Add Toolfio footer badge

[andrewzolotukhin]

Original request

Add the Toolfio badge to the existing footer badge list with light and dark theme variants using the provided Toolfio badge snippets. Follow-up request: do not add a blog post for this change.

What changed

• Added a Toolfio badge definition and theme-aware footer badge component to the public landing page footer.
• Rendered the Toolfio light badge in light mode and the dark badge in dark mode with width="200" and height="54".
• Kept the requested dofollow rel token while preserving blank-target hardening with rel="dofollow noopener noreferrer".
• Added focused landing-page assertions for the Toolfio link, image URLs, dimensions, and theme visibility classes.
• Removed the Toolfio blog post and restored the sitemap test count so this remains a footer-badge-only change.

Reasoning

The footer already uses dedicated badge constants and small badge components, including theme-specific image pairs for EasyDoFollow and Aura++. The Toolfio addition follows that existing shape rather than adding a new abstraction. The dofollow noopener noreferrer rel value keeps the requested Toolfio token present while matching the security convention used by other external badges opened in a new tab.

Blog post

Skipped by explicit follow-up request: no blog post should be added for this change.

Screenshots / preview evidence

• Preview URL: https://xpenser-pr-068.cleverbrush.com
• Verified the updated preview footer shows Featured on Toolfio linking to https://toolfio.com/ with rel="dofollow noopener noreferrer".
• Verified light mode displays https://toolfio.com/toolfio-light-badge.png and hides the dark image.
• Verified dark mode displays https://toolfio.com/toolfio-dark-badge.png and hides the light image.
• Verified /blog no longer contains Toolfio badge for xpenser discovery or any Toolfio blog link.
• Captured local preview screenshots during the earlier badge QA:
  • /tmp/xpenser-pr68-toolfio-light.png
  • /tmp/xpenser-pr68-toolfio-dark.png

Validation

• npm run lint passed locally after removing the blog post.
• npm run typecheck passed locally after removing the blog post.
• npm test passed locally after removing the blog post: 88 files, 492 tests.
• GitHub Lint and test passed on commit f173d21.
• GitHub Deploy PR environment passed on commit f173d21.
• GitHub Playwright e2e passed on commit f173d21.
• Preview QA passed on the updated deployment for the footer badge, light/dark variants, and absent Toolfio blog post.
• SigNoz traces for service.name = 'xpenser-web-pr-68' showed recent updated-preview traffic with 200 responses and hasError: false.
• SigNoz logs for service.name = 'xpenser-web-pr-68' showed no ERROR records in the checked window.
• SigNoz service metrics showed xpenser-web-pr-68 with 4,439 calls, 0 errors, and 0% error rate in the last 30 minutes.
• Telegram PR-ready notification sent successfully for the latest no-blog-post state.