feat(dashboard): GuruConnect v2 operator console (pass 1)

React + Vite + TypeScript SPA: scaffold, operations-terminal design
system, Bearer-token auth, and the Machines view.

- Design system: OKLCH-tinted dark theme (ink-slate + signal-cyan),
  Hanken Grotesk + JetBrains Mono, status-color language
  (online/offline/granted/pending/denied/not_required), motion with
  prefers-reduced-motion honored.
- Auth: token in sessionStorage via ref (never React state), protected
  routes, 401 session teardown, admin-gated per-agent-key UI.
- Machines view: data table (sticky header, keyboard-activated rows,
  skeleton loading, actionable empty/error states), non-blocking detail
  drawer, delete confirm, admin key management with copy-once reveal.
- UI primitives: Modal (focus trap + inert + portal + dialogStack),
  Drawer, Table, Badge/StatusDot, toast, states.
- Typed API client normalizing the two error-envelope shapes.

Passed Code Review (no blockers), impeccable critique-and-polish, and
local gates (tsc/lint/build green). Dev-only Vite proxy to :3002.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

dashboard/vite.config.ts

@@ -0,0 +1,35 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+
+// Dev proxy targets the local GuruConnect (GC) server. `/api` and `/ws` are
+// forwarded to the Rust server on :3002 so `npm run dev` works against a real
+// backend without CORS gymnastics.
+//
+// `base` is "./" so the built assets reference relative paths — production
+// serving copies `dist/` into the server's static dir and a catch-all route
+// serves index.html. Wiring that catch-all in the Rust server is a DEPLOY
+// concern (see README), not done in this pass.
+const GC_SERVER = "http://localhost:3002";
+
+export default defineConfig({
+  base: "./",
+  plugins: [react()],
+  server: {
+    port: 5273,
+    proxy: {
+      "/api": {
+        target: GC_SERVER,
+        changeOrigin: true,
+      },
+      "/ws": {
+        target: GC_SERVER,
+        changeOrigin: true,
+        ws: true,
+      },
+    },
+  },
+  build: {
+    outDir: "dist",
+    sourcemap: true,
+  },
+});