feat: initialize SvelteKit frontend with Tailwind and OpenAPI types

- SvelteKit SPA mode with adapter-static (index.html fallback)
- Tailwind CSS v4 via @tailwindcss/vite with custom color palette
- CSS custom properties for dark/light theme (dark is default)
- Epilogue variable font with preload
- openapi-typescript generates src/lib/api/schema.ts from openapi.yaml
- Friendly domain type aliases in src/lib/api/types.ts

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/svelte.config.js

@@ -0,0 +1,12 @@
+import adapter from '@sveltejs/adapter-static';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	preprocess: vitePreprocess(),
+	kit: {
+		adapter: adapter({ fallback: 'index.html' })
+	}
+};
+
+export default config;