freat: renaming

frontend/src/app/recollections/recollectionGraphStorage.ts

@@ -0,0 +1,37 @@
+/**
+ * Per-recollection graph persistence (localStorage).
+ * Saves and loads StoredGraphState (version + nodes + edges). Used by useCanvasGraph and export.
+ */
+
+import type { StoredGraphState } from '@/lib/graph/state'
+
+export type { StoredGraphState }
+export const RECOLLECTION_FILE_EXT = '.zui.json'
+export const RECOLLECTION_VERSION = 1
+
+const GRAPH_KEY_PREFIX = 'zui_graph_'
+
+export function getGraphStorageKey(recollectionId: string): string {
+  return `${GRAPH_KEY_PREFIX}${recollectionId}`
+}
+
+export function loadGraphFromStorage(recollectionId: string): StoredGraphState | null {
+  try {
+    const raw = localStorage.getItem(getGraphStorageKey(recollectionId))
+    if (!raw) return null
+    const data = JSON.parse(raw) as unknown
+    if (!data || typeof data !== 'object' || !Array.isArray((data as StoredGraphState).nodes) || !Array.isArray((data as StoredGraphState).edges))
+      return null
+    return data as StoredGraphState
+  } catch {
+    return null
+  }
+}
+
+export function saveGraphToStorage(recollectionId: string, state: StoredGraphState): void {
+  localStorage.setItem(getGraphStorageKey(recollectionId), JSON.stringify(state))
+}
+
+export function removeGraphFromStorage(recollectionId: string): void {
+  localStorage.removeItem(getGraphStorageKey(recollectionId))
+}