable without changing the ordinary vhost panels.
 
-The **0.33.0 Web Server** row adds header-ready request rates, status-class and
+The **Web Server** row adds header-ready request rates, status-class and
 static/PHP/other donut breakdowns, error percentage, response-header latency,
 payload byte rates, and downstream compression by codec. **PHP-FPM / FastCGI**
 adds request activity, RustProxy PHP permit capacity, and errors grouped by
@@ -29,7 +29,7 @@ classes, cache outcomes, capture-state gauges and configured-route traffic. Raw
 are intentionally absent from Prometheus labels.
 
 Import the JSON in Grafana and select a Prometheus datasource when prompted. The
-dashboard expects RustProxy 0.33.0 for its newest Web Server metric names
+dashboard expects a RustProxy version that exports the Web Server metric names
 (and also retains the older panels); a scrape interval around 15s is suitable.
 Collectors can be disabled in RustProxy settings; panels for disabled collectors
 will simply show no series.