fix: Log empty OCR results to help debug TextDetector availability

- Cascade OCR now saves a log entry even when no text is detected
- Logs ocrMethod as 'text_detector' or 'not_supported' for debugging
- Helps identify when browsers block the TextDetector API

src/services/cascade-ocr.ts

@@ -246,6 +246,23 @@ export async function runCascadeOCR(imageBlob: Blob): Promise<CascadeOCRResult>
 
     if (!rawText.trim()) {
         console.log('[CascadeOCR] No text detected');
+
+        // Still save to DB for debugging (shows TextDetector availability)
+        const processingTimeMs = performance.now() - startTime;
+        try {
+            await saveOcrLog({
+                rawText: '',
+                detectedTexts: [],
+                confidence: 0,
+                deviceInfo: navigator.userAgent,
+                ocrMethod: 'TextDetector' in window ? 'text_detector' : 'not_supported',
+                processingTimeMs: Math.round(processingTimeMs),
+            });
+            console.log('[CascadeOCR] Empty result logged to DB');
+        } catch (err) {
+            console.warn('[CascadeOCR] Failed to log empty result:', err);
+        }
+
         return {
             success: false,
             distillery: null,
@@ -261,6 +278,7 @@ export async function runCascadeOCR(imageBlob: Blob): Promise<CascadeOCRResult>
         };
     }
 
+
     // Step 2: Extract hard facts via RegEx
     const hardFacts = extractHardFacts(rawText);