fix: AV_MISMATCH shows as DEEPFAKE (red) not yellow warning

- Frontend: AV_MISMATCH uses same red color + gpp_bad icon as AI_VOICE
- Verdict label shows 'DEEPFAKE (AV MISMATCH)'
- Backend: AV_MISMATCH overrides visual REAL verdict to FAKE
- Both AI_VOICE and AV_MISMATCH count as audio_fake in final decision

backend/detector.py

@@ -446,22 +446,25 @@ class ReportGeneratorAgent:
         audio_prob = 0.0
         if audio and audio.get("available"):
             audio_prob = audio.get("fake_probability", 0.0)
-            audio_fake = audio.get("result") == "AI_VOICE"
+            # AV_MISMATCH counts as fake — face-swap with dubbed audio
+            audio_fake = audio.get("result") in ("AI_VOICE", "AV_MISMATCH")
 
         # Final verdict: visual is primary, audio can upgrade OR downgrade
         if audio and audio.get("available"):
-            # Both agree → high confidence
             if visual_fake and audio_fake:
                 is_fake = True
             elif not visual_fake and not audio_fake:
                 is_fake = False
-            # Disagreement → visual wins but audio nudges the score
             elif visual_fake and not audio_fake:
                 # Audio says real — only keep FAKE if visual is strong
                 is_fake = prob >= (threshold + 0.05)
             else:
-                # Visual says real but audio says AI — flag as suspicious
-                is_fake = audio_prob >= 0.75  # only override if audio is very confident
+                # Visual says real but audio says AI/mismatch
+                # AV_MISMATCH is a very strong signal — override visual
+                if audio.get("result") == "AV_MISMATCH":
+                    is_fake = True   # face-swap confirmed by mismatch
+                else:
+                    is_fake = audio_prob >= 0.75
         else:
             is_fake = visual_fake
 

frontend-vanilla/index.html

@@ -1219,14 +1219,15 @@ function renderTimeline(frames) {
 function renderAudio(audio) {
   const isAI       = audio.result === 'AI_VOICE';
   const isMismatch = audio.result === 'AV_MISMATCH';
-  const color      = isMismatch ? '#ffdd65' : (isAI ? '#ffb4ab' : '#00ff9c');
+  const isFakeAudio = isAI || isMismatch;   // both mean FAKE
+  const color       = isFakeAudio ? '#ffb4ab' : '#00ff9c';
 
   const icon = document.getElementById('audioIcon');
-  icon.textContent = isMismatch ? 'warning' : (isAI ? 'smart_toy' : 'record_voice_over');
+  icon.textContent = isFakeAudio ? 'gpp_bad' : 'record_voice_over';
   icon.style.color = color;
 
   const verdict = document.getElementById('audioVerdict');
-  verdict.textContent = isMismatch ? '⚠ AV MISMATCH' : (audio.result || '--');
+  verdict.textContent = isMismatch ? 'DEEPFAKE (AV MISMATCH)' : (isAI ? 'AI_VOICE' : 'HUMAN_VOICE');
   verdict.style.color = color;
 
   document.getElementById('audioConfidence').textContent =
@@ -1247,9 +1248,9 @@ function renderAudio(audio) {
   if (audio.details && audio.details.length) {
     detailsEl.innerHTML = audio.details.map(d => `
       <div class="flex items-start gap-3 p-3 bg-surface-container-low/50 border border-outline-variant/30 rounded-DEFAULT"
-           style="${isMismatch ? 'border-color:rgba(255,221,101,0.3);background:rgba(255,221,101,0.05);' : ''}">
-        <span class="material-symbols-outlined text-[16px] mt-0.5" style="color:${color};">${isMismatch ? 'warning' : 'chevron_right'}</span>
-        <span class="font-data-mono text-data-mono text-sm" style="color:${isMismatch ? '#ffdd65cc' : '#b9cbbc'};">${escHtml(d)}</span>
+           style="${isFakeAudio ? 'border-color:rgba(255,180,171,0.3);background:rgba(255,180,171,0.04);' : ''}">
+        <span class="material-symbols-outlined text-[16px] mt-0.5" style="color:${color};">chevron_right</span>
+        <span class="font-data-mono text-data-mono text-sm" style="color:#b9cbbc;">${escHtml(d)}</span>
       </div>`).join('');
   } else {
     detailsEl.innerHTML = '';