fix: resolve auto-update npm permission errors and dependency installation issues

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Co-Authored-By: Claude <noreply@anthropic.com>

server/updateManager.js

@@ -259,7 +259,7 @@ class UpdateManager {
 
             // Install dependencies
             console.log('[UpdateManager] Installing dependencies...');
-            await execAsync(`cd "${pulseDir}" && npm ci --production`);
+            await execAsync(`cd "${pulseDir}" && rm -rf node_modules && npm install --omit=dev`);
 
             if (progressCallback) {
                 progressCallback({ phase: 'apply', progress: 100 });