doc: comments for codebase and updated documentation

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

@@ -1,19 +1,31 @@
 <!--
     Component: FontApplicator
-
     Loads fonts from fontshare with link tag
+    - Loads font only if it's not already applied
+    - Uses IntersectionObserver to detect when font is visible
+    - Adds smooth transition when font is loaded
 -->
 <script lang="ts">
-import {
-    appliedFontsManager,
-} from '$entities/Font/model/store/appliedFontsStore/appliedFontsStore.svelte';
 import { cn } from '$shared/shadcn/utils/shadcn-utils';
 import type { Snippet } from 'svelte';
+import { appliedFontsManager } from '../../model';
 
 interface Props {
+    /**
+     * Font name to set
+     */
     name: string;
+    /**
+     * Font id to load
+     */
     id: string;
+    /**
+     * Additional classes
+     */
     className?: string;
+    /**
+     * Children
+     */
     children?: Snippet;
 }
 

src/entities/Font/ui/FontListItem/FontListItem.svelte

@@ -13,6 +13,9 @@ import {
 import FontApplicator from '../FontApplicator/FontApplicator.svelte';
 
 interface Props {
+    /**
+     * Object with information about font
+     */
     font: UnifiedFont;
 }
 

src/entities/Font/ui/FontVirtualList/FontVirtualList.svelte

@@ -1,7 +1,12 @@
+<!--
+    Component: FontVirtualList
+    - Renders a virtualized list of fonts
+    - Handles font registration with the manager
+-->
 <script lang="ts" generics="T extends { id: string }">
 import { VirtualList } from '$shared/ui';
 import type { ComponentProps } from 'svelte';
-import { appliedFontsManager } from '../../model/store/appliedFontsStore/appliedFontsStore.svelte';
+import { appliedFontsManager } from '../../model';
 
 interface Props extends Omit<ComponentProps<typeof VirtualList<T>>, 'onVisibleItemsChange'> {
     onVisibleItemsChange?: (items: T[]) => void;