chore(deps): bump fumadocs-core and fumadocs-ui to 16.15.9

[clay-good]

Status: LGTM, ready for review. Supersedes Dependabot #1825.

What was wrong
#1825 bumps fumadocs-core and fumadocs-ui from 16.15.5 to 16.15.9, but its Cloudflare Pages build fails. In fumadocs 16.15.9, llms(source).index() returns a Promise<string> (that release added async renderPage support to llms()), so website/app/llms.txt/route.ts stopped type-checking:

app/llms.txt/route.ts(7,23): error TS2345: Argument of type 'Promise<string>' is not assignable to parameter of type 'BodyInit | null | undefined'.

The fix can't be pushed to the Dependabot branch: a manual push makes Dependabot stop maintaining the PR.

What this does

• Makes the same two version bumps, on current main. The lockfile was regenerated with the repo's pnpm 10.34.5 and resolves to 16.15.11, the latest in range. Transitive changes come from fumadocs itself: cnfast is replaced by cn, and lucide-react 1.47.0 is added as a fumadocs-ui dependency. The top-level lucide-react stays at 1.34.0.
• llms.txt route: GET is now async and awaits index().

Proof it works

• Reproduced the failure by running pnpm run build on chore(deps): bump the website-dependencies group across 1 directory with 2 updates #1825's head (1f3fe7c): it exits 1 with the error above.
• On this branch, in website/: pnpm install --frozen-lockfile ✅, pnpm run build ✅, pnpm run types:check ✅.
• The generated out/llms.txt still lists the docs index (# Documentation, [Installation](/docs/installation)…).

Notes / nits

• Once this merges, close chore(deps): bump the website-dependencies group across 1 directory with 2 updates #1825.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes

  • Improved reliability when retrieving the site’s AI-readable documentation index.

• Improvements

  • Updated documentation site components to incorporate the latest maintenance and compatibility improvements.

[cloudflare-workers-and-pages]

Deploying openspec-docs with    Cloudflare Pages

Latest commit:	b4bec44
Status:	✅  Deploy successful!
Preview URL:	https://17c7cedd.openspec-docs.pages.dev
Branch Preview URL:	https://chore-website-fumadocs-16-15.openspec-docs.pages.dev

View logs

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Advanced

Run ID: c1975a98-a05b-4f20-af16-07451dcf85fe

📥 Commits

Reviewing files that changed from the base of the PR and between bae58cf and b4bec44.

⛔ Files ignored due to path filters (1)

• website/pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (2)

• website/app/llms.txt/route.ts
• website/package.json

Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review.

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📝 Walkthrough

Walkthrough

Changes

Website LLM route update

Layer / File(s)	Summary
Fumadocs dependency update website/package.json	Updates fumadocs-core and fumadocs-ui from ^16.15.5 to ^16.15.9.
Async LLM route handling website/app/llms.txt/route.ts	Makes GET asynchronous and awaits llms(source).index() before returning a Response.

Priority: ⬇️ Low

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

Change: Other

Merge Risk: ⚪ Minimal · up to b4bec

The documentation route remains compatible with the upgraded Fumadocs packages and has no identified user-impacting regression.

🚥 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 1 functions across 1 files. (1 skipped: 1 …	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 identifies the primary change: upgrading fumadocs-core and fumadocs-ui to version 16.15.9. It is concise and related to the pull request objectives.
Linked Issues check	✅ Passed	The pull request satisfies the coding requirements in [#1825]. website/package.json upgrades fumadocs-core and fumadocs-ui from ^16.15.5 to ^16.15.9. The llms.txt route awaits the promise …
Out of Scope Changes check	✅ Passed	The changes stay within [#1825]. The dependency changes implement the requested Fumadocs upgrade. The asynchronous llms.txt route change adapts website code to the upgraded API. No unrelated source …

Full details: Docstring Coverage

Explanation

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. (1 skipped: 1 unsupported.)

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Commit to this branch
• Create a new PR

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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[openspec-cloud]

No PR-relevant drift confirmed.

AI-generated · A citation proves the line exists, not that it makes the case — verify before acting.
Checked the 0 requirements selected for this PR at b4bec44 (255 total).
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