feat: migrate to pnpm, add Turnstile anti-spam, fix performance issues

- Migrate from npm to pnpm for better performance and dependency management
- Add Cloudflare Turnstile to contact form for anti-spam protection
- Add email icon to social links section
- Fix ScrollTrigger "Element not found: body" error
- Reduce will-change memory consumption warnings
- Fix font preload warnings with proper configuration
- Update GitHub Actions workflow to support pnpm
- Update Dockerfile to use pnpm and Node 22
- Fix ESLint warnings across multiple components
- Update metadata to reflect Rust & Web Developer focus

Author: Amitminer

.github/workflows/nextjs.yml

@@ -43,6 +43,11 @@ jobs:
             echo "Unable to determine package manager"
             exit 1
           fi
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: latest
+        if: steps.detect-package-manager.outputs.manager == 'pnpm'
       - name: Setup Node
         uses: actions/setup-node@v4
         with: