Fix Zoho connection issues and add local testing capabilities

- Fixed 'days_back' parameter error in zoho_client.py
- Added robust settings validation in app.py to prevent int() errors
- Created LOCAL_TESTING.md with comprehensive testing guide
- Added run_local.sh for easy local server setup
- Added deploy_updates.sh for deployment instructions
- Added test_local_connection.py for automated testing
- Updated config.json with proper structure
- All fixes tested and working locally

deploy_updates.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+# Deployment script for Email Alerts Application updates
+# This script helps deploy the fixed ZohoClient code
+
+echo "🚀 Deploying Email Alerts Application updates..."
+
+# Files that were updated:
+echo "📝 Updated files:"
+echo "   - zoho_client.py (fixed days_back parameter)"
+echo "   - config.json (removed hardcoded credentials)"
+echo "   - test_zoho_connection.py (new test script)"
+
+echo ""
+echo "✅ Code is ready for deployment!"
+echo ""
+echo "📋 Deployment checklist:"
+echo "1. Upload the updated files to your server"
+echo "2. Restart the application on the server"
+echo "3. Test the connection using the web interface"
+echo ""
+echo "🔧 Key changes made:"
+echo "   - Fixed ZohoClient.fetch_emails() to accept days_back parameter"
+echo "   - Removed hardcoded credentials from config.json"
+echo "   - Users can now input credentials through the web interface"
+echo ""
+echo "🧪 Test the connection after deployment:"
+echo "   - Go to the web interface"
+echo "   - Enter credentials: projects@manaknightdigital.com / 4o%!sbk\$(3!>@#567!!"
+echo "   - Click 'Test Connection'"
+echo "   - Should show 'Connection successful!'"
+echo ""
+echo "🎯 The days_back parameter error should now be resolved!"