Show each server's Forgetting version in the panel

- awg-agent sends its install's VERSION (from the CLI's env, else the
  project's .env) in the auth frame; the hub keeps it in nodes.version
  (added by migration), so an offline node still shows the last one.
- GET /ui/nodes returns version per server (0 is the panel's own) and the
  panel's version at the top.
- ServerBar: a vX.Y.Z chip next to the AWG generation. A node older or
  newer than the panel, or one that sends no version (agent before
  0.3.4, shown as v?.?.?), gets a warm chip with an "update it" tooltip.
- App.css: tertiary-container tokens from design.md (light) and a warm
  dark pair; they did not exist yet.
- Mock server: panel 0.3.3, Frankfurt behind on 0.3.2, Amsterdam with no
  version.

awg-ui/server.ts

@@ -355,7 +355,7 @@ app.use("/api/v1", ext);
 // sen://-подписка: мастер-ключи и устройства (роуты панели, за JWT) и публичный
 // листенер /sub/v1 на своём порту SUB_PORT. Публичная часть сюда не монтируется.
 // Несколько серверов: core (эта панель) + ноды по исходящему WSS. Реестр — в ui.db.
-const nodes = createNodes({ uidb, ctrlLocal: ctrl, baseDir: __dirname });
+const nodes = createNodes({ uidb, ctrlLocal: ctrl, baseDir: __dirname, version: VERSION });
 app.use("/ui/nodes", requireAuth, nodes.router);
 
 // sen://-подписка: мастер-ключ отдаёт набор серверов (локальный и/или ноды).