refactoring: graph state

frontend/src/app/pleroma/projectGraphStorage.ts

@@ -1,8 +1,11 @@
 /**
  * Per-project graph persistence (localStorage).
- * Used by CanvasPage to load/save and by ProjectsTablePage for export.
+ * Saves and loads StoredGraphState (version + nodes + edges). Used by useCanvasGraph and export.
  */
 
+import type { StoredGraphState } from '@/lib/graph/state'
+
+export type { StoredGraphState }
 export const PROJECT_FILE_EXT = '.zui.json'
 export const PROJECT_VERSION = 1
 
@@ -12,22 +15,20 @@ export function getGraphStorageKey(projectId: string): string {
   return `${GRAPH_KEY_PREFIX}${projectId}`
 }
 
-export type GraphState = { version: number; nodes: unknown[]; edges: unknown[] }
-
-export function loadGraphFromStorage(projectId: string): GraphState | null {
+export function loadGraphFromStorage(projectId: string): StoredGraphState | null {
   try {
     const raw = localStorage.getItem(getGraphStorageKey(projectId))
     if (!raw) return null
     const data = JSON.parse(raw) as unknown
-    if (!data || typeof data !== 'object' || !Array.isArray((data as GraphState).nodes) || !Array.isArray((data as GraphState).edges))
+    if (!data || typeof data !== 'object' || !Array.isArray((data as StoredGraphState).nodes) || !Array.isArray((data as StoredGraphState).edges))
       return null
-    return data as GraphState
+    return data as StoredGraphState
   } catch {
     return null
   }
 }
 
-export function saveGraphToStorage(projectId: string, state: GraphState): void {
+export function saveGraphToStorage(projectId: string, state: StoredGraphState): void {
   localStorage.setItem(getGraphStorageKey(projectId), JSON.stringify(state))
 }