debug: Add detailed logging and HTML dump for Amazon scraping

- Add debug logs for each step of product extraction
- Log ASIN, title, link extraction failures
- Save HTML to /tmp/amazon_debug_*.html for inspection
- Enable DEBUG logging level temporarily
- Will help identify why 48 cards found but 0 products extracted

app/main.py

@@ -20,7 +20,7 @@ from app.services.scheduler import start_scheduler as start_catalog_scheduler, s
 
 # Configure logging
 logging.basicConfig(
-    level=os.getenv("LOG_LEVEL", "INFO").upper(),
+    level=os.getenv("LOG_LEVEL", "DEBUG").upper(),  # Temporarily DEBUG for Amazon debugging
     format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
 )
 logger = logging.getLogger(__name__)