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>

.gitignore

@@ -0,0 +1,9 @@
+node_modules
+dist
+.env
+.env.local
+.env.*.local
+.DS_Store
+.dev-screenshot-*.png
+.playwright-mcp
+*.log