Improve type hints and docstrings #56

	name: Backend

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

	jobs:
	build_backend:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: 3.x

	- name: Install dependencies
	working-directory: ./service
	run: \|
	python -m pip install --upgrade pip
	pip install poetry
	poetry install

	- name: Run tests
	working-directory: ./service
	run: \|
	poetry run pytest --cov=./ --cov-report=xml

	- name: Check code coverage
	working-directory: ./service
	run: \|
	poetry run coverage report --fail-under=70

	- name: Start the web app
	working-directory: ./service
	run: \|
	poetry run python app.py &

	- name: Wait for the web app to start
	run: sleep 5

	- name: Perform health check
	run: \|
	response=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:5000/health)
	if [[ $response == "200" ]]; then
	echo "Health check passed"
	else
	echo "Health check failed with status code $response"
	exit 1
	fi

Provide feedback