fix: emergency restore of frontend navigation and tab functionality

- Removed restrictive x-show/x-cloak that blocked UI visibility
- Forced tab container display and visibility in header
- Improved auth state synchronization with synchronous Alpine loading
- Fixed home section initialization and tab switching logic

templates/components/home_section.html

@@ -1,5 +1,8 @@
 <!-- Home Section: Recommendations & Latest Releases -->
-<div id="tab-home" class="tab-content" x-show="activeTab === 'home'" x-init="if (activeTab === 'home') loadHomeContent()">
+<div id="tab-home" class="tab-content" 
+     x-show="activeTab === 'home'" 
+     x-init="if (activeTab === 'home') setTimeout(() => loadHomeContent(), 500)"
+     @set-tab.window="if ($event.detail.tab === 'home') loadHomeContent()">
     <!-- Loading State -->
     <div id="homeLoading" class="loading-spinner">Chargement des recommandations...</div>