fix: update persisted state workflow

tests/unit/components/panel/PreviewManager.test.ts

@@ -1,7 +1,6 @@
 import PreviewManager from "$components/panel/PreviewManager.svelte";
 import { downloadService } from "$services/downloadService";
 import { konvaStageState } from "$states/konvaStage.svelte";
-import { STATE_DATA } from "$states/persisted.svelte";
 import { textsState } from "$states/texts.svelte";
 import { render, screen, waitFor } from "@testing-library/svelte";
 import userEvent from "@testing-library/user-event";
@@ -21,7 +20,7 @@ vi.mock("./Preview.svelte", () => ({
 describe("PreviewManager Integration", () => {
   beforeEach(() => {
     vi.clearAllMocks();
-    textsState[STATE_DATA] = [];
+    textsState.fromSnapshot([]);
   });
 
   it("should show empty state by aria-label when no texts", () => {
@@ -30,7 +29,7 @@ describe("PreviewManager Integration", () => {
   });
 
   it("should toggle navigation buttons availability based on texts length", async () => {
-    textsState[STATE_DATA] = ["1", "2"];
+    textsState.fromSnapshot(["1", "2"]);
     render(PreviewManager);
 
     const nextBtn = screen.getByRole("button", { name: /next slide/i });
@@ -42,7 +41,7 @@ describe("PreviewManager Integration", () => {
 
   it("should send correct data to downloadAll service", async () => {
     const user = userEvent.setup();
-    textsState[STATE_DATA] = ["Apple", "Banana"];
+    textsState.fromSnapshot(["Apple", "Banana"]);
     render(PreviewManager);
 
     await user.click(screen.getByRole("button", { name: /download all/i }));
@@ -57,12 +56,11 @@ describe("PreviewManager Integration", () => {
 
   it("should call downloadPanel with current active text", async () => {
     const user = userEvent.setup();
-    textsState[STATE_DATA] = ["First", "Second"];
+    textsState.fromSnapshot(["First", "Second"]);
     konvaStageState.stage = { node: { id: "stage-ref" } } as unknown as Stage;
 
     render(PreviewManager);
 
-    // Переходим на второй слайд
     await user.click(screen.getByRole("button", { name: /next slide/i }));
     await user.click(screen.getByRole("button", { name: /download current/i }));
 
@@ -70,12 +68,12 @@ describe("PreviewManager Integration", () => {
   });
 
   it("should return to empty state when texts are removed", async () => {
-    textsState[STATE_DATA] = ["Temp"];
+    textsState.fromSnapshot(["Temp"]);
     render(PreviewManager);
 
     expect(screen.queryByLabelText(/Empty texts info/i)).not.toBeInTheDocument();
 
-    textsState[STATE_DATA] = [];
+    textsState.fromSnapshot([]);
 
     await waitFor(() => {
       expect(screen.getByLabelText(/Empty texts info/i)).toBeInTheDocument();
@@ -84,18 +82,15 @@ describe("PreviewManager Integration", () => {
 
   it("should automatically correct current index on items deletion", async () => {
     const user = userEvent.setup();
-    textsState[STATE_DATA] = ["1", "2", "3"];
+    textsState.fromSnapshot(["1", "2", "3"]);
     render(PreviewManager);
 
-    // Уходим на последний слайд
     await user.click(screen.getByRole("button", { name: /next slide/i }));
     await user.click(screen.getByRole("button", { name: /next slide/i }));
 
-    // Удаляем элементы. Индекс должен упасть с 2 до 0
-    textsState[STATE_DATA] = ["Only one left"];
+    textsState.fromSnapshot(["Only one left"]);
 
     await waitFor(() => {
-      // Проверяем, что кнопка "Next" заблокировалась (значит мы на последнем/единственном)
       expect(screen.getByRole("button", { name: /next slide/i })).toBeDisabled();
       expect(screen.getByRole("button", { name: /previous slide/i })).toBeDisabled();
     });