feat: scaffold SvelteKit project with Tailwind, TypeScript, ESLint, Prettier

Initialize the llm-multiverse-ui project with:
- SvelteKit + Svelte 5 (runes mode enabled)
- Tailwind CSS v4 via @tailwindcss/vite plugin
- TypeScript strict mode
- ESLint 9 flat config with svelte and typescript-eslint plugins
- Prettier with svelte plugin
- Directory structure: src/lib/components/, src/lib/services/
- All required scripts: dev, build, preview, lint, format, check

Closes #1

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

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
+}