diff --git a/frontend/CLAUDE.md b/frontend/CLAUDE.md
new file mode 100644
index 0000000..6094c34
--- /dev/null
+++ b/frontend/CLAUDE.md
@@ -0,0 +1,32 @@
+# Musify — Frontend web
+
+Web pública de Musify. Para diseño y recetas de UI usa el skill **`musify-web`**.
+
+## Stack
+
+SvelteKit 2 (`adapter-node`) · Svelte 5 **runes** · Tailwind 4 · TypeScript strict · auth OIDC Zitadel (`openid-client` + `jose`).
+
+No hay `svelte.config.js` (config inline en `vite.config.ts`) ni `tailwind.config.js` (config en `src/routes/layout.css`).
+
+## Comandos
+
+```sh
+npm run dev      # servidor de desarrollo (puerto 5173)
+npm run build
+npm run check    # svelte-check — debe salir 0 errores antes de cerrar un cambio
+```
+
+## Reglas
+
+- **Sin comentarios** en el código salvo que sean imprescindibles.
+- **Svelte 5 runes siempre:** `$props()` con `interface Props`, `$state`, `$derived`, `$effect`. Nada de `export let` ni `$:`. `{#each}` siempre con clave.
+- **Server-only bajo `$lib/server/`**; nunca importado desde cliente.
+- Datos SSR vía `load` en `+page.server.ts`/`+layout.server.ts` → prop `data`.
+- Enlaces a endpoints `+server.ts` (login/logout) llevan `data-sveltekit-reload`.
+- Reutiliza los tokens/recetas del sistema de diseño; extrae a `$lib/components/ui/` lo que se repita.
+
+## Auth
+
+`hooks.server.ts` valida la cookie de sesión cifrada (`mf_session`), refresca el `access_token` y puebla `locals.user` / `locals.accessToken`. Para proteger una ruta, comprueba `locals.user` en su `load` y redirige a `/login?returnTo=…`. Para el backend, envía `locals.accessToken` como Bearer hacia `API_BASE_URL`.
+
+Variables de entorno en `.env` (ver `.env.example`): `ZITADEL_*`, `AUTH_REDIRECT_URI`, `AUTH_POST_LOGOUT_URI`, `SESSION_SECRET`, `API_BASE_URL`.
diff --git a/frontend/src/app.d.ts b/frontend/src/app.d.ts
index d16d09e..3640325 100644
--- a/frontend/src/app.d.ts
+++ b/frontend/src/app.d.ts
@@ -1,17 +1,11 @@
-// See https://svelte.dev/docs/kit/types#app.d.ts
-// for information about these interfaces
 import type { SessionUser } from '$lib/types';
 
 declare global {
 	namespace App {
-		// interface Error {}
 		interface Locals {
 			user: SessionUser | null;
 			accessToken: string | null;
 		}
-		// interface PageData {}
-		// interface PageState {}
-		// interface Platform {}
 	}
 }
 
diff --git a/frontend/src/app.html b/frontend/src/app.html
index 6a2bb58..f273cc5 100644
--- a/frontend/src/app.html
+++ b/frontend/src/app.html
@@ -3,7 +3,6 @@
 	<head>
 		<meta charset="utf-8" />
 		<meta name="viewport" content="width=device-width, initial-scale=1" />
-		<meta name="text-scale" content="scale" />
 		%sveltekit.head%
 	</head>
 	<body data-sveltekit-preload-data="hover">
diff --git a/frontend/src/lib/index.ts b/frontend/src/lib/index.ts
deleted file mode 100644
index 856f2b6..0000000
--- a/frontend/src/lib/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-// place files you want to import through the `$lib` alias in this folder.
diff --git a/frontend/tsconfig.json b/frontend/tsconfig.json
index 2c2ed3c..feea18b 100644
--- a/frontend/tsconfig.json
+++ b/frontend/tsconfig.json
@@ -12,9 +12,4 @@
 		"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
 }
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 001085f..dd21275 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -8,13 +8,9 @@ export default defineConfig({
 		tailwindcss(),
 		sveltekit({
 			compilerOptions: {
-				// Force runes mode for the project, except for libraries. Can be removed in svelte 6.
-				runes: ({ filename }) => filename.split(/[/\\]/).includes('node_modules') ? undefined : true
+				runes: ({ filename }) =>
+					filename.split(/[/\\]/).includes('node_modules') ? undefined : true
 			},
-
-			// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
-			// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
-			// See https://svelte.dev/docs/kit/adapters for more information about adapters.
 			adapter: adapter()
 		})
 	]