fix email links, add deploy script, update README

src/notifier/email_notifier.py

@@ -90,11 +90,19 @@ class EmailNotifier:
             address = result.get('address', 'N/A')
             link = result.get('link', '#')
             
+            # Handle empty or None links
+            if not link or link == '#' or link == 'None':
+                link_display = 'Kein Link'
+                link_href = '#'
+            else:
+                link_display = 'Details'
+                link_href = link
+            
             html += f"""
                 <tr>
                     <td>{plz}</td>
                     <td>{address}</td>
-                    <td><a href="{link}">Details</a></td>
+                    <td><a href="{link_href}" target="_blank">{link_display}</a></td>
                 </tr>
             """