Add visual workflow builder, fix critical bugs, and add Arabic i18n support

src/js/workflow/nodes/base-node.ts

@@ -0,0 +1,30 @@
+import { ClassicPreset } from 'rete';
+import type { NodeCategory, NodeMeta, SocketData } from '../types';
+
+export abstract class BaseWorkflowNode extends ClassicPreset.Node {
+  abstract readonly category: NodeCategory;
+  abstract readonly icon: string;
+  abstract readonly description: string;
+
+  width = 280;
+  height = 140;
+  execStatus: 'idle' | 'running' | 'completed' | 'error' = 'idle';
+
+  constructor(label: string) {
+    super(label);
+  }
+
+  abstract data(
+    inputs: Record<string, SocketData[]>
+  ): Promise<Record<string, SocketData>>;
+
+  getMeta(): NodeMeta {
+    return {
+      id: this.id,
+      label: this.label,
+      category: this.category,
+      icon: this.icon,
+      description: this.description,
+    };
+  }
+}