Fix phone number speech formatting for agent announcements

Updated the format_phone_number_for_speech function to properly read phone numbers digit by digit instead of as large numbers.

Changes:
- Phone number 9095737372 now reads as "9 0 9, 5 7 3, 7 3 7 2"
- Instead of "nine hundred nine, five hundred seventy three"
- Added proper digit separation with commas for natural speech flow
- Handles both 10-digit and 11-digit (with country code) numbers
- Strips all non-numeric characters before processing

This makes the agent announcement much clearer when receiving forwarded calls.

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

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

includes/class-twp-webhooks.php

@@ -2975,17 +2975,32 @@ class TWP_Webhooks {
     }
 
     /**
-     * Format phone number for speech (adds pauses between digits)
+     * Format phone number for speech (reads each digit individually)
      */
     private function format_phone_number_for_speech($number) {
-        // Remove +1 country code and format for speech
+        // Remove +1 country code and any formatting
         $cleaned = preg_replace('/^\+1/', '', $number);
+        $cleaned = preg_replace('/[^0-9]/', '', $cleaned);
 
         if (strlen($cleaned) == 10) {
-            // Format as (xxx) xxx-xxxx with pauses
-            return substr($cleaned, 0, 3) . ' ' . substr($cleaned, 3, 3) . ' ' . substr($cleaned, 6, 4);
+            // Break into individual digits with pauses for natural speech
+            // Area code: 9-0-9, Main number: 5-7-3-7-3-7-2
+            $area_code = str_split(substr($cleaned, 0, 3));
+            $exchange = str_split(substr($cleaned, 3, 3));
+            $number_part = str_split(substr($cleaned, 6, 4));
+
+            // Join with spaces so TTS reads each digit individually
+            return implode(' ', $area_code) . ', ' . implode(' ', $exchange) . ', ' . implode(' ', $number_part);
+        } elseif (strlen($cleaned) == 11 && substr($cleaned, 0, 1) == '1') {
+            // Handle numbers that still have the 1 prefix
+            $area_code = str_split(substr($cleaned, 1, 3));
+            $exchange = str_split(substr($cleaned, 4, 3));
+            $number_part = str_split(substr($cleaned, 7, 4));
+
+            return implode(' ', $area_code) . ', ' . implode(' ', $exchange) . ', ' . implode(' ', $number_part);
         }
 
-        return $number;
+        // Fallback: just break into individual digits
+        return implode(' ', str_split($cleaned));
     }
 }