fix: échappement cassé dans _loadPreviewContent — quotes échappées causaient SyntaxError

- window.location=\\'/path\\'" → <a href="..."> (évite onclick inline échappé)
- onerror="this.parentElement.innerHTML=\\'...\\'" → onerror="this.style.display='none'"
- Ces doubles-échappements injectés par le patch tool cassaient le parsing JS
- Résultat: Alpine.data('wsInit') ne s'exécutait pas → toutes variables 'not defined'

app/templates/local_workspace.html

@@ -1159,7 +1159,7 @@ document.addEventListener('alpine:init', function() {
         this.previewPanelContent = '<div style="text-align:center;padding:40px;color:var(--text-secondary)">'
           + '<span style="font-size:48px;display:block;margin-bottom:12px">📁</span>'
           + '<div style="font-size:14px">' + (node.child_count||0) + ' item(s)</div>'
-          + '<button class="btn btn-secondary" style="margin-top:16px" onclick="window.location=\\'/local-workspace?folder=' + node.id + '\\'">Open folder</button>'
+          + '<a href="/local-workspace?folder=' + node.id + '" class="btn btn-secondary" style="display:inline-block;text-decoration:none;margin-top:16px">Open folder</a>'
           + '</div>';
         return;
       }
@@ -1167,10 +1167,10 @@ document.addEventListener('alpine:init', function() {
         var name = (node.name || '').toLowerCase();
         // Image preview
         if (/\.(png|jpe?g|gif|webp|svg|bmp|ico)$/.test(name)) {
-          var wsId = 1; // from workspace
+          var wsId = 1;
           var imgUrl = '/api/files/' + wsId + '/' + encodeURIComponent(node.name);
           this.previewPanelContent = '<div style="text-align:center;padding:12px;">'
-            + '<img src="' + imgUrl + '" style="max-width:100%;max-height:50vh;border-radius:8px;" onerror="this.parentElement.innerHTML=\\'<div style=padding:20px;color:var(--text-tertiary)>Image not available</div>\\'">'
+            + '<img src="' + imgUrl + '" style="max-width:100%;max-height:50vh;border-radius:8px;" onerror="this.style.display=\'none\'">'
             + '</div>';
           return;
         }
@@ -1189,7 +1189,6 @@ document.addEventListener('alpine:init', function() {
         var format = r.format || '';
         var preview = '';
         if (format === 'file') {
-          // Try to detect image/pdf from content metadata
           try {
             var meta = JSON.parse(content);
             if (meta.file_path && /\.(png|jpe?g|gif|webp|svg|bmp|ico)$/i.test(meta.file_path)) {