feat: actualiza header a Tareas/Grupos/Recordatorios/Calendarios

Co-authored-by: aider (openrouter/openai/gpt-5) <aider@aider.chat>

apps/web/src/lib/ui/layout/AppShell.svelte

@@ -7,10 +7,10 @@
   <div class="container row">
     <a class="brand" href="/app" aria-label="Inicio">Tareas</a>
     <nav class="nav">
-      <a href="/app" class:active={$page.url.pathname === '/app'}>Mis tareas</a>
+      <a href="/app" class:active={$page.url.pathname === '/app'}>Tareas</a>
       <a href="/app/groups" class:active={$page.url.pathname.startsWith('/app/groups')}>Grupos</a>
-      <a href="/app/integrations" class:active={$page.url.pathname.startsWith('/app/integrations')}>Integraciones</a>
-      <a href="/app/preferences" class:active={$page.url.pathname.startsWith('/app/preferences')}>Preferencias</a>
+      <a href="/app/preferences" class:active={$page.url.pathname.startsWith('/app/preferences')}>Recordatorios</a>
+      <a href="/app/integrations" class:active={$page.url.pathname.startsWith('/app/integrations')}>Calendarios</a>
     </nav>
     <form method="POST" action="/api/logout">
       <button type="submit" class="logout">Cerrar sesión</button>
@@ -18,6 +18,10 @@
   </div>
 </header>
 
+<svelte:head>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+</svelte:head>
+
 <main class="container main">
   <slot />
 </main>

apps/web/src/routes/app/+page.svelte

@@ -65,6 +65,11 @@
 	}
 </script>
 
+<svelte:head>
+	<title>Tareas</title>
+	<meta name="robots" content="noindex,nofollow" />
+</svelte:head>
+
 <p class="subtle">Sesión: <strong>{data.userId}</strong></p>
 
 <div class="order-toggle">

apps/web/src/routes/app/integrations/+page.svelte

@@ -53,12 +53,12 @@
 </script>
 
 <svelte:head>
-  <title>Integraciones (ICS)</title>
+  <title>Calendarios</title>
   <meta name="robots" content="noindex,nofollow" />
 </svelte:head>
 
 <section style="max-width: 920px; margin: 1.5rem auto; padding: 0 1rem;">
-  <h1 style="font-size: 1.4rem; font-weight: 600; margin-bottom: .75rem;">Integraciones</h1>
+  <h1 style="font-size: 1.4rem; font-weight: 600; margin-bottom: .75rem;">Calendarios</h1>
 
   <h2 style="font-size: 1.1rem; font-weight: 600; margin: .5rem 0;">Feed personal</h2>
   <FeedCard

apps/web/src/routes/app/preferences/+page.svelte

@@ -23,8 +23,13 @@
   ];
 </script>
 
+<svelte:head>
+  <title>Recordatorios</title>
+  <meta name="robots" content="noindex,nofollow" />
+</svelte:head>
+
 <section class="page">
-	<h1 class="title">Preferencias de recordatorios</h1>
+	<h1 class="title">Recordatorios</h1>
 
   <Card>
     <form method="POST" class="form">