docs(guides): improve A2UI over MCP guide for new developers #761

	# Copyright 2026 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	name: Google open-source license

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	check-license:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v6

	- name: Set up Go
	uses: actions/setup-go@v6
	with:
	go-version: '1.21'

	- name: Install addlicense
	run: go install github.com/google/addlicense@latest

	- name: Check license headers
	run: \|
	if ! addlicense -check \
	-l apache \
	-c "Google LLC" \
	.; then
	echo "License check failed. To fix this, install addlicense and run it:"
	echo " go install github.com/google/addlicense@latest"
	echo " addlicense -l apache -c \"Google LLC\" ."
	exit 1
	fi

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