feat: barre de recherche epuree + barre flottante de resultats

- Header: retire Aa/wd/.*, compteur 0/0, fleches nav (reste filtre + clear)
- Nouvelle barre flottante sticky en bas du content-area
- Style pill arrondi, fond semi-transparent, ombre legere
- Contient: compteur, nav prev/next, toggles Aa/wd/.*
- Apparait seulement quand des resultats sont affiches
- Disparait au clear ou retour dashboard
- Mobile: filtre + clear restent visibles
- IDs renommes rb-* pour eviter collisions

frontend/js/search.js

@@ -510,15 +510,19 @@ function _triggerAdvancedSearch(rawQuery) {
 export function initSearch() {
   const input = document.getElementById("search-input");
   if (!input) return;
-  const caseBtn = document.getElementById("search-case-btn");
-  const wordBtn = document.getElementById("search-word-btn");
-  const regexBtn = document.getElementById("search-regex-btn");
+  const caseBtn = document.getElementById("rb-case");
+  const wordBtn = document.getElementById("rb-word");
+  const regexBtn = document.getElementById("rb-regex");
   const filterBtn = document.getElementById("search-filter-btn");
   const clearBtn = document.getElementById("search-clear-btn");
   const filterRow = document.getElementById("search-filter-row");
-  const prevBtn = document.getElementById("search-prev-btn");
-  const nextBtn = document.getElementById("search-next-btn");
-  const countEl = document.getElementById("search-match-count");
+  const prevBtn = document.getElementById("rb-prev");
+  const nextBtn = document.getElementById("rb-next");
+  const countEl = document.getElementById("rb-count");
+  const resultsBar = document.getElementById("results-bar");
+
+  function _showResultsBar() { if (resultsBar) resultsBar.style.display = 'flex'; }
+  function _hideResultsBar() { if (resultsBar) resultsBar.style.display = 'none'; }
 
   function _updateToggleUI() {
     caseBtn.classList.toggle("active", state.searchCaseSensitive);
@@ -544,7 +548,7 @@ export function initSearch() {
     if (_searchResultIdx >= 0 && _searchResultIdx < _searchResultItems.length) {
       _searchResultItems[_searchResultIdx].scrollIntoView({ block: "nearest", behavior: "smooth" });
     }
-    const countEl = document.getElementById("search-match-count");
+    const countEl = document.getElementById("rb-count");
     if (countEl) countEl.textContent = _searchResultIdx >= 0 ? `${_searchResultIdx + 1}/${_searchResultItems.length}` : `0/${_searchResultItems.length}`;
   }
 
@@ -552,6 +556,7 @@ export function initSearch() {
     _searchResultItems = Array.from(document.querySelectorAll(".search-result-item"));
     _searchResultIdx = _searchResultItems.length > 0 ? 0 : -1;
     _updateResultHighlight();
+    if (_searchResultItems.length > 0) _showResultsBar(); else _hideResultsBar();
   }
 
   window.navigateSearchResults = function(delta) {
@@ -702,6 +707,7 @@ export function initSearch() {
     state.searchWholeWord = false;
     state.searchRegex = false;
     _updateToggleUI();
+    _hideResultsBar();
     SearchChips.clear();
     AutocompleteDropdown.hide();
     showWelcome();
@@ -897,8 +903,11 @@ export function renderAdvancedSearchResults(data, query, tagFilter) {
   area.innerHTML = "";
 
   // Update match counter
-  const countEl = document.getElementById("search-match-count");
+  const countEl = document.getElementById("rb-count");
   if (countEl) countEl.textContent = `${data.total > 0 ? "1" : "0"}/${data.total}`;
+  // Show floating results bar
+  var rb = document.getElementById('results-bar');
+  if (rb) rb.style.display = 'flex';
 
   // Header with result count and sort controls
   const header = el("div", { class: "search-results-header" });