build(site): upgrade Astro to v7

[netlify-coding]

🔗 View agent run: https://app.netlify.com/projects/cli/agent-runs/6a843edee2665aa59b485ac2

🤖 Agent: Opencode (deepseek/deepseek-v4-pro)

💬 Prompt: Upgrade my Astro project to v7. Follow the migration guide at
https://docs.astro.build/en/guides/upgrade-to/v7/

✅ Result:

Summary

Upgraded the Astro project from v6 to v7 following the official migration guide.

What changed

• astro upgraded from 6.4.6 to 7.2.2
• @astrojs/starlight upgraded from 0.39.3 to 0.41.7 (0.40+ dropped support for Astro 6; 0.41+ requires Astro 7)
• @astrojs/markdown-remark added as an explicit dependency at 7.2.2 — required as a peer dependency by both Astro 7 and Starlight 0.41+ for the remark/rehype Markdown pipeline

What was verified (no changes needed)

• No src/fetch.ts file exists, so no conflict with the new reserved filename
• No experimental flags were in use that needed migration to stable
• No deprecated astro:transitions internals (createAnimationScope, TRANSITION_*) were referenced
• No getContainerRenderer() imports from integration roots
• No @astrojs/db usage
• @astrojs/sitemap remained at 3.7.3 (already latest, sourced as a transitive dependency of Starlight)

Build perf changes

Five cold builds (clearing dist/ between each) and five warm builds (no clearing) were run for both Astro v6.4.6 and Astro v7.2.2 on the same machine with identical source content.

Scenario	Astro v6	Astro v7	Improvement
Cold build (mean)	3385ms	2325ms	-31.3% (-1061ms)
Warm build (mean)	3315ms	2347ms	-29.2% (-968ms)

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: e155bc41-773f-48c9-b7af-aea4233ecdcd

📥 Commits

Reviewing files that changed from the base of the PR and between 68938dd and 1aae2f9.

⛔ Files ignored due to path filters (1)

• site/package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (1)

• site/package.json

🔗 Linked repositories identified

CodeRabbit considers these linked repositories for cross-repo context during reviews:

• netlify/blueprints (manual)

Included review availability: 5 reviews are currently available. Based on recent review activity, included reviews refill at 6 per hour.

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Updated site framework dependencies.
  • Added improved Markdown processing support.
  • Upgraded the documentation site platform and Astro.

Walkthrough

The site package manifest adds @astrojs/markdown-remark. It upgrades @astrojs/starlight from 0.39.3 to 0.41.7 and astro from 6.4.6 to 7.2.2.

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

Merge Risk: ⚪ Minimal · up to 1aae2

This PR upgrades Astro and related Markdown dependencies without any identified merge-blocking risk; it is merge-ready after normal checks and review.

Suggested reviewers: serhalp

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly and concisely describes the Astro v7 upgrade, which is the main change in the pull request.
Description check	✅ Passed	The description directly explains the Astro and Starlight upgrades, added dependency, migration checks, and build results.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch agent-version-7-following-migration-guide-5ac2

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_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

📊 Benchmark results

Comparing with 68938dd

• Dependency count: 1,155 (no change)
• Package size: 448 MB ⬇️ 0.00% decrease vs. 68938dd
• Number of ts-expect-error directives: 346 (no change)

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commit: 1aae2f9