feat: initial smart home dashboard

- Next.js 14 + TypeScript + Tailwind CSS
- Glassmorphism design with ambient orbs
- Cards: Light x2, Temperature, AirPurifier, Tasks, Weather, Savings
- Home Assistant integration (demo mode if no token)
- Vikunja tasks API
- Pulse savings API
- wttr.in weather
- Framer Motion animations
- Dark/light theme toggle
- Bottom navigation
- Dockerfile for deployment

postcss.config.mjs

@@ -0,0 +1,9 @@
+/** @type {import('postcss').Config} */
+const config = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};
+
+export default config;