I can drag and drop items into the canvas

I

src/components/workflows/db_management.py

@@ -6,11 +6,32 @@ from core.settings_management import SettingsManager
 
 logger = logging.getLogger("WorkflowsSettings")
 
+# Data structures
+@dataclass
+class WorkflowComponent:
+  id: str
+  type: str
+  x: int
+  y: int
+  title: str
+  description: str
+
+
+@dataclass
+class Connection:
+  id: str
+  from_id: str
+  to_id: str
+
 @dataclass
 class WorkflowsDesignerSettings:
   workflow_name: str
 
-
+@dataclass
+class WorkflowsDesignerState:
+  components: dict[str, WorkflowComponent] = field(default_factory=dict)
+  connections: list[Connection] = field(default_factory=list)
+  component_counter = 0
 
 @dataclass
 class WorkflowsSettings: