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

scripts/build/swagger_assets.py

@@ -33,7 +33,7 @@ ASSETS = {
 LICENSE_MEMBERS = ("LICENSE", "NOTICE", "dist/swagger-ui-bundle.js.LICENSE.txt")
 HELP = ("Install Python 3.10+ and allow HTTPS access to github.com/codeload.github.com, "
         "or set SWAGGER_UI_DOWNLOAD_URL=file:///absolute/path/swagger-ui-5.33.1.zip "
-        "to a reviewed copy of the same tag archive. See docs/API_ACCESS.md.")
+        "to a reviewed copy of the same tag archive. See docs/INSTALL.md.")
 
 
 class AssetError(ValueError):