feat(assets&canvas): 实现素材回收站机制、自动定时清理策略与过期时间提示，增加画布创建与变更历史时间线

web/src/stores/canvas/use-canvas-history-store.ts

@@ -0,0 +1,55 @@
+import { create } from "zustand";
+import { persist } from "zustand/middleware";
+import type { CanvasProject } from "@/stores/canvas/use-canvas-store";
+
+export type DeletedCanvasHistoryItem = {
+    id: string;
+    title: string;
+    createdAt: string;
+    updatedAt: string;
+    deletedAt: string;
+    nodeCount: number;
+    coverUrl?: string;
+};
+
+type CanvasHistoryStore = {
+    deletedProjects: DeletedCanvasHistoryItem[];
+    recordDeletedProjects: (projects: CanvasProject[]) => void;
+    removeDeletedHistoryItem: (id: string) => void;
+    clearDeletedHistory: () => void;
+};
+
+export const useCanvasHistoryStore = create<CanvasHistoryStore>()(
+    persist(
+        (set, get) => ({
+            deletedProjects: [],
+            recordDeletedProjects: (projects) => {
+                const now = new Date().toISOString();
+                const newItems: DeletedCanvasHistoryItem[] = projects.map((p) => ({
+                    id: p.id,
+                    title: p.title || "未命名画布",
+                    createdAt: p.createdAt || p.updatedAt || now,
+                    updatedAt: p.updatedAt || now,
+                    deletedAt: now,
+                    nodeCount: p.nodes?.length || 0,
+                    coverUrl: p.nodes?.find((n) => n.type === "image" && n.metadata?.content)?.metadata?.content as string | undefined,
+                }));
+                set((state) => {
+                    const existingIds = new Set(newItems.map((item) => item.id));
+                    const filtered = state.deletedProjects.filter((item) => !existingIds.has(item.id));
+                    return {
+                        deletedProjects: [...newItems, ...filtered].slice(0, 200),
+                    };
+                });
+            },
+            removeDeletedHistoryItem: (id) =>
+                set((state) => ({
+                    deletedProjects: state.deletedProjects.filter((item) => item.id !== id),
+                })),
+            clearDeletedHistory: () => set({ deletedProjects: [] }),
+        }),
+        {
+            name: "infinite-canvas:deleted_history_store",
+        },
+    ),
+);

web/src/stores/use-user-store.ts

@@ -22,6 +22,7 @@ export type RuntimeLimits = {
     activeTaskLimit: number;
     resourceUploadMB: number;
     sessionUploadMB: number;
+    recycleBinRetentionDays?: number;
 };
 
 export type FeatureAvailability = {