docs(CLAUDE.md): add code style section aligned with glyphdiff conventions

vite.config.ts

@@ -0,0 +1,12 @@
+import path from "node:path";
+import { sveltekit } from "@sveltejs/kit/vite";
+import { defineConfig } from "vite";
+
+export default defineConfig({
+	plugins: [sveltekit()],
+	resolve: {
+		alias: {
+			$lib: path.resolve("./src/lib"),
+		},
+	},
+});