amd spoken digit recognition

lib/utils/amd-utils.js

@@ -152,6 +152,18 @@ class Amd extends Emitter {
     if (Array.isArray(t.alternatives) && t.alternatives.length > 0) {
       const wordCount = t.alternatives[0].transcript.split(' ').length;
       const final = t.is_final;
+      const transcript = t.alternatives[0].transcript;
+
+      const digitRegex = /\b(\d{3,})\b/; // 3 or more digits
+      const foundDigits = digitRegex.test(transcript);
+
+      if (foundDigits) {
+        // Emit machine detected if spoken digits are found (applies to both partial and full transcripts)
+        this.emit(this.decision = AmdEvents.MachineDetected, {
+          reason: 'spoken digits',
+          transcript,
+          language: t.language_code
+        });
 
       const foundHint = hints.find((h) =>  t.alternatives[0].transcript.includes(h));
       if (foundHint) {