feat(ui): improve lesson cards and theme button, optimize dependency checks

UI Improvements:
- Highlight classroom number in lesson cards using Badge component
  * Applied to both mobile and desktop views
  * Improved visual distinction for classroom information

- Fix theme switcher button layout on mobile
  * Add "Тема" text label inside the button (visible on all devices)
  * Remove redundant absolute positioned span below button
  * Fix text overflow issues on mobile devices
  * Improve button isolation to prevent text escaping

Performance Optimization:
- Optimize dependency installation check in deployment scripts
  * Replace timestamp-based check with content hash comparison
  * Use MD5 hash of package.json and lock files to detect real changes
  * Save hash after successful installation for future comparisons
  * Significantly reduce unnecessary npm install runs during updates
  * Add .dependencies.hash to .gitignore

Files changed:
- src/widgets/schedule/lesson.tsx - Added Badge for classroom
- src/features/theme-switch/index.tsx - Added text label to button
- src/widgets/navbar/index.tsx - Improved button container structure
- src/pages/index.tsx - Removed redundant theme label span
- scripts/manage.sh - Optimized dependency check logic
- scripts/install.sh - Optimized dependency check logic
- .gitignore - Added .dependencies.hash exclusion

src/widgets/navbar/index.tsx

@@ -55,10 +55,11 @@ export function NavBar({ cacheAvailableFor, groups }: {
               </li>
             </ul>
           </div>
-          <div className='flex gap-1 min-[500px]:gap-2 flex-shrink-0'>
-            <Link href={GITHUB_REPO_URL} target='_blank' rel='nofollower noreferrer'>
-              <Button variant='outline' size='icon' className="min-w-[44px] min-h-[44px] md:min-w-0 md:min-h-0" tabIndex={-1}>
+          <div className='flex gap-1 min-[500px]:gap-2 flex-shrink-0 items-center flex-nowrap'>
+            <Link href={GITHUB_REPO_URL} target='_blank' rel='nofollower noreferrer' className="flex-shrink-0">
+              <Button variant='outline' size='icon' className="min-w-[44px] min-h-[44px] md:min-w-0 md:min-h-0 flex-shrink-0" tabIndex={-1}>
                 <FaGithub />
+                <span className="sr-only">GitHub</span>
               </Button>
             </Link>
             <ThemeSwitcher />

src/widgets/schedule/lesson.tsx

@@ -126,7 +126,10 @@ export function Lesson({ lesson, width = 350, animationDelay }: {
         {!isCancelled && ('place' in lesson && lesson.place) && (
           <div className='flex flex-col text-muted-foreground text-xs break-words mt-3 md:hidden'>
             <span className='flex items-center gap-2'><BsFillGeoAltFill /> <span className="break-words">{lesson.place.address}</span></span>
-            <span className='font-bold flex items-center gap-2'><RiGroup2Fill /> {lesson.place.classroom}</span>
+            <span className='flex items-center gap-2 mt-1'>
+              <RiGroup2Fill />
+              <Badge variant="outline" className="font-bold text-xs">{lesson.place.classroom}</Badge>
+            </span>
           </div>
         )}
       </CardContent>
@@ -135,7 +138,10 @@ export function Lesson({ lesson, width = 350, animationDelay }: {
           {('place' in lesson && lesson.place) ? (
             <div className='hidden md:flex flex-col text-muted-foreground text-xs break-words'>
               <span className='flex items-center gap-2'><BsFillGeoAltFill /> <span className="break-words">{lesson.place.address}</span></span>
-              <span className='font-bold flex items-center gap-2'><RiGroup2Fill /> {lesson.place.classroom}</span>
+              <span className='flex items-center gap-2 mt-1'>
+                <RiGroup2Fill />
+                <Badge variant="outline" className="font-bold text-xs">{lesson.place.classroom}</Badge>
+              </span>
             </div>
           ) : <span />}
           {Boolean(lesson.resources.length) && (