🔥 remove: demo mode from todo, contacts, clock, questions, chat apps

- Enforce login redirect for unauthenticated users
- Remove demo banner, AuthGateModal, and GuestWelcomeModal
- Remove guest mode state variables and CSS styles
- Simplify showLogout to always show when user is logged in

Affected apps: todo-web, contacts-web, clock-web, questions-web, chat-web

apps/chat/apps/web/src/routes/(protected)/+layout.svelte

@@ -24,11 +24,6 @@
 	import { getPillAppItems } from '@manacore/shared-branding';
 	import { getLanguageDropdownItems, getCurrentLanguageLabel } from '@manacore/shared-i18n';
 	import { setLocale, supportedLocales } from '$lib/i18n';
-	import {
-		AuthGateModal,
-		GuestWelcomeModal,
-		shouldShowGuestWelcome,
-	} from '@manacore/shared-auth-ui';
 	import type { LayoutData } from './$types';
 
 	// App switcher items
@@ -40,17 +35,6 @@
 	let isSidebarMode = $state(false);
 	let isCollapsed = $state(false);
 
-	// Guest mode state
-	let showAuthGateModal = $state(false);
-	let authGateAction = $state<'save' | 'sync' | 'ai' | 'feature'>('ai');
-
-	// Guest welcome modal state
-	let showGuestWelcome = $state(false);
-
-	// Check if in guest mode
-	let isGuestMode = $derived(!authStore.isAuthenticated);
-	let sessionConversationCount = $derived(sessionConversationsStore.count);
-
 	// Use theme store's isDark directly
 	let isDark = $derived(theme.isDark);
 
@@ -170,8 +154,15 @@
 		goto('/login');
 	}
 
-	// Initialize on mount - supports both authenticated and guest mode
+	// Initialize on mount - enforce login
 	onMount(async () => {
+		// Initialize auth and redirect if not authenticated
+		await authStore.initialize();
+		if (!authStore.isAuthenticated) {
+			goto('/login');
+			return;
+		}
+
 		// Initialize theme
 		theme.initialize();
 
@@ -189,27 +180,18 @@
 			collapsedStore.set(true);
 		}
 
-		await authStore.initialize();
+		// Load user settings
+		await userSettings.load();
 
-		// Show guest welcome modal for unauthenticated users
-		if (!authStore.isAuthenticated && shouldShowGuestWelcome('chat')) {
-			showGuestWelcome = true;
+		// Check for session conversations to migrate
+		if (conversationsStore.hasSessionConversations) {
+			await conversationsStore.migrateSessionConversations();
 		}
 
-		// Load user settings if authenticated
-		if (authStore.isAuthenticated) {
-			await userSettings.load();
-
-			// Check for session conversations to migrate
-			if (conversationsStore.hasSessionConversations) {
-				await conversationsStore.migrateSessionConversations();
-			}
-
-			// Redirect to start page if on /chat and a custom start page is set
-			const currentPath = window.location.pathname;
-			if (currentPath === '/chat' && userSettings.startPage && userSettings.startPage !== '/chat') {
-				goto(userSettings.startPage, { replaceState: true });
-			}
+		// Redirect to start page if on /chat and a custom start page is set
+		const currentPath = window.location.pathname;
+		if (currentPath === '/chat' && userSettings.startPage && userSettings.startPage !== '/chat') {
+			goto(userSettings.startPage, { replaceState: true });
 		}
 
 		isChecking = false;
@@ -229,22 +211,8 @@
 		</div>
 	</div>
 {:else}
-	<!-- Guest Mode Banner -->
-	{#if isGuestMode}
-		<div class="guest-banner">
-			<span>
-				Du bist im Gast-Modus.
-				{#if sessionConversationCount > 0}
-					{sessionConversationCount}
-					{sessionConversationCount === 1 ? 'Unterhaltung' : 'Unterhaltungen'} in dieser Session.
-				{/if}
-			</span>
-			<button onclick={() => goto('/login')}>Anmelden</button>
-		</div>
-	{/if}
-
 	<!-- Navigation Layout -->
-	<div class="layout-container" class:has-guest-banner={isGuestMode}>
+	<div class="layout-container">
 		<!-- Floating/Sidebar Pill Navigation -->
 		<PillNavigation
 			items={navItems}
@@ -296,91 +264,15 @@
 			{/if}
 		</main>
 	</div>
-
-	<!-- Auth Gate Modal -->
-	<AuthGateModal
-		visible={showAuthGateModal}
-		onClose={() => (showAuthGateModal = false)}
-		onLogin={() => {
-			showAuthGateModal = false;
-			if (typeof sessionStorage !== 'undefined') {
-				sessionStorage.setItem('auth-return-url', window.location.pathname);
-			}
-			goto('/login');
-		}}
-		onRegister={() => {
-			showAuthGateModal = false;
-			if (typeof sessionStorage !== 'undefined') {
-				sessionStorage.setItem('auth-return-url', window.location.pathname);
-			}
-			goto('/register');
-		}}
-		action={authGateAction}
-		migrationCount={sessionConversationCount}
-		locale={currentLocale === 'en' ? 'en' : 'de'}
-	/>
-
-	<!-- Guest Welcome Modal -->
-	<GuestWelcomeModal
-		appId="chat"
-		visible={showGuestWelcome}
-		onClose={() => (showGuestWelcome = false)}
-		onLogin={() => {
-			showGuestWelcome = false;
-			goto('/login');
-		}}
-		onRegister={() => {
-			showGuestWelcome = false;
-			goto('/register');
-		}}
-		helpHref="/help"
-		locale={currentLocale === 'en' ? 'en' : 'de'}
-	/>
 {/if}
 
 <style>
-	.guest-banner {
-		position: fixed;
-		top: 0;
-		left: 0;
-		right: 0;
-		z-index: 60;
-		background-color: #3b82f6;
-		color: white;
-		padding: 0.5rem 1rem;
-		display: flex;
-		align-items: center;
-		justify-content: center;
-		gap: 1rem;
-		font-size: 0.875rem;
-	}
-
-	.guest-banner button {
-		background-color: white;
-		color: #3b82f6;
-		padding: 0.25rem 0.75rem;
-		border-radius: 0.375rem;
-		font-weight: 500;
-		font-size: 0.875rem;
-		border: none;
-		cursor: pointer;
-		transition: background-color 0.15s;
-	}
-
-	.guest-banner button:hover {
-		background-color: #f0f9ff;
-	}
-
 	.layout-container {
 		display: flex;
 		flex-direction: column;
 		min-height: 100vh;
 	}
 
-	.layout-container.has-guest-banner {
-		padding-top: 40px;
-	}
-
 	.main-content {
 		flex: 1;
 		transition: all 300ms ease;