CUB-194: scaffold Vite + React + TypeScript + Tailwind frontend

- Initialize Vite project with React + TypeScript + Tailwind CSS
- Dark theme dashboard design (rig-dark palette, rig-accent colors)
- Minimal App with RemoteRig header + 'Dashboard coming soon' placeholder
- Directory structure: components, hooks, services, types, utils
- TypeScript types for Camera, CameraFeed, SystemHealth, StreamConfig
- Custom hooks: useCameraStatus, useSystemHealth (with mock data)
- API service layer with proxy config for /api → localhost:8080
- eslint, postcss, autoprefixer configured
- lucide-react icons integrated (Camera icon)
- .env.example, .gitignore, tsconfig basepaths configured
- Build + type-check + lint verified clean

src/index.css

@@ -0,0 +1,30 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+/* Dashboard-specific resets */
+html {
+  @apply antialiased;
+}
+
+body {
+  @apply bg-rig-dark-900 text-rig-dark-100;
+}
+
+/* Scrollbar styling */
+::-webkit-scrollbar {
+  width: 6px;
+  height: 6px;
+}
+
+::-webkit-scrollbar-track {
+  @apply bg-rig-dark-800;
+}
+
+::-webkit-scrollbar-thumb {
+  @apply bg-rig-dark-600 rounded;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  @apply bg-rig-dark-500;
+}