[init]: 初始化项目结构 #1

	name: Python Code Linting (Safe Optimized)

	on:
	# 触发条件 1: 所有分支的 push 事件
	push:
	branches-ignore: []

	# 触发条件 2: 针对 dev 分支的 pull_request 事件
	pull_request:
	branches: [ "dev" ]

	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code (with full history)
	uses: actions/checkout@v4
	with:
	fetch-depth: 2 # 必须获取前一次提交，才能比较变更

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.10"

	- name: Install flake8
	run: pip install flake8

	- name: Get valid changed Python files
	id: changed-files
	run: \|
	# 获取变更的.py文件列表，并过滤出实际存在的文件
	FILES=$(git diff --name-only --diff-filter=d HEAD^ HEAD \| grep '\.py$' \| while read -r file; do
	[ -f "$file" ] && echo "$file"
	done)

	echo "Valid changed Python files:"
	echo "$FILES"
	echo "files=${FILES}" >> $GITHUB_OUTPUT

	- name: Run flake8 on changed files
	if: steps.changed-files.outputs.files != ''
	run: \|

	echo "${{ steps.changed-files.outputs.files }}" \| xargs -r flake8

	- name: Skip if no valid Python files changed
	if: steps.changed-files.outputs.files == ''
	run: echo "✅ 没有有效的.py文件变更，跳过检查"

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