Add desktop sidebar toggle with persistent state, search result highlighting, and improved filter icon positioning

frontend/app.js

@@ -368,6 +368,32 @@
     return res.json();
   }
 
+  // ---------------------------------------------------------------------------
+  // Sidebar toggle (desktop)
+  // ---------------------------------------------------------------------------
+  function initSidebarToggle() {
+    const toggleBtn = document.getElementById("sidebar-toggle-btn");
+    const sidebar = document.getElementById("sidebar");
+    const resizeHandle = document.getElementById("sidebar-resize-handle");
+    
+    if (!toggleBtn || !sidebar || !resizeHandle) return;
+    
+    // Restore saved state
+    const savedState = localStorage.getItem("obsigate-sidebar-hidden");
+    if (savedState === "true") {
+      sidebar.classList.add("hidden");
+      resizeHandle.classList.add("hidden");
+      toggleBtn.classList.add("active");
+    }
+    
+    toggleBtn.addEventListener("click", () => {
+      const isHidden = sidebar.classList.toggle("hidden");
+      resizeHandle.classList.toggle("hidden", isHidden);
+      toggleBtn.classList.toggle("active", isHidden);
+      localStorage.setItem("obsigate-sidebar-hidden", isHidden ? "true" : "false");
+    });
+  }
+
   // ---------------------------------------------------------------------------
   // Mobile sidebar
   // ---------------------------------------------------------------------------
@@ -1580,10 +1606,26 @@
 
     const container = el("div", { class: "search-results" });
     data.results.forEach((r) => {
+      // Create title with highlighting
+      const titleDiv = el("div", { class: "search-result-title" });
+      if (query && query.trim()) {
+        highlightSearchText(titleDiv, r.title, query, searchCaseSensitive);
+      } else {
+        titleDiv.textContent = r.title;
+      }
+      
+      // Create snippet with highlighting
+      const snippetDiv = el("div", { class: "search-result-snippet" });
+      if (query && query.trim() && r.snippet) {
+        highlightSearchText(snippetDiv, r.snippet, query, searchCaseSensitive);
+      } else {
+        snippetDiv.textContent = r.snippet || "";
+      }
+      
       const item = el("div", { class: "search-result-item" }, [
-        el("div", { class: "search-result-title" }, [document.createTextNode(r.title)]),
+        titleDiv,
         el("div", { class: "search-result-vault" }, [document.createTextNode(r.vault + " / " + r.path)]),
-        el("div", { class: "search-result-snippet" }, [document.createTextNode(r.snippet || "")]),
+        snippetDiv,
       ]);
 
       if (r.tags && r.tags.length > 0) {
@@ -1764,6 +1806,40 @@
     }
   }
 
+  function highlightSearchText(container, text, query, caseSensitive) {
+    container.textContent = "";
+    if (!query || !text) {
+      container.appendChild(document.createTextNode(text || ""));
+      return;
+    }
+
+    const source = caseSensitive ? text : text.toLowerCase();
+    const needle = caseSensitive ? query : query.toLowerCase();
+    let start = 0;
+    let index = source.indexOf(needle, start);
+
+    if (index === -1) {
+      container.appendChild(document.createTextNode(text));
+      return;
+    }
+
+    while (index !== -1) {
+      if (index > start) {
+        container.appendChild(document.createTextNode(text.slice(start, index)));
+      }
+      const mark = el("mark", { class: "search-highlight" }, [
+        document.createTextNode(text.slice(index, index + query.length)),
+      ]);
+      container.appendChild(mark);
+      start = index + query.length;
+      index = source.indexOf(needle, start);
+    }
+
+    if (start < text.length) {
+      container.appendChild(document.createTextNode(text.slice(start)));
+    }
+  }
+
   function showWelcome() {
     const area = document.getElementById("content-area");
     area.innerHTML = `
@@ -2015,6 +2091,7 @@
     document.getElementById("theme-toggle").addEventListener("click", toggleTheme);
     document.getElementById("header-logo").addEventListener("click", goHome);
     initSearch();
+    initSidebarToggle();
     initMobile();
     initVaultContext();
     initSidebarTabs();

frontend/index.html

@@ -68,6 +68,9 @@
         <button class="hamburger-btn" id="hamburger-btn" title="Menu">
           <i data-lucide="menu" style="width:20px;height:20px"></i>
         </button>
+        <button class="sidebar-toggle-btn" id="sidebar-toggle-btn" title="Afficher/Masquer la sidebar">
+          <i data-lucide="sidebar" style="width:20px;height:20px"></i>
+        </button>
 
