fix: resolve duplicate path and fs declarations and implement smart .env multi-path resolution

serviceAccountKey.json

@@ -1,13 +0,0 @@
-{
-  "type": "service_account",
-  "project_id": "mywhatsapp-inta",
-  "private_key_id": "68c0e08c97134c8e2c94245624b24248af1f8206",
-  "private_key": "-----BEGIN PRIVATE KEY-----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\n1y+LOKbfzqvgRB5eFdYfqBdC\n-----END PRIVATE KEY-----\n",
-  "client_email": "firebase-adminsdk-fbsvc@mywhatsapp-inta.iam.gserviceaccount.com",
-  "client_id": "105879704602817836440",
-  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
-  "token_uri": "https://oauth2.googleapis.com/token",
-  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
-  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/firebase-adminsdk-fbsvc%40mywhatsapp-inta.iam.gserviceaccount.com",
-  "universe_domain": "googleapis.com"
-}

whatsapp_bridge/server.js

@@ -16,13 +16,33 @@ const app = express();
 const server = http.createServer(app);
 const wss = new WebSocketServer({ server });
 
-// Load environment variables from .env file
-require('dotenv').config();
+// Load environment variables from .env file (Smart Multi-Path Lookup)
+const path = require('path');
+const fs = require('fs');
+const dotenv = require('dotenv');
+
+const envPaths = [
+  path.join(__dirname, '.env'),                          // whatsapp_bridge/.env
+  path.join(__dirname, '..', '.env'),                     // mywhatsapp.intaleqapp.com/.env
+  '/home/intaleqapp-mywhatsapp/.env'                      // Server user root-level .env (as in user screenshot)
+];
+
+let envLoaded = false;
+for (const envPath of envPaths) {
+  if (fs.existsSync(envPath)) {
+    dotenv.config({ path: envPath });
+    console.log(`[ENV] Successfully loaded environment variables from: ${envPath}`);
+    envLoaded = true;
+    break;
+  }
+}
+if (!envLoaded) {
+  dotenv.config(); // Fallback to default CWD
+  console.log('[ENV] No specific .env found in known paths, loaded default configuration');
+}
 
 // ─── Firebase Admin SDK Configuration (Highly Secure Background Pushes) ─────
 const admin = require('firebase-admin');
-const path = require('path');
-const fs = require('fs');
 
 let firebaseApp = null;