feat(workflow): add copilot-setup-steps.yml for Coding Agent environment #1

	# Copyright (c) Microsoft Corporation.
	# SPDX-License-Identifier: MIT
	#
	# copilot-setup-steps.yml
	# Pre-install tools and dependencies for GitHub Copilot Coding Agent
	# Reference: https://docs.github.com/en/copilot/how-tos/use-copilot-agents/coding-agent/customize-the-agent-environment

	name: "Copilot Setup Steps"

	# Auto-run on push/PR to validate the setup workflow
	on:
	workflow_dispatch:
	push:
	paths:
	- .github/workflows/copilot-setup-steps.yml
	pull_request:
	paths:
	- .github/workflows/copilot-setup-steps.yml

	jobs:
	# Job MUST be named 'copilot-setup-steps' to be recognized by Copilot
	copilot-setup-steps:
	runs-on: ubuntu-latest

	# Minimal permissions; Copilot receives its own token for operations
	permissions:
	contents: read

	steps:
	- name: Checkout code
	uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v4.2.2
	with:
	persist-credentials: false

	- name: Set up Node.js
	uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v4.1.0
	with:
	node-version: "20"
	cache: "npm"

	- name: Install JavaScript dependencies
	run: npm ci

	- name: Set up Python
	uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
	with:
	python-version: "3.11"

	- name: Install PowerShell modules
	shell: pwsh
	run: \|
	Install-Module -Name PowerShell-Yaml -Force -Scope CurrentUser

	- name: Verify tool availability
	run: \|
	echo "=== Tool Versions ==="
	node --version
	npm --version
	python3 --version
	pwsh --version
	shellcheck --version
	echo ""
	echo "=== npm Scripts Available ==="
	npm run --list

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