Negotiate text/markdown content type on homepage

[mattt]

No description provided.

[Copilot]

Pull request overview

Enables the Worker to handle / before static assets so the homepage can negotiate and return Markdown (llms.txt) when the client requests text/markdown via the Accept header.

Changes:

• Configure Wrangler assets to run the Worker first for /.
• Add a / route that serves public/llms.txt as text/markdown when requested; otherwise falls back to the static asset response.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
wrangler.jsonc	Routes / through the Worker first so content negotiation can occur before asset serving.
src/index.ts	Implements Accept: text/markdown negotiation on / by returning llms.txt as Markdown.

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