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;
 }