Add a new workflow to deploy page preview for PRs from forks #1

	name: Comment on Fork PRs

	on:
	pull_request:
	types: [opened, reopened, synchronize]

	jobs:
	comment-on-fork-pr:
	runs-on: ubuntu-latest
	# Only run for fork PRs
	if: github.event.pull_request.head.repo.fork == true
	steps:
	- name: Comment on PR with manual deployment instructions
	uses: actions/github-script@v7
	with:
	script: \|
	const prNumber = context.payload.pull_request.number;
	const workflowUrl = `https://github.com/ruby/rdoc/actions/workflows/cloudflare-preview.yml`;
	const branch = context.payload.pull_request.head.ref;

	// Create a direct link that pre-fills the PR number input
	const dispatchUrl = `${workflowUrl}/dispatch?ref=main&inputs%5Bpull_request_number%5D=${prNumber}`;

	await github.rest.issues.createComment({
	issue_number: prNumber,
	owner: context.repo.owner,
	repo: context.repo.repo,
	body: `## Cloudflare Preview Deployment

	⚠️ This PR is from a fork, so the preview deployment workflow doesn't run automatically for security reasons.

	If you're a maintainer and want to preview this PR:

	[➡️ Click here to run the workflow with PR #${prNumber} pre-filled](${dispatchUrl})

	This will trigger a Cloudflare Pages preview deployment for this PR.`
	});

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