feat: filtre sauvegardes (Tous/Recherches/Repertoires) extensible

- Barre de filtres avec 3 pills: Tous, Recherches, Repertoires
- Chaque saved-search-item a data-type=search|directory
- _applySavedFilter() masque/affiche selon le filtre actif
- _initSavedFilter() initialise les listeners (run once)
- Extensible: ajouter un pill + data-type suffit
- Gere l'etat empty quand aucun resultat pour le filtre

frontend/js/legacy.js

@@ -347,16 +347,19 @@ async function loadSavedSearches() {
       if (s.exclude_paths) pathFilters.push(`<span class="saved-search-path" title="Exclure: ${escapeHtml(s.exclude_paths)}">\u{1F4E4} ${escapeHtml(s.exclude_paths)}</span>`);
       const vaultStr = s.vault && s.vault !== "all" ? `<span class="saved-search-vault">\u{1F4C1} ${escapeHtml(s.vault)}</span>` : "";
       return `
-      <div class="saved-search-item${isDirSearch ? ' saved-search-dir' : ''}">
+      <div class="saved-search-item${isDirSearch ? ' saved-search-dir' : ''}" data-type="${isDirSearch ? 'directory' : 'search'}">
         <div class="saved-search-query">${displayQuery}</div>
         <div class="saved-search-meta">
           <span class="saved-search-badges">${badges.join("")} ${vaultStr}</span>
           ${typeIcon}
         </div>
         ${pathFilters.length ? '<div class="saved-search-filters">' + pathFilters.join(" ") + '</div>' : ""}
-        <button class="saved-search-delete" data-id="${s.id}" title="Supprimer"><E2><9C><95></button>
+        <button class="saved-search-delete" data-id="${s.id}" title="Supprimer">✕</button>
       </div>
     `}).join("");
+    // Apply saved filter + init filter bar
+    if (typeof _applySavedFilter === 'function') _applySavedFilter();
+    if (typeof _initSavedFilter === 'function') _initSavedFilter();
     list.querySelectorAll(".saved-search-item").forEach(item => {
       item.addEventListener("click", (e) => {
         if (e.target.classList.contains("saved-search-delete")) return;