         <div class="header-logo" id="header-logo">
           <i data-lucide="book-open" style="width:20px;height:20px"></i>
@@ -161,8 +164,8 @@
 
         <!-- Sidebar filter -->
         <div class="sidebar-filter">
-          <i data-lucide="filter" class="sidebar-filter-icon" style="width:14px;height:14px"></i>
           <div class="sidebar-filter-input-wrapper">
+            <i data-lucide="filter" class="sidebar-filter-icon" style="width:14px;height:14px"></i>
             <input type="text" id="sidebar-filter-input" placeholder="Filtrer fichiers..." autocomplete="off">
             <div class="sidebar-filter-actions">
               <button class="sidebar-filter-btn" id="sidebar-filter-case-btn" type="button" title="Respecter la casse" aria-label="Respecter la casse">

frontend/style.css

@@ -137,6 +137,25 @@ a:hover {
   color: var(--accent);
 }
 
+.sidebar-toggle-btn {
+  display: flex;
+  background: none;
+  border: none;
+  color: var(--text-secondary);
+  cursor: pointer;
+  padding: 4px;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  transition: color 200ms ease;
+}
+.sidebar-toggle-btn:hover {
+  color: var(--accent);
+}
+.sidebar-toggle-btn.active {
+  color: var(--accent);
+}
+
 .header-logo {
   font-family: 'JetBrains Mono', monospace;
   font-weight: 700;
@@ -544,10 +563,17 @@ select {
   display: flex;
   flex-direction: column;
   overflow: hidden;
-  transition: background 200ms ease;
+  transition: background 200ms ease, transform 300ms ease;
   flex-shrink: 0;
 }
 
+.sidebar.hidden {
+  transform: translateX(-100%);
+  width: 0;
+  min-width: 0;
+  border-right: none;
+}
+
 
 /* --- Sidebar filter --- */
 .sidebar-filter {
@@ -557,7 +583,6 @@ select {
   flex-shrink: 0;
   display: flex;
   align-items: center;
-  gap: 6px;
 }
 
 .sidebar-filter-input-wrapper {
@@ -863,7 +888,7 @@ select {
   cursor: ew-resize;
   background: transparent;
   flex-shrink: 0;
-  transition: background 150ms ease;
+  transition: background 150ms ease, opacity 300ms ease;
   z-index: 10;
 }
 .sidebar-resize-handle:hover,
@@ -871,6 +896,11 @@ select {
   background: var(--accent);
   opacity: 0.5;
 }
+.sidebar-resize-handle.hidden {
+  width: 0;
+  opacity: 0;
+  pointer-events: none;
+}
 
 /* --- Content Area --- */
 .content-area {
@@ -1238,6 +1268,20 @@ select {
   color: var(--text-secondary);
   line-height: 1.5;
 }
+.search-result-snippet .search-highlight {
+  background: color-mix(in srgb, var(--accent) 25%, transparent);
+  color: var(--accent);
+  font-weight: 600;
+  padding: 1px 3px;
+  border-radius: 3px;
+}
+.search-result-title .search-highlight {
+  background: color-mix(in srgb, var(--accent) 25%, transparent);
+  color: var(--accent);
+  font-weight: 700;
+  padding: 1px 3px;
+  border-radius: 3px;
+}
 .search-result-tags {
   margin-top: 6px;
   display: flex;
@@ -1759,6 +1803,10 @@ body.resizing-v {
     display: flex;
   }
   
+  .sidebar-toggle-btn {
+    display: none;
+  }
+
   .header {
     gap: 6px;
     padding: 8px 10px;