Add WordPress timezone support and fix dashboard phone number display

- Add format_timestamp_with_timezone() helper to convert UTC to WP timezone
- Update all timestamp displays to use WordPress timezone setting
- Fix dashboard showing call SID instead of phone numbers in From field
- Fix dashboard showing "System" instead of actual phone numbers in To field
- Query actual from_number and to_number fields for dashboard display

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

admin/class-twp-admin.php

@@ -32,6 +32,27 @@ class TWP_Admin {
         return false;
     }
     
+    /**
+     * Format timestamp with WordPress timezone
+     * 
+     * @param string $timestamp Database timestamp (assumed to be in UTC)
+     * @param string $format Date format string
+     * @return string Formatted date in WordPress timezone
+     */
+    private function format_timestamp_with_timezone($timestamp, $format = 'M j, Y g:i A') {
+        // Get WordPress timezone
+        $timezone = wp_timezone();
+        
+        // Create DateTime object from the UTC timestamp
+        $date = new DateTime($timestamp, new DateTimeZone('UTC'));
+        
+        // Convert to WordPress timezone
+        $date->setTimezone($timezone);
+        
+        // Return formatted date
+        return $date->format($format);
+    }
+    
     /**
      * Register admin menu
      */
@@ -2527,7 +2548,7 @@ class TWP_Admin {
                             foreach ($recent_calls as $call) {
                                 ?>
                                 <tr>
-                                    <td><?php echo esc_html(date('M j, Y g:i A', strtotime($call->created_at))); ?></td>
+                                    <td><?php echo esc_html($this->format_timestamp_with_timezone($call->created_at)); ?></td>
                                     <td><?php echo esc_html($call->from_number ?: 'N/A'); ?></td>
                                     <td><?php echo esc_html($call->to_number ?: 'N/A'); ?></td>
                                     <td><?php echo esc_html($call->agent_name ?: 'N/A'); ?></td>
@@ -2651,7 +2672,7 @@ class TWP_Admin {
         foreach ($voicemails as $voicemail) {
             ?>
             <tr>
-                <td><?php echo esc_html(date('M j, Y g:i A', strtotime($voicemail->created_at))); ?></td>
+                <td><?php echo esc_html($this->format_timestamp_with_timezone($voicemail->created_at)); ?></td>
                 <td><?php echo esc_html($voicemail->from_number); ?></td>
                 <td><?php echo esc_html($voicemail->workflow_name ?: 'N/A'); ?></td>
                 <td><?php echo $voicemail->duration ? esc_html($voicemail->duration . 's') : 'Unknown'; ?></td>
@@ -2704,7 +2725,7 @@ class TWP_Admin {
         foreach ($logs as $log) {
             ?>
             <tr>
-                <td><?php echo esc_html(date('M j, Y g:i A', strtotime($log->created_at))); ?></td>
+                <td><?php echo esc_html($this->format_timestamp_with_timezone($log->created_at)); ?></td>
                 <td><?php echo esc_html($log->from_number ?: 'Unknown'); ?></td>
                 <td><?php echo esc_html($log->to_number ?: 'System'); ?></td>
                 <td>
@@ -3391,9 +3412,9 @@ class TWP_Admin {
             }
             
             if ($log_table_exists) {
-                // Get recent calls from last 24 hours
+                // Get recent calls from last 24 hours with phone numbers
                 $recent_calls = $wpdb->get_results(
-                    "SELECT call_sid, status, duration, updated_at 
+                    "SELECT call_sid, from_number, to_number, status, duration, updated_at 
                      FROM $log_table 
                      WHERE updated_at >= DATE_SUB(NOW(), INTERVAL 24 HOUR) 
                      ORDER BY updated_at DESC 
@@ -3407,10 +3428,14 @@ class TWP_Admin {
         
         $formatted_calls = array();
         foreach ($recent_calls as $call) {
+            // Format phone numbers for display
+            $from_display = $call->from_number ?: 'Unknown';
+            $to_display = $call->to_number ?: 'Unknown';
+            
             $formatted_calls[] = array(
-                'time' => date('H:i', strtotime($call->updated_at)),
+                'time' => $this->format_timestamp_with_timezone($call->updated_at, 'H:i'),
-                'from' => substr($call->call_sid, 0, 10) . '...',
+                'from' => $from_display,
-                'to' => 'System',
+                'to' => $to_display,
                 'status' => ucfirst($call->status),
                 'duration' => $call->duration ? $call->duration . 's' : '-'
             );
@@ -4720,7 +4745,7 @@ class TWP_Admin {
                                         <br><small style="color: #666;">Received on</small>
                                     </td>
                                     <td>
-                                        <?php echo esc_html(date('M j, H:i', strtotime($conversation->last_message_time))); ?>
+                                        <?php echo esc_html($this->format_timestamp_with_timezone($conversation->last_message_time, 'M j, H:i')); ?>
                                         <br>
                                         <small style="color: <?php echo $conversation->last_message_direction === 'incoming' ? '#d63384' : '#0f5132'; ?>;">
                                             <?php echo $conversation->last_message_direction === 'incoming' ? '← Received' : '→ Sent'; ?>