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/app/config-history.js

@@ -21,8 +21,7 @@ function syncConfigHistoryRestoreButton() {
     button.hidden = configHistorySelectedRevision === null;
     button.disabled = busy || !envelope || !Number.isSafeInteger(revision) || revision >= Number(envelope.revision);
 }
-// Compare leaf fields, not serialized object/array blobs. Object IDs are used
-// for stable array paths so reordering vhosts does not become a huge fake diff.
+// Leaf-level diff keyed by object IDs, so reordering is not a change.
 function configDiff(before, after, path = "$", output = [], depth = 0) {
     if (output.length >= 200 || Object.is(before, after)) return output;
     if (depth >= 24) {