fix: misc write issues with fs + openrouter refresh (#3125)

* feat: refresh openrouter models every 15 min

* fix: if no extensions, skip build step

* fix: misc write issues with fs

src/gui/webpack/BaseConfig.cjs

@@ -34,7 +34,7 @@ module.exports = async (options = {}) => {
     const entries = [];
 
     for ( const extensionsDir of extension_directories ) {
-        // console.log(`Reading extensions from ${extensionsDir}`);
+        if ( ! fs.existsSync(extensionsDir) ) continue;
         // Read and process extension entries from the extensions directory
         const readdir_entries = fs.readdirSync(extensionsDir, { withFileTypes: true });
         for ( const entry of readdir_entries ) {