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/viewer.js

@@ -1054,7 +1054,7 @@ export async function loadSavedSearches() {
       if (s.exclude_paths) pathFilters.push(`<span class="saved-search-path" title="Exclure: ${escapeHtml(s.exclude_paths)}">📤 ${escapeHtml(s.exclude_paths)}</span>`);
       const vaultStr = s.vault && s.vault !== "all" ? `<span class="saved-search-vault">📁 ${escapeHtml(s.vault)}</span>` : "";
       return `
-      <div class="saved-search-item${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("")} ${vaultStr}</span>
@@ -1064,6 +1064,10 @@ export async function loadSavedSearches() {
         <button class="saved-search-delete" data-id="${s.id}" title="Supprimer">✕</button>
       </div>
     `}).join("");
+    // Apply saved filter
+    _applySavedFilter();
+    // Set up filter bar (once)
+    _initSavedFilter();
     list.querySelectorAll(".saved-search-item").forEach(item => {
       item.addEventListener("click", (e) => {
         if (e.target.classList.contains("saved-search-delete")) return;
@@ -1453,7 +1457,40 @@ function _renderSyncPanel(panel) {
     });
     html += `</div>`;
   }
+}
 
+// ── Saved searches filter ──
+var _savedFilterType = 'all';
+var _savedFilterInitDone = false;
+
+function _initSavedFilter() {
+  if (_savedFilterInitDone) return;
+  var bar = document.getElementById('saved-filter-bar');
+  if (!bar) return;
+  bar.querySelectorAll('.saved-filter-pill').forEach(function(btn) {
+    btn.addEventListener('click', function() {
+      bar.querySelectorAll('.saved-filter-pill').forEach(function(b) { b.classList.remove('active'); });
+      btn.classList.add('active');
+      _savedFilterType = btn.dataset.filter;
+      _applySavedFilter();
+    });
+  });
+  _savedFilterInitDone = true;
+}
+
+function _applySavedFilter() {
+  var items = document.querySelectorAll('.saved-search-item');
+  var hasVisible = false;
+  items.forEach(function(item) {
+    var type = item.dataset.type;
+    var show = _savedFilterType === 'all' || type === _savedFilterType;
+    item.style.display = show ? '' : 'none';
+    if (show) hasVisible = true;
+  });
+  // Show/hide empty state
+  var empty = document.getElementById('saved-searches-empty');
+  if (empty) empty.style.display = hasVisible ? 'none' : '';
+}
   panel.innerHTML = html;
 }