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

app.py

@@ -100,7 +100,8 @@ def update_settings():
         config['zoho_app_password'] = request.form.get('zoho_app_password', config.get('zoho_app_password', ''))
         
         # Update email days back
-        config['email_days_back'] = int(request.form.get('email_days_back', 7))
+        email_days_back = request.form.get('email_days_back', '7')
+        config['email_days_back'] = int(email_days_back) if email_days_back.strip() else 7
         
         # Update agency domains
         agency_domains = request.form.get('agency_domains', '').split(',')
@@ -114,11 +115,15 @@ def update_settings():
         
         for i in range(len(frame_names)):
             if frame_names[i] and frame_hours[i] and frame_levels[i]:
-                time_frames.append({
-                    'name': frame_names[i],
-                    'hours': int(frame_hours[i]),
-                    'alert_level': int(frame_levels[i])
-                })
+                try:
+                    time_frames.append({
+                        'name': frame_names[i],
+                        'hours': int(frame_hours[i]),
+                        'alert_level': int(frame_levels[i])
+                    })
+                except ValueError:
+                    # Skip invalid time frames
+                    continue
         
         # Sort time frames by hours
         time_frames.sort(key=lambda x: x['hours'])
@@ -126,7 +131,8 @@ def update_settings():
         
         # Update auto processing settings
         config['auto_process'] = request.form.get('auto_process') == 'on'
-        config['auto_process_interval'] = int(request.form.get('auto_process_interval', 30))
+        auto_process_interval = request.form.get('auto_process_interval', '30')
+        config['auto_process_interval'] = int(auto_process_interval) if auto_process_interval.strip() else 30
         
         save_config(config)
         flash('Settings updated successfully!', 'success')
@@ -213,7 +219,7 @@ def test_connection():
         processor = EmailProcessor(agency_domains=config['agency_domains'])
         
         # Test connection by fetching a small number of emails
-        emails = processor.zoho_client.fetch_emails(max_results=5, days_back=config['email_days_back'])
+        emails = processor.zoho_client.fetch_emails(max_results=3, days_back=config['email_days_back'])
         
         return jsonify({
             'status': 'success',