chore(docs): add mdbook mermaid build processor for diagrams support #283

	name: "[Bot] auto-assign PR author"

	on:
	pull_request:
	types: [opened]

	permissions:
	pull-requests: write

	jobs:
	auto-assign:
	# run only in 'trezor/trezor-firmware' repository
	if: github.repository == 'trezor/trezor-firmware'
	runs-on: ubuntu-latest
	steps:
	- name: Assign PR author to PR
	uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # actions/github-script@v8.0.0
	with:
	script: \|
	const author = context.payload.pull_request.user.login;

	try {
	const response = await github.rest.issues.addAssignees({
	owner: context.repo.owner,
	repo: context.repo.repo,
	issue_number: context.issue.number,
	assignees: [author]
	});
	const isAssigned = (response.data.assignees \|\| []).some(
	a => a.login === author
	);
	if (!isAssigned) {
	core.info(`Could not assign ${author} (not assignable in this repo). Skipping.`);
	}
	} catch (e) {
	core.setFailed(`Failed to assign ${author}: ${e.status ?? "unknown"} ${e.message}`);
	}

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