fix: stop voice transcription polling hang on failed STT

Author: LegendarySumit

app/api/voice.py

@@ -189,6 +189,9 @@ async def process_voice_pipeline(
         print(f"❌ Pipeline error: {str(e)}\n")
         try:
             conversation.status = ConversationStatus.FAILED
+            # Surface a short failure reason for UI polling/status screens.
+            # Keep this concise and non-sensitive for end users.
+            conversation.english_translation = f"Transcription failed: {str(e)[:220]}"
             db.commit()
         except Exception:
             db.rollback()

app/templates/upload.html

@@ -1496,12 +1496,21 @@ <h5 class="mb-0 text-white" id="chatDevName">Developer Name</h5>
 // Poll for Japanese transcription
 async function pollForTranscription() {
     let attempts = 0;
-    const maxAttempts = 30; // 30 seconds max
+    const maxAttempts = 120; // allow up to ~2 minutes on slow cold starts
 
     while (attempts < maxAttempts) {
         try {
             const response = await fetch(`/api/voice/status/${currentConversationId}`);
+            if (!response.ok) {
+                throw new Error(`Status endpoint failed with HTTP ${response.status}`);
+            }
             const data = await response.json();
+
+            // Fail fast on terminal error status instead of waiting for timeout.
+            if (data.status === 'failed') {
+                const reason = data.english_translation || 'Transcription failed during processing.';
+                throw new Error(reason);
+            }
 
             // Check if we have Japanese transcription
             if (data.japanese_transcript) {
@@ -1538,6 +1547,12 @@ <h5 class="mb-0 text-white" id="chatDevName">Developer Name</h5>
 
         } catch (error) {
             console.error('Status poll error:', error);
+            const errorText = String(error?.message || '');
+            if (errorText.toLowerCase().includes('transcription failed')) {
+                alert(errorText);
+                document.getElementById('recordingStatus').textContent = 'Transcription failed. Try again.';
+                return;
+            }
             attempts++;
             await sleep(1000);
         }