feat: add license flags display to model preview tooltip #613

- Add optional license_flags parameter to model preview API endpoint
- Include license flags in response when requested via query parameter
- Add CSS styles for license overlay and icons in tooltip
- Implement license flag parsing and icon mapping logic
- Display license restrictions as icons in preview tooltip overlay

This allows users to see model license restrictions directly in the preview tooltip without needing to navigate to detailed model information pages.

py/routes/handlers/model_handlers.py

@@ -659,9 +659,16 @@ class ModelQueryHandler:
             model_name = request.query.get("name")
             if not model_name:
                 return web.Response(text=f"{self._service.model_type.capitalize()} file name is required", status=400)
+            include_license_flags = (request.query.get("license_flags", "").strip().lower() in {"1", "true", "yes", "on"})
             preview_url = await self._service.get_model_preview_url(model_name)
             if preview_url:
-                return web.json_response({"success": True, "preview_url": preview_url})
+                response_payload: dict[str, object] = {"success": True, "preview_url": preview_url}
+                if include_license_flags:
+                    model_data = await self._service.get_model_info_by_name(model_name)
+                    license_flags = (model_data or {}).get("license_flags")
+                    if license_flags is not None:
+                        response_payload["license_flags"] = int(license_flags)
+                return web.json_response(response_payload)
             return web.json_response({"success": False, "error": f"No preview URL found for the specified {self._service.model_type}"}, status=404)
         except Exception as exc:
             self._logger.error("Error getting %s preview URL: %s", self._service.model_type, exc, exc_info=True)