Merge layout compatibility fix into dnd kit

packages/validation/src/board.spec.ts

@@ -44,8 +44,16 @@ describe("section behavior validation", () => {
     });
   });
 
-  it.each(["category", "dynamic"])("rejects the legacy %s kind", (kind) => {
-    expect(() => sectionSchema.parse({ id: "legacy", kind, layouts: [] })).toThrow();
+  it("normalizes the legacy dynamic kind to a container", () => {
+    expect(sectionSchema.parse({ id: "legacy", kind: "dynamic", layouts: [] })).toMatchObject({
+      id: "legacy",
+      kind: "container",
+      layouts: [],
+    });
+  });
+
+  it("rejects the legacy category kind", () => {
+    expect(() => sectionSchema.parse({ id: "legacy", kind: "category", layouts: [] })).toThrow();
   });
 
   it.each([

packages/validation/src/shared.ts

@@ -93,4 +93,8 @@ const containerSectionSchema = z.object({
   ),
 });
 
-export const sectionSchema = z.union([emptySectionSchema, containerSectionSchema]);
+const legacyDynamicSectionSchema = containerSectionSchema
+  .extend({ kind: z.literal("dynamic") })
+  .transform((section) => ({ ...section, kind: "container" as const }));
+
+export const sectionSchema = z.union([emptySectionSchema, containerSectionSchema, legacyDynamicSectionSchema]);