v8.0.0: Fix speech recognition repeating text, enable AWS Transcribe Medical

- Add deduplication logic to prevent Chrome Speech API from repeating
  sentences during long recording sessions (all 4 recording modules)
- Enable AWS Transcribe Medical with PRIMARYCARE specialty in .env
- Bump version to 8.0.0

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pediatric-ai-scribe",
-  "version": "7.0.0",
+  "version": "8.0.0",
   "description": "AI-powered pediatric clinical documentation platform",
   "main": "server.js",
   "scripts": {

public/js/app.js

@@ -542,9 +542,32 @@ function createSpeechRecognition() {
   rec.continuous = true;
   rec.interimResults = true;
   rec.lang = 'en-US';
+  rec.maxAlternatives = 1;
   return rec;
 }
 
+// Deduplicate speech recognition finals — Chrome can repeat text across restarts
+function deduplicateFinal(newText, existingText) {
+  if (!newText || !existingText) return newText;
+  var trimmed = newText.trim();
+  if (!trimmed) return '';
+  // Check if the new text is already at the end of existing text
+  if (existingText.trimEnd().endsWith(trimmed)) return '';
+  // Check for partial overlap (last sentence repeated)
+  var words = trimmed.split(/\s+/);
+  if (words.length >= 3) {
+    var tail = existingText.trimEnd().split(/\s+/).slice(-words.length).join(' ');
+    if (tail === trimmed) return '';
+    // Check if first half of new text overlaps with end of existing
+    var half = Math.ceil(words.length / 2);
+    var firstHalf = words.slice(0, half).join(' ');
+    if (existingText.trimEnd().endsWith(firstHalf)) {
+      return words.slice(half).join(' ') + ' ';
+    }
+  }
+  return newText;
+}
+
 // PWA Service Worker
 if ('serviceWorker' in navigator) {
   navigator.serviceWorker.register('/sw.js').catch(function() {});

public/js/liveEncounter.js

@@ -28,8 +28,13 @@
     recognition.onresult = function(e) {
       var interim = '';
       for (var i = e.resultIndex; i < e.results.length; i++) {
-        if (e.results[i].isFinal) sessionFinals += e.results[i][0].transcript + ' ';
-        else interim = e.results[i][0].transcript;
+        if (e.results[i].isFinal) {
+          var chunk = e.results[i][0].transcript + ' ';
+          var deduped = deduplicateFinal(chunk, finalText + sessionFinals);
+          sessionFinals += deduped;
+        } else {
+          interim = e.results[i][0].transcript;
+        }
       }
       var combined = finalText + sessionFinals;
       transcript.innerHTML = escHtml(combined) + (interim ? '<span style="color:#9ca3af;">' + escHtml(interim) + '</span>' : '');
@@ -39,7 +44,10 @@
       sessionFinals = '';
       if (isRecording && !isPaused) try { recognition.start(); } catch(e) {}
     };
-    recognition.onerror = function() {};
+    recognition.onerror = function(e) {
+      if (e.error === 'no-speech' || e.error === 'aborted') return;
+      console.warn('[SpeechRecognition] error:', e.error);
+    };
   }
 
   recordBtn.addEventListener('click', function() {

public/js/soap.js

@@ -26,8 +26,13 @@
     recognition.onresult = function(e) {
       var interim = '';
       for (var i = e.resultIndex; i < e.results.length; i++) {
-        if (e.results[i].isFinal) sessionFinals += e.results[i][0].transcript + ' ';
-        else interim = e.results[i][0].transcript;
+        if (e.results[i].isFinal) {
+          var chunk = e.results[i][0].transcript + ' ';
+          var deduped = deduplicateFinal(chunk, finalText + sessionFinals);
+          sessionFinals += deduped;
+        } else {
+          interim = e.results[i][0].transcript;
+        }
       }
       var combined = finalText + sessionFinals;
       transcript.innerHTML = escHtml(combined) + (interim ? '<span style="color:#9ca3af;">' + escHtml(interim) + '</span>' : '');

public/js/voiceDictation.js

@@ -28,8 +28,13 @@
     recognition.onresult = function(e) {
       var interim = '';
       for (var i = e.resultIndex; i < e.results.length; i++) {
-        if (e.results[i].isFinal) sessionFinals += e.results[i][0].transcript + ' ';
-        else interim = e.results[i][0].transcript;
+        if (e.results[i].isFinal) {
+          var chunk = e.results[i][0].transcript + ' ';
+          var deduped = deduplicateFinal(chunk, finalText + sessionFinals);
+          sessionFinals += deduped;
+        } else {
+          interim = e.results[i][0].transcript;
+        }
       }
       var combined = finalText + sessionFinals;
       transcript.innerHTML = escHtml(combined) + (interim ? '<span style="color:#9ca3af;">' + escHtml(interim) + '</span>' : '');