first commit

frontend/types/mindmap.ts

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+import type { Edge, Node } from "reactflow";
+
+export interface MindmapNode {
+  id: string;
+  label: string;
+  parent_id: string | null;
+  level: number;
+  is_leaf: boolean;
+  children: MindmapNode[];
+}
+
+export interface Mindmap {
+  id: number;
+  unique_id: string;
+  session_id: string;
+  title: string;
+  raw_json: string;
+  tree: MindmapNode;
+  url: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface CreateMindmapPayload {
+  session_id: string;
+  mindmap_json: Record<string, unknown>;
+}
+
+export interface GraphNodeData {
+  label: string;
+  level: number;
+  isLeaf: boolean;
+  hasChildren: boolean;
+  isExpanded: boolean;
+  onToggle?: () => void;
+  onOpenChat?: () => void;
+}
+
+export interface GraphData {
+  nodes: Node<GraphNodeData>[];
+  edges: Edge[];
+}
+
+export interface ChatMessage {
+  role: "user" | "assistant";
+  content: string;
+}