fix: ensure HTML response for search and fix player container

- Added html=1 parameter support to router_anime.py for guaranteed HTML fragments
- Added missing #player-container to index.html for HTMX interactions
- Cleaned up legacy CSS .active classes interfering with Alpine.js x-show

templates/index.html

@@ -3,7 +3,7 @@
 {% block content %}
 {% include "components/header.html" %}
 
-<!-- Main content - Shown only when authenticated -->
+<!-- Main content - Managed by Alpine state -->
 <div id="main-content">
 
 {% include "components/home_section.html" %}
@@ -15,7 +15,7 @@
         <h2>🎬 Rechercher un Anime</h2>
     </div>
     <div class="url-form">
-        <form hx-get="/api/anime/search" 
+        <form hx-get="/api/anime/search?html=1" 
               hx-target="#animeSearchResults" 
               hx-indicator="#search-loading"
               class="input-group">
@@ -43,6 +43,9 @@
 
     <!-- Anime search results -->
     <div id="animeSearchResults" style="margin-bottom: 40px;"></div>
+    
+    <!-- Player container for HTMX injections -->
+    <div id="player-container"></div>
 
     <hr style="border: none; border-top: 1px solid rgba(255,255,255,0.1); margin: 40px 0;">