fix: rewrite backup viewer close button — match editor-btn pattern

- Close button: <button class="backup-close-btn"><i data-lucide="x"></i></button>
  (same HTML pattern as AdminPanel editor-btn)
- Handler: addEventListener via DOM query in setBody() after innerHTML
  (same JS pattern as AdminPanel)
- Removed all inline onclick, global capture handler, window._backupViewerClose
- CSS: .backup-close-btn now matches .editor-btn style (bordered icon button)
- Escape key + overlay click still work for closing

frontend/js/backups.js

@@ -23,8 +23,8 @@ const state = {
   path: null,
   backups: [],
   overlay: null,
-  leftVersion: null,   // timestamp of backup shown on left
-  rightVersion: null,  // timestamp of backup shown on right, or null for current
+  leftVersion: null,
+  rightVersion: null,
   diffText: '',
 };
 
@@ -32,11 +32,6 @@ const state = {
 // Public API
 // ---------------------------------------------------------------------------
 
-/**
- * Open the backup/diff viewer for a file.
- * @param {string} vault - Vault name
- * @param {string} path - Relative file path
- */
 export async function openBackupViewer(vault, path) {
   state.vault = vault;
   state.path = path;
@@ -45,16 +40,13 @@ export async function openBackupViewer(vault, path) {
   state.rightVersion = null;
   state.diffText = '';
 
-  // Create and show overlay
   const overlay = createOverlay();
   document.body.appendChild(overlay);
   state.overlay = overlay;
   requestAnimationFrame(() => overlay.classList.add('active'));
 
-  // Show loading state
   setBody(renderLoading());
 
-  // Fetch backups
   try {
     const data = await api(`/api/file/${encodeURIComponent(vault)}/backups?path=${encodeURIComponent(path)}`);
     state.backups = data.backups || [];
@@ -69,14 +61,9 @@ export async function openBackupViewer(vault, path) {
     return;
   }
 
-  // Auto-select: left = most recent, right = current
   state.leftVersion = state.backups[0].timestamp;
   state.rightVersion = null;
-
-  // Render version selectors
   renderMainView();
-
-  // Load initial diff
   await loadDiff();
 }
 
@@ -84,16 +71,6 @@ export async function openBackupViewer(vault, path) {
 // DOM helpers
 // ---------------------------------------------------------------------------
 
-// Global click handler: catches close button clicks anywhere in the document
-document.addEventListener('click', function(e) {
-  const btn = e.target.closest ? e.target.closest('.backup-close-btn') : null;
-  if (btn && state.overlay) {
-    e.stopPropagation();
-    e.preventDefault();
-    close();
-  }
-}, true);  // capture phase — fires before other handlers
-
 function createOverlay() {
   const overlay = document.createElement('div');
   overlay.className = 'obsigate-modal-overlay backup-viewer-overlay';
@@ -108,25 +85,33 @@ function createOverlay() {
 
   // Keyboard: Escape closes the viewer
   _escHandler = (e) => {
-    if (e.key === 'Escape' && state.overlay) {
-      close();
-    }
+    if (e.key === 'Escape' && state.overlay) close();
   };
   document.addEventListener('keydown', _escHandler);
 
   return overlay;
 }
 
+/** Replace panel content and re-bind the close button. */
 function setBody(html) {
   const panel = document.getElementById('backup-viewer-panel');
-  if (panel) panel.innerHTML = html;
+  if (!panel) return;
+  panel.innerHTML = html;
+  safeCreateIcons();
+  // Bind close button — same pattern as AdminPanel
+  const closeBtn = panel.querySelector('.backup-close-btn');
+  if (closeBtn) {
+    closeBtn.addEventListener('click', (e) => {
+      e.stopPropagation();
+      close();
+    });
+  }
 }
 
 let _escHandler = null;
 
 function close() {
   if (!state.overlay) return;
-  // Remove keyboard listener
   if (_escHandler) {
     document.removeEventListener('keydown', _escHandler);
     _escHandler = null;
@@ -138,18 +123,18 @@ function close() {
   }, 200);
 }
 
-// Expose globally for inline onclick handlers
-window._backupViewerClose = close;
-
 // ---------------------------------------------------------------------------
 // Rendering
 // ---------------------------------------------------------------------------
 
+/** Close button HTML — same pattern as AdminPanel editor-btn */
+const CLOSE_BTN = '<button class="backup-close-btn" title="Fermer"><i data-lucide="x" style="width:16px;height:16px"></i></button>';
+
 function renderLoading() {
   return `
     <div class="backup-header">
       <h3>Backups</h3>
-      <button class="backup-close-btn" title="Fermer" onclick="window._backupViewerClose()">&times;</button>
+      ${CLOSE_BTN}
     </div>
     <div class="backup-body">
       <div class="tree-loading" style="padding:2rem;text-align:center">
@@ -160,10 +145,10 @@ function renderLoading() {
 }
 
