feat: Add .gitignore file to exclude unnecessary files and directories #7

	name: Publish Javadoc

	on:
	push:
	branches: ['main']
	workflow_dispatch:

	permissions:
	contents: read

	concurrency:
	group: publish-javadoc
	cancel-in-progress: true

	jobs:
	publish:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	submodules: recursive
	fetch-depth: 0

	- name: Setup Java
	uses: actions/setup-java@v4
	with:
	distribution: temurin
	java-version: '17'
	cache: maven

	- name: Ensure submodule spec exists
	shell: bash
	run: \|
	set -euo pipefail
	git submodule sync --recursive
	git submodule update --init --recursive
	test -d ucp/spec \|\| (echo "Missing ucp/spec (UCP submodule not initialized?)" && ls -la && exit 1)

	- name: Build Javadoc (HTML)
	run: \|
	cd sdk
	mvn -DskipTests clean generate-sources javadoc:javadoc

	- name: Checkout site gh-pages
	uses: actions/checkout@v4
	with:
	repository: Open-Commerce-Protocol/io.deeplumen
	ref: gh-pages
	token: ${{ secrets.IO_DEEPLUMEN_PAGES_TOKEN }}
	path: io.deeplumen-pages

	- name: Sync apidocs into site
	shell: bash
	run: \|
	set -euo pipefail
	DEST="io.deeplumen-pages/ucp-sdk/apidocs"
	rm -rf "$DEST"
	mkdir -p "$DEST"
	cp -R sdk/target/site/apidocs/* "$DEST/"
	touch io.deeplumen-pages/.nojekyll

	- name: Commit and push
	shell: bash
	run: \|
	set -euo pipefail
	cd io.deeplumen-pages
	if [[ -z "$(git status --porcelain)" ]]; then
	echo "No changes to publish."
	exit 0
	fi
	git config user.name "github-actions[bot]"
	git config user.email "github-actions[bot]@users.noreply.github.com"
	git add ucp-sdk/apidocs .nojekyll
	git commit -m "docs(ucp-sdk): publish javadoc"
	git push

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