feat: Add llm-d infrastructure deployment guide and test tooling #105

	# Automated PR labeling: path-based area/* labels + size-based size/* labels.
	# Uses pull_request_target to support fork PRs (write access to base repo).

	name: PR Labeler

	on:
	pull_request_target:
	types: [opened, synchronize]

	concurrency:
	group: pr-labeler-${{ github.event.pull_request.number }}
	cancel-in-progress: true

	permissions:
	contents: read
	pull-requests: write

	jobs:
	label-pr:
	runs-on: ubuntu-latest
	steps:
	# Step 1: Path-based area/* labels
	- name: Apply area labels
	uses: actions/labeler@634933edcd8ababfe52f92936142cc22ac488b1b # v6.0.1
	with:
	repo-token: "${{ secrets.GITHUB_TOKEN }}"
	configuration-path: .github/labeler.yml
	sync-labels: true

	# Step 2: Size-based size/* labels + XL comment
	- name: Checkout scripts
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	with:
	sparse-checkout: .github/scripts
	sparse-checkout-cone-mode: false

	- name: Set up Python
	uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
	with:
	python-version: "3.12"

	- name: Install dependencies
	run: pip install PyGithub==2.9.1

	- name: Apply size labels
	id: size_labels
	continue-on-error: true
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	GITHUB_REPOSITORY: ${{ github.repository }}
	PR_NUMBER: ${{ github.event.pull_request.number }}
	run: python .github/scripts/pr_size.py

	- name: Warn if size labeling failed
	if: steps.size_labels.outcome == 'failure'
	run: \|
	echo "::warning::Size labeling failed; area labels were applied but size labels may be stale or missing."

Provide feedback