fix: prevent Markdown and Highlight landing link crashes

[KevinVandy]

Summary

• point the Markdown companion card at the dedicated Highlight route template
• point the Highlight companion card at the dedicated Markdown route template
• avoid generic library-route intent preloads that resolve to a different static route and lock up the page

Fixes #1200

Testing

• pnpm test
• hovered both reciprocal landing-page links and confirmed their intent preloads complete without router warnings or page freezes
• navigated from Highlight to Markdown through the companion card

Summary by CodeRabbit

• Bug Fixes
  • Updated the “Explore Markdown” and “Explore Highlight” links to open the latest version of each library.
  • Improved navigation consistency between the Highlight and Markdown landing pages.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	tanstack-com	53de61c	Commit Preview URL Branch Preview URL	Aug 31 2026, 11:56 AM

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 93a6faf8-120c-48f8-b9d6-bcae5c83d9d2

📥 Commits

Reviewing files that changed from the base of the PR and between a9c2075 and 53de61c.

📒 Files selected for processing (2)

• src/components/landing/HighlightLanding.tsx
• src/components/landing/MarkdownLanding.tsx

Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review.

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📝 Walkthrough

Walkthrough

The landing page companion links now target explicit /markdown/latest and /highlight/latest routes instead of generic library routes.

Changes

Landing page route corrections

Layer / File(s)	Summary
Explicit latest-version routes src/components/landing/HighlightLanding.tsx, src/components/landing/MarkdownLanding.tsx	The companion links now use versioned Markdown and Highlight routes with version: 'latest'.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 53de6

The PR corrects reciprocal Markdown and Highlight landing-page links so navigation and preloading use the intended dedicated routes; no actionable merge-blocking risk remains after normal checks and review.

Suggested reviewers: sukvvon, tannerlinsley

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: preventing crashes from the Markdown and Highlight landing links.
Linked Issues check	✅ Passed	The changes update both reciprocal landing links to dedicated versioned route templates. This directly addresses the hover crash and unresponsive-page behavior described in issue #1200.
Out of Scope Changes check	✅ Passed	The pull request contains only two targeted link-route changes in the Markdown and Highlight landing components. The changes are directly related to issue #1200.

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/1200-library-cross-link-prefetch

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