ci: add backend linting workflow #1

	name: Lint Backend

	on:
	push:
	branches:
	- master
	paths:
	- "backend/**"
	pull_request:
	branches:
	- master
	paths:
	- "backend/**"

	jobs:
	lint:
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./backend

	steps:
	- name: Checkout repository
	uses: actions/checkout@v5

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.13'

	- name: Install uv
	uses: astral-sh/setup-uv@v5
	with:
	version: "0.9.18"

	- name: Cache uv dependencies
	uses: actions/cache@v4
	with:
	path: ~/.cache/uv
	key: uv-${{ runner.os }}-${{ hashFiles('backend/uv.lock') }}
	restore-keys: uv-${{ runner.os }}-

	- name: Install dependencies
	run: uv sync

	- name: Run ruff check
	run: uv run ruff check --output-format=github .

	- name: Run ruff format check
	run: uv run ruff format --check --diff .

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