feat(lesson-preparation): major update with AI features, schedules, and new components

- Add actions-schedules.ts and data-access-schedules.ts for schedule management

- Add AI differentiation, AI feedback, consistency check dialogs

- Add attachment-picker, curriculum-heatmap, print-view, version-diff-view

- Add lesson-plan-mobile-view and schedule-dialog components

- Add lib: ai-differentiation, ai-feedback, auto-layout, consistency-check,

  curriculum-coverage, export, version-diff

- Add history-slice hook for version history

- Update existing components, hooks, providers, services, types

- Add teacher lesson-plans heatmap and library pages

src/modules/lesson-preparation/hooks/editor-slice.ts

@@ -14,6 +14,7 @@ import type {
   TextbookContentNodeData,
 } from "../types";
 import { defaultDataForType } from "../lib/document-migration";
+import { computeAutoLayout } from "../lib/auto-layout";
 import type { EditorState } from "./use-lesson-plan-editor";
 
 export interface EditorSlice {
@@ -40,6 +41,8 @@ export interface EditorSlice {
   connect: (source: string, target: string) => void;
   disconnect: (edgeId: string) => void;
   setEdges: (edges: AnyLessonPlanEdge[]) => void;
+  /** V5-8：自动布局，使用 dagre 计算并应用新位置 */
+  autoLayout: (direction?: "TB" | "LR") => void;
 }
 
 function reindex(nodes: LessonPlanNode[]): LessonPlanNode[] {
@@ -62,12 +65,16 @@ export const createEditorSlice: StateCreator<
     anchors: [],
   },
 
-  setTitle: (title) => set({ title, isDirty: true }),
+  setTitle: (title) => {
+    get().pushHistory();
+    set({ title, isDirty: true });
+  },
   setPlanId: (planId) => set({ planId }),
 
   addNode: (type, position, title) => {
     const id = createId();
     const state = get();
+    state.pushHistory(); // V5-2：撤销/重做
     const teachingNodes = state.doc.nodes.filter(
       (n): n is LessonPlanNode => n.type !== "textbook_content",
     );
@@ -91,7 +98,8 @@ export const createEditorSlice: StateCreator<
     return id;
   },
 
-  updateNode: (id, patch) =>
+  updateNode: (id, patch) => {
+    get().pushHistory(); // V5-2：撤销/重做
     set((s) => ({
       doc: {
         ...s.doc,
@@ -104,9 +112,12 @@ export const createEditorSlice: StateCreator<
         ),
       },
       isDirty: true,
-    })),
+    }));
+  },
 
-  updateNodePosition: (id, position) =>
+  updateNodePosition: (id, position) => {
+    // V5-2 注：拖拽过程中会产生大量 position 更新，仅在拖拽开始时推一次 history。
+    // 调用方应在 onDragStart 时调用 pushHistory，此处不重复推入。
     set((s) => ({
       doc: {
         ...s.doc,
@@ -119,9 +130,11 @@ export const createEditorSlice: StateCreator<
         ),
       },
       isDirty: true,
-    })),
+    }));
+  },
 
-  removeNode: (id) =>
+  removeNode: (id) => {
+    get().pushHistory(); // V5-2：撤销/重做
     set((s) => {
       const remainingTeachingNodes = reindex(
         s.doc.nodes.filter(
@@ -146,9 +159,11 @@ export const createEditorSlice: StateCreator<
         isDirty: true,
         selectedNodeId: s.selectedNodeId === id ? null : s.selectedNodeId,
       };
-    }),
+    });
+  },
 
-  updateTextbookContent: (data) =>
+  updateTextbookContent: (data) => {
+    get().pushHistory(); // V5-2：撤销/重做
     set((s) => ({
       doc: {
         ...s.doc,
@@ -159,7 +174,8 @@ export const createEditorSlice: StateCreator<
         ),
       },
       isDirty: true,
-    })),
+    }));
+  },
 
   getTextbookContentNode: () => {
     const state = get();
@@ -171,6 +187,7 @@ export const createEditorSlice: StateCreator<
   addAnchor: ({ nodeId, type, start, end, textPreview }) => {
     const anchorId = createId();
     const state = get();
+    state.pushHistory(); // V5-2：撤销/重做
     const textbookNodeId = state.doc.textbookContentNodeId;
 
     const anchor: NodeAnchor = {
@@ -202,7 +219,8 @@ export const createEditorSlice: StateCreator<
     return anchorId;
   },
 
-  removeAnchor: (anchorId) =>
+  removeAnchor: (anchorId) => {
+    get().pushHistory(); // V5-2：撤销/重做
     set((s) => ({
       doc: {
         ...s.doc,
@@ -212,9 +230,11 @@ export const createEditorSlice: StateCreator<
         ),
       },
       isDirty: true,
-    })),
+    }));
+  },
 
-  updateAnchor: (anchorId, patch) =>
+  updateAnchor: (anchorId, patch) => {
+    get().pushHistory(); // V5-2：撤销/重做
     set((s) => ({
       doc: {
         ...s.doc,
@@ -223,9 +243,11 @@ export const createEditorSlice: StateCreator<
         ),
       },
       isDirty: true,
-    })),
+    }));
+  },
 
-  connect: (source, target) =>
+  connect: (source, target) => {
+    get().pushHistory(); // V5-2：撤销/重做
     set((s) => {
       if (
         s.doc.edges.some((e) => e.source === source && e.target === target)
@@ -241,17 +263,43 @@ export const createEditorSlice: StateCreator<
         doc: { ...s.doc, edges: [...s.doc.edges, edge] },
         isDirty: true,
       };
-    }),
+    });
+  },
 
-  disconnect: (edgeId) =>
+  disconnect: (edgeId) => {
+    get().pushHistory(); // V5-2：撤销/重做
     set((s) => ({
       doc: {
         ...s.doc,
         edges: s.doc.edges.filter((e) => e.id !== edgeId),
       },
       isDirty: true,
-    })),
+    }));
+  },
 
-  setEdges: (edges) =>
-    set((s) => ({ doc: { ...s.doc, edges }, isDirty: true })),
+  setEdges: (edges) => {
+    get().pushHistory(); // V5-2：撤销/重做
+    set((s) => ({ doc: { ...s.doc, edges }, isDirty: true }));
+  },
+
+  autoLayout: (direction = "TB") => {
+    const state = get();
+    const positions = computeAutoLayout(state.doc.nodes, state.doc.edges, { direction });
+    if (positions.size === 0) return;
+    state.pushHistory(); // V5-2：撤销/重做
+    set((s) => ({
+      doc: {
+        ...s.doc,
+        nodes: s.doc.nodes.map((n) => {
+          const p = positions.get(n.id);
+          return p
+            ? n.type === "textbook_content"
+              ? ({ ...n, position: p } as TextbookContentNode)
+              : ({ ...n, position: p } as LessonPlanNode)
+            : n;
+        }),
+      },
+      isDirty: true,
+    }));
+  },
 });