fix: expose homepage main landmark

[tannerlinsley]

Give the homepage a main landmark so screen reader users can jump straight to its content. This handles one remaining part of #775; the other accessibility findings stay open.

AI review notes:
Replaced the existing homepage wrapper's div tag with main, preserving its classes and children. No new dependency or runtime logic.
Full pnpm test passed before committing: TypeScript and lint, 552 unit tests (4 skipped), 2269 chat tests, and 20 desktop tests (1 skipped).
A local rendered fixture with this route overlaid exposed exactly one main landmark, containing the hero heading, with no nested main and the footer outside. The surrounding fixture was older than the current full checkout.
Equivalent isolated esbuild transforms measured 5335 to 5341 gzip bytes (+6). This is an isolated module comparison, not a production bundle measurement.

Summary by CodeRabbit

• Accessibility
  • Updated the homepage’s main content area to use a semantic <main> element, with no visual or content changes.

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Latest commit: bd20ea5

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: 2da2ebfc-9d3b-4418-8296-c4626c438310

📥 Commits

Reviewing files that changed from the base of the PR and between adc601b and bd20ea5.

📒 Files selected for processing: 1

• src/routes/index.tsx

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

📝 Walkthrough

The homepage content wrapper changes from a <div> to a <main> element. Its class and contents remain unchanged.

Changes: Homepage semantics

Layer / File(s)	Summary
Update homepage wrapper src/routes/index.tsx	The homepage content wrapper changes to a <main> element. Its class and contents remain unchanged.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Bug fix

Suggested reviewers: abeuty

Merge Risk: ⚪ Minimal · up to bd20e

The homepage now exposes its content through a single main landmark, with the footer outside it. No actionable merge-blocking risk remains.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		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 1 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: exposing the homepage main landmark by changing the wrapper element.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches: 💡 1

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	tanstack-com	bd20ea5	Oct 16 2026, 11:31 PM