 function renderError(msg) {
-  return \`
+  return `
     <div class="backup-header">
       <h3>Backups</h3>
-      <button class="backup-close-btn" title="Fermer" onclick="window._backupViewerClose()">&times;</button>
+      ${CLOSE_BTN}
     </div>
     <div class="backup-body" style="text-align:center;padding:2rem;color:var(--text-muted)">
       <p>${escapeHtml(msg)}</p>
@@ -171,10 +156,10 @@ function renderError(msg) {
 }
 
 function renderEmpty() {
-  return \`
+  return `
     <div class="backup-header">
-      <h3>Backups — \${escapeHtml(state.path)}</h3>
-      <button class="backup-close-btn" title="Fermer" onclick="window._backupViewerClose()">&times;</button>
+      <h3>Backups — ${escapeHtml(state.path)}</h3>
+      ${CLOSE_BTN}
     </div>
     <div class="backup-body" style="text-align:center;padding:2rem;color:var(--text-muted)">
       <p>Aucun backup disponible pour ce fichier.</p>
@@ -205,7 +190,7 @@ function renderMainView() {
       </div>
       <div class="backup-header-right">
         <span class="backup-count">${b.length} backup${b.length > 1 ? 's' : ''}</span>
-        <button class="backup-close-btn" title="Fermer" onclick="window._backupViewerClose()">&times;</button>
+        ${CLOSE_BTN}
       </div>
     </div>
 
@@ -234,10 +219,7 @@ function renderMainView() {
     </div>`;
 
   setBody(html);
-
-  // Bind events
   bindEvents();
-  safeCreateIcons();
 }
 
 // ---------------------------------------------------------------------------
@@ -245,17 +227,12 @@ function renderMainView() {
 // ---------------------------------------------------------------------------
 
 function bindEvents() {
-  const panel = document.getElementById('backup-viewer-panel');
-  if (!panel) return;
-
-  // Left select
   const leftSelect = document.getElementById('backup-left-select');
   leftSelect?.addEventListener('change', async () => {
     state.leftVersion = parseInt(leftSelect.value);
     await loadDiff();
   });
 
-  // Right select
   const rightSelect = document.getElementById('backup-right-select');
   rightSelect?.addEventListener('change', async () => {
     const val = rightSelect.value;
@@ -263,7 +240,6 @@ function bindEvents() {
     await loadDiff();
   });
 
-  // Restore button
   const restoreBtn = document.getElementById('backup-restore-btn');
   restoreBtn?.addEventListener('click', async () => {
     await restoreBackup();
@@ -324,10 +300,8 @@ async function restoreBackup() {
 
     if (resp && resp.success) {
       showToast('Fichier restauré avec succès', 'success');
-      // Refresh sidebar and close
       await refreshSidebarTreePreservingState();
       close();
-      // Reload current file if open
       if (typeof TabManager !== 'undefined' && TabManager.reloadCurrent) {
         TabManager.reloadCurrent();
       }
@@ -360,20 +334,10 @@ function renderDiff(diffText) {
   for (const line of lines) {
     let cssClass = 'diff-context';
     let prefix = ' ';
-
-    if (line.startsWith('@@')) {
-      cssClass = 'diff-hunk';
-      prefix = '';
-    } else if (line.startsWith('+')) {
-      cssClass = 'diff-add';
-      prefix = '+';
-    } else if (line.startsWith('-')) {
-      cssClass = 'diff-del';
-      prefix = '-';
-    } else if (line.startsWith('---') || line.startsWith('+++')) {
-      cssClass = 'diff-header-line';
-      prefix = '';
-    }
+    if (line.startsWith('@@')) { cssClass = 'diff-hunk'; prefix = ''; }
+    else if (line.startsWith('+')) { cssClass = 'diff-add'; prefix = '+'; }
+    else if (line.startsWith('-')) { cssClass = 'diff-del'; prefix = '-'; }
+    else if (line.startsWith('---') || line.startsWith('+++')) { cssClass = 'diff-header-line'; prefix = ''; }
 
     html += `<tr class="${cssClass}"><td class="diff-prefix">${prefix}</td><td class="diff-content"><pre>${escapeHtml(line)}</pre></td></tr>`;
   }

frontend/style.css

@@ -7250,24 +7250,24 @@ body.popup-mode .content-area {
 }
 
 .backup-close-btn {
-  width: 32px;
-  height: 32px;
-  border: none;
+  width: 36px;
+  height: 36px;
+  padding: 0;
+  border: 1px solid var(--border);
   border-radius: 6px;
   background: transparent;
-  color: var(--text-muted);
-  font-size: 1.4rem;
+  color: var(--text-secondary);
   cursor: pointer;
-  display: flex;
+  transition: all 150ms ease;
+  display: inline-flex;
   align-items: center;
   justify-content: center;
-  line-height: 1;
-  transition: color 0.15s, background 0.15s;
+  flex: 0 0 auto;
 }
 
 .backup-close-btn:hover {
-  color: var(--text-primary);
-  background: var(--bg-tertiary);
+  color: var(--accent);
+  border-color: var(--accent);
 }
 
 .backup-toolbar {