Fix scan output file paths and improve notification system

- Save JSON/HTML/ZIP paths to database when scans complete
- Remove orphaned scan-config-id reference causing JS errors
- Add showAlert function to scan_detail.html and scans.html
- Increase notification z-index to 9999 for modal visibility
- Replace inline alert creation with consistent toast notifications

app/web/services/scan_service.py

@@ -308,7 +308,7 @@ class ScanService:
         return count
 
     def _save_scan_to_db(self, report: Dict[str, Any], scan_id: int,
-                        status: str = 'completed') -> None:
+                        status: str = 'completed', output_paths: Dict = None) -> None:
         """
         Save scan results to database.
 
@@ -319,6 +319,7 @@ class ScanService:
             report: Scan report dictionary from scanner
             scan_id: Scan ID to update
             status: Final scan status (completed or failed)
+            output_paths: Dictionary with paths to generated files {'json': Path, 'html': Path, 'zip': Path}
         """
         scan = self.db.query(Scan).filter(Scan.id == scan_id).first()
         if not scan:
@@ -329,6 +330,15 @@ class ScanService:
         scan.duration = report.get('scan_duration')
         scan.completed_at = datetime.utcnow()
 
+        # Save output file paths
+        if output_paths:
+            if 'json' in output_paths:
+                scan.json_path = str(output_paths['json'])
+            if 'html' in output_paths:
+                scan.html_path = str(output_paths['html'])
+            if 'zip' in output_paths:
+                scan.zip_path = str(output_paths['zip'])
+
         # Map report data to database models
         self._map_report_to_models(report, scan)