feat: initial Honcho UI scaffold

React 19 + Vite 8 + TanStack Router SPA for browsing and chatting with
a self-hosted Honcho instance. Configurable base URL stored in localStorage
only. Dark/light theme, framer-motion animations, lucide-react icons.

.npmrc

@@ -0,0 +1 @@
+{"ignoredBuilds": [], "onlyBuiltDependencies": ["@biomejs/biome", "esbuild"]}