Refactored to use single EMBEDDING_API_KEY for all providers

Author: mrlynn

examples/basic-usage.js

@@ -1,12 +1,11 @@
-// examples/basic-usage.js
 import { MongoRAG } from '../src/index.js';
 import dotenv from 'dotenv';
 
 // Load environment variables
 dotenv.config();
 
 // Debug loading of environment variables
-console.log('Environment variables loaded:', {
+console.log('Loaded ENV:', {
   mongoUri: process.env.MONGODB_URI ? 'Set' : 'Not set',
   provider: process.env.EMBEDDING_PROVIDER || 'openai',
   apiKey: process.env.EMBEDDING_API_KEY ? 'Set' : 'Not set'

src/core/MongoRAG.js

@@ -213,7 +213,6 @@ class MongoRAG {
             }
         }
     }
-    
 
 }