chore: update Angular cache and TypeScript build info files

server/index.mjs

@@ -478,9 +478,26 @@ app.put('/api/vault/bookmarks', (req, res) => {
       }
     }
 
-    // Write bookmarks
+    // Create backup before writing
+    const backupPath = bookmarksPath + '.bak';
+    if (fs.existsSync(bookmarksPath)) {
+      fs.copyFileSync(bookmarksPath, backupPath);
+    }
+
+    // Atomic write: write to temp file, then rename
+    const tempPath = bookmarksPath + '.tmp';
     const content = JSON.stringify(req.body, null, 2);
-    fs.writeFileSync(bookmarksPath, content, 'utf-8');
+    
+    try {
+      fs.writeFileSync(tempPath, content, 'utf-8');
+      fs.renameSync(tempPath, bookmarksPath);
+    } catch (writeError) {
+      // If write failed, restore backup if it exists
+      if (fs.existsSync(backupPath)) {
+        fs.copyFileSync(backupPath, bookmarksPath);
+      }
+      throw writeError;
+    }
 
     const newRev = calculateSimpleHash(content);
     res.json({ rev: newRev });