Cleanup Old Code (#88)

* Cleanup: Remove old code replaced by repository pattern

Removed:
- context/SearchProvider.tsx (replaced by ToolsProvider)
- components/tools/queries/ (React Query hooks no longer needed)
- components/tools/listPage/ListPageComponent/ (replaced by StaticListPageComponent)
- components/homepage/queries/ (homepage uses repository pattern)
- components/blog/queries/ (blog uses direct file access)
- components/tools/listPage/ToolsSidebar/FilterCard/utils.ts (inlined in components)

API Routes Removed:
- pages/api/tools.ts
- pages/api/paginated-tools.ts
- pages/api/tags/[type].ts
- pages/api/tool/[toolId].ts
- pages/api/mostViewed.ts
- pages/api/popularLanguages.ts

Utils-api Removed:
- cache.ts (no longer using file cache)
- filters.ts (filtering in ToolsFilter class)
- tools.ts (replaced by ToolsRepository)
- toolsWithVotes.ts (replaced by ToolsRepository.withVotes)
- tags.ts (replaced by TagsRepository)
- mostViewedTools.ts (replaced by StatsRepository)
- popularLanguageStats.ts (replaced by StatsRepository)
- toolStats.ts (replaced by StatsRepository)
- stars.ts (not used)
- github.ts (not used)
- urls.ts (not used)

Updated:
- blog.ts: Removed cache dependency, use direct file access
- screenshot.ts: Removed cache dependency, use in-memory cache
- query.ts: Removed SearchProvider types, proper TypeScript
- pages/languages/index.tsx: Use StatsRepository
- pages/tag/[slug].tsx: Remove SearchProvider wrapper
- pages/tool/[slug].tsx: Remove SearchProvider wrapper

* Refactor AffiliateCard links to use Link component directly

Author: mre

components/affiliates/AffiliateCard/AffiliateCard.tsx

@@ -27,16 +27,14 @@ const AffiliateCard: FC<AffiliateCardProps> = ({ affiliate }) => {
                     />
                 </div>
                 <div>
-                    <Link href={affiliate.href}>
-                        <a
-                            className={styles.affiliateLink}
-                            href={affiliate.href}
-                            target="_blank"
-                            rel="noreferrer">
-                            <Heading level={3} className={styles.affiliateName}>
-                                {affiliate.headline}
-                            </Heading>
-                        </a>
+                    <Link
+                        href={affiliate.href}
+                        className={styles.affiliateLink}
+                        target="_blank"
+                        rel="noreferrer">
+                        <Heading level={3} className={styles.affiliateName}>
+                            {affiliate.headline}
+                        </Heading>
                     </Link>
 
                     <ReactMarkdown className={styles.description}>
@@ -45,9 +43,9 @@ const AffiliateCard: FC<AffiliateCardProps> = ({ affiliate }) => {
 
                     <div className={styles.cta}>
                         <Link
-                            passHref
                             href={affiliate.href}
                             target="_blank"
+                            rel="noreferrer"
                             className={styles.affiliateLink}>
                             <Button className={styles.button} theme="primary">
                                 {affiliate.callToAction}