fix(library): supprimer tous les x-show (loading, empty) — _renderTable contrôle tout

app/templates/library.html

@@ -207,7 +207,7 @@
   </div>
 
   <!-- ── Loading ── -->
-  <div x-show="loading" class="lib-loading" id="lib-loading">
+  <div class="lib-loading" id="lib-loading">
     <p>Loading…</p>
   </div>
 
@@ -231,7 +231,7 @@
   </div>
 
   <!-- ── Empty state ── -->
-  <div x-show="!loading && flatItems.length === 0" class="lib-empty" id="lib-empty">
+  <div class="lib-empty" id="lib-empty">
     <div class="empty-icon" x-text="emptyIcon"></div>
     <h3 x-text="emptyTitle"></h3>
     <p x-text="emptyText"></p>