fix: backup viewer close button — add missing onclick to renderError + Escape key + proper cleanup

frontend/js/backups.js

@@ -91,6 +91,14 @@ function createOverlay() {
     if (e.target === overlay) close();
   });
 
+  // Keyboard: Escape closes the viewer
+  _escHandler = (e) => {
+    if (e.key === 'Escape' && state.overlay) {
+      close();
+    }
+  };
+  document.addEventListener('keydown', _escHandler);
+
   const panel = document.createElement('div');
   panel.className = 'backup-viewer-panel';
   panel.id = 'backup-viewer-panel';
@@ -124,17 +132,23 @@ function setBody(html) {
   }
 }
 
+let _escHandler = null;
+
 function close() {
-  if (state.overlay) {
-    state.overlay.classList.remove('active');
-    setTimeout(() => {
-      if (state.overlay) state.overlay.remove();
-      state.overlay = null;
-    }, 200);
+  if (!state.overlay) return;
+  // Remove keyboard listener
+  if (_escHandler) {
+    document.removeEventListener('keydown', _escHandler);
+    _escHandler = null;
   }
+  state.overlay.classList.remove('active');
+  setTimeout(() => {
+    if (state.overlay) state.overlay.remove();
+    state.overlay = null;
+  }, 200);
 }
 
-// Expose globally for inline onclick handlers (bypasses text-node target issues)
+// Expose globally for inline onclick handlers
 window._backupViewerClose = close;
 
 // ---------------------------------------------------------------------------
@@ -156,10 +170,10 @@ function renderLoading() {
 }
 
 function renderError(msg) {
-  return `
+  return \`
     <div class="backup-header">
       <h3>Backups</h3>
-      <button class="backup-close-btn" title="Fermer">&times;</button>
+      <button class="backup-close-btn" title="Fermer" onclick="window._backupViewerClose()">&times;</button>
     </div>
     <div class="backup-body" style="text-align:center;padding:2rem;color:var(--text-muted)">
       <p>${escapeHtml(msg)}</p>