init: OBDX web landing (Bento Garage design)

- Vite + React + TS + Tailwind v4 + framer-motion + lucide
- 5 sections: Hero, Showcase (steps + 3 cases), Pricing, Comparison, Footer
- Brand assets local (logo v2 SVG, 3 mascots, 6 scenes) under public/brand/
- Dockerfile multi-stage (node 20 build → nginx 1.27 alpine)
- nginx /api/* reverse-proxy to obdx-api:8080, SPA fallback
- /healthz endpoint for Coolify

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vite.config.ts

@@ -0,0 +1,22 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+import tailwindcss from "@tailwindcss/vite";
+import path from "node:path";
+
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+    },
+  },
+  server: {
+    port: 5173,
+    proxy: {
+      "/api": {
+        target: "https://obd.kang-kang.com",
+        changeOrigin: true,
+      },
+    },
+  },
+});