feat: sustituir header móvil por tabbar y añadir logout en móvil

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

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

@@ -1,6 +1,13 @@
 <script lang="ts">
   import { page } from '$app/stores';
   import Toast from '$lib/ui/feedback/Toast.svelte';
+  $: pathname = $page.url.pathname;
+  $: currentTitle =
+    pathname === '/app' ? 'Tareas' :
+    pathname.startsWith('/app/groups') ? 'Grupos' :
+    pathname.startsWith('/app/preferences') ? 'Recordatorios' :
+    pathname.startsWith('/app/integrations') ? 'Calendarios' :
+    'Tareas';
 </script>
 
 <header class="app-header">
@@ -18,6 +25,11 @@
   </div>
 </header>
 
+<!-- Barra superior móvil (solo título) -->
+<div class="mobile-topbar" aria-hidden="true">
+  <div class="container topbar-inner">{currentTitle}</div>
+</div>
+
 <svelte:head>
   <meta name="viewport" content="width=device-width, initial-scale=1" />
 </svelte:head>
@@ -43,6 +55,12 @@
     <span class="icon">📅</span>
     <span class="label">Calendarios</span>
   </a>
+  <form method="POST" action="/api/logout" class="logout-tab" aria-label="Salir">
+    <button type="submit">
+      <span class="icon">🚪</span>
+      <span class="label">Salir</span>
+    </button>
+  </form>
 </nav>
 
 <Toast />
@@ -123,6 +141,11 @@
     padding-bottom: var(--space-4);
   }
 
+  /* Barra superior móvil oculta por defecto */
+  .mobile-topbar {
+    display: none;
+  }
+
   /* Barra de pestañas inferior (solo móvil) */
   .tabbar {
     position: fixed;
@@ -139,10 +162,11 @@
   @media (max-width: 768px) {
     .tabbar {
       display: grid;
-      grid-template-columns: repeat(4, 1fr);
+      grid-template-columns: repeat(5, 1fr);
       align-items: center;
     }
-    .tabbar a {
+    .tabbar a,
+    .tabbar button {
       display: inline-flex;
       align-items: center;
       justify-content: center;
@@ -150,6 +174,15 @@
       padding: 6px 8px;
       color: inherit;
       text-decoration: none;
+      background: transparent;
+      border: none;
+    }
+    .tabbar form.logout-tab {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      margin: 0;
+      padding: 0;
     }
     .tabbar a.active {
       color: var(--color-primary);
@@ -163,8 +196,9 @@
       font-size: 12px;
       line-height: 1;
     }
-    /* Reservar espacio en el main para no tapar contenido */
+    /* Reservar espacio en el main para no tapar contenido y la barra superior */
     .main {
+      padding-top: calc(var(--space-4) + 44px + env(safe-area-inset-top));
       padding-bottom: calc(var(--space-4) + 48px + env(safe-area-inset-bottom));
     }
   }
@@ -173,4 +207,25 @@
       display: none;
     }
   }
+
+  /* Ocultar header y mostrar topbar en móvil */
+  @media (max-width: 768px) {
+    .app-header { display: none; }
+    .mobile-topbar {
+      display: block;
+      position: sticky;
+      top: 0;
+      z-index: 12;
+      background: var(--color-surface);
+      border-bottom: 1px solid var(--color-border);
+      min-height: 44px;
+      padding-top: env(safe-area-inset-top);
+    }
+    .mobile-topbar .topbar-inner {
+      display: flex;
+      align-items: center;
+      min-height: 44px;
+      font-weight: 600;
+    }
+  }
 </style>

apps/web/src/routes/+layout.svelte

@@ -12,26 +12,36 @@
 
 {#if dev}
 	<div
+		class="dev-banner"
 		role="status"
-		aria-live="polite"
-		style="
-			position: fixed;
-			bottom: 8px;
-			left: 8px;
-			right: 8px;
-			margin: 0 auto;
-			max-width: 960px;
-			background: rgba(255, 221, 87, 0.95);
-			color: #111;
-			border: 1px solid rgba(0,0,0,0.15);
-			border-radius: 6px;
-			padding: 8px 12px;
-			font-size: 13px;
-			box-shadow: 0 2px 6px rgba(0,0,0,0.15);
-			z-index: 9999;
-		">
+		aria-live="polite">
 		Modo desarrollo: auth bypass activo
 	</div>
 {/if}
 
 <slot />
+
+<style>
+	.dev-banner {
+		position: fixed;
+		left: 8px;
+		right: 8px;
+		margin: 0 auto;
+		max-width: 960px;
+		background: rgba(255, 221, 87, 0.95);
+		color: #111;
+		border: 1px solid rgba(0,0,0,0.15);
+		border-radius: 6px;
+		padding: 8px 12px;
+		font-size: 13px;
+		box-shadow: 0 2px 6px rgba(0,0,0,0.15);
+		z-index: 9999;
+		bottom: 8px;
+	}
+	@media (max-width: 768px) {
+		.dev-banner {
+			top: 8px;
+			bottom: auto;
+		}
+	}
+</style>