refactor(font): move test fixtures into a dedicated testing segment

Mock data lived in lib/ and was re-exported through the slice's
production index.ts, advertising fixtures as part of the public API.
Move it to a testing/ segment and drop it from index.ts; consumers now
import explicitly via the $entities/Font/testing subpath.

Repoints the four mock consumers (FontApplicator story, sizeResolver
and fontCatalogStore specs, comparisonStore test) to the new subpath.

src/entities/Font/index.ts

@@ -3,3 +3,6 @@ export * from './domain';
 export * from './lib';
 export * from './model';
 export * from './ui';
+
+// `./testing` is intentionally not re-exported: fixtures must not leak into the
+// production public API. Import them via `$entities/Font/testing`.

src/entities/Font/lib/index.ts

@@ -1,49 +1,5 @@
 export { getFontUrl } from './getFontUrl/getFontUrl';
 
-// Mock data helpers for Storybook and testing
-export {
-    createCategoriesFilter,
-    createErrorState,
-    createGenericFilter,
-    createLoadingState,
-    createMockComparisonStore,
-    // Filter mocks
-    createMockFilter,
-    createMockFontApiResponse,
-    createMockFontStoreState,
-    // Store mocks
-    createMockQueryState,
-    createMockReactiveState,
-    createMockStore,
-    createProvidersFilter,
-    createSubsetsFilter,
-    createSuccessState,
-    generateMixedCategoryFonts,
-    generateMockFonts,
-    generatePaginatedFonts,
-    generateSequentialFilter,
-    GENERIC_FILTERS,
-    getAllMockFonts,
-    getFontsByCategory,
-    getFontsByProvider,
-    MOCK_FILTERS,
-    MOCK_FILTERS_ALL_SELECTED,
-    MOCK_FILTERS_EMPTY,
-    MOCK_FILTERS_SELECTED,
-    MOCK_FONT_STORE_STATES,
-    MOCK_STORES,
-    type MockFilterOptions,
-    type MockFilters,
-    type MockFontStoreState,
-    // Font mocks
-    // Types
-    type MockQueryObserverResult,
-    type MockQueryState,
-    mockUnifiedFont,
-    type MockUnifiedFontOptions,
-    UNIFIED_FONTS,
-} from './mocks';
-
 export {
     FontNetworkError,
     FontResponseError,

src/entities/Font/lib/sizeResolver/createFontRowSizeResolver.test.ts

@@ -14,6 +14,7 @@ vi.mock('@chenglou/pretext', async () => {
         layout: vi.fn(actual.layout),
     };
 });
+import { mockUnifiedFont } from '$entities/Font/testing';
 import {
     beforeEach,
     describe,
@@ -22,7 +23,6 @@ import {
     vi,
 } from 'vitest';
 import type { FontLoadStatus } from '../../model/types';
-import { mockUnifiedFont } from '../mocks';
 import { createFontRowSizeResolver } from './createFontRowSizeResolver';
 
 // Fixed-width canvas mock: every character is 10px wide regardless of font.

src/entities/Font/model/store/fontCatalogStore/fontCatalogStore.svelte.spec.ts

@@ -1,3 +1,7 @@
+import {
+    generateMixedCategoryFonts,
+    generateMockFonts,
+} from '$entities/Font/testing';
 import { QueryClient } from '@tanstack/query-core';
 import { flushSync } from 'svelte';
 import {
@@ -12,10 +16,6 @@ import {
     FontNetworkError,
     FontResponseError,
 } from '../../../lib/errors/errors';
-import {
-    generateMixedCategoryFonts,
-    generateMockFonts,
-} from '../../../lib/mocks/fonts.mock';
 import type { UnifiedFont } from '../../types';
 import { FontCatalogStore } from './fontCatalogStore.svelte';
 

src/entities/Font/testing/fonts.mock.ts

@@ -16,7 +16,7 @@
  *     GOOGLE_FONTS,
  *     FONTHARE_FONTS,
  *     UNIFIED_FONTS,
- * } from '$entities/Font/lib/mocks';
+ * } from '$entities/Font/testing';
  *
  * // Create a mock Google Font
  * const roboto = mockGoogleFont({ family: 'Roboto', category: 'sans-serif' });
@@ -28,7 +28,7 @@
  * const font = mockUnifiedFont({ id: 'roboto', name: 'Roboto' });
  *
  * // Use preset fonts
- * import { UNIFIED_FONTS } from '$entities/Font/lib/mocks';
+ * import { UNIFIED_FONTS } from '$entities/Font/testing';
  * ```
  */
 

src/entities/Font/testing/index.ts

@@ -13,7 +13,7 @@
  *     UNIFIED_FONTS,
  *     MOCK_FILTERS,
  *     createMockFontStoreState,
- * } from '$entities/Font/lib/mocks';
+ * } from '$entities/Font/testing';
  *
  * // Use in stories
  * const font = mockUnifiedFont({ name: 'My Font', category: 'serif' });

src/entities/Font/testing/stores.mock.ts

@@ -8,7 +8,7 @@
  * import {
  *     createMockQueryState,
  *     MOCK_STORES,
- * } from '$entities/Font/lib/mocks';
+ * } from '$entities/Font/testing';
  *
  * // Create a mock query state
  * const loadingState = createMockQueryState({ status: 'pending' });

src/entities/Font/ui/FontApplicator/FontApplicator.stories.svelte

@@ -23,7 +23,7 @@ const { Story } = defineMeta({
 </script>
 
 <script lang="ts">
-import { mockUnifiedFont } from '$entities/Font/lib/mocks';
+import { mockUnifiedFont } from '$entities/Font/testing';
 import type { ComponentProps } from 'svelte';
 
 const fontUnknown = mockUnifiedFont({ id: 'nonexistent-font-xk92z', name: 'Nonexistent Font Xk92z' });