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/tsconfig.json

@@ -0,0 +1,20 @@
+{
+	"extends": "./.svelte-kit/tsconfig.json",
+	"compilerOptions": {
+		"rewriteRelativeImportExtensions": true,
+		"allowJs": true,
+		"checkJs": true,
+		"esModuleInterop": true,
+		"forceConsistentCasingInFileNames": true,
+		"resolveJsonModule": true,
+		"skipLibCheck": true,
+		"sourceMap": true,
+		"strict": true,
+		"moduleResolution": "bundler"
+	}
+	// Path aliases are handled by https://svelte.dev/docs/kit/configuration#alias
+	// except $lib which is handled by https://svelte.dev/docs/kit/configuration#files
+	//
+	// To make changes to top-level options such as include and exclude, we recommend extending
+	// the generated config; see https://svelte.dev/docs/kit/configuration#typescript
+}