Add ordinal + calibration metrics, CV reporting, and CI-built model artifact #3

	name: CI

	on:
	push:
	branches: [main]
	pull_request:

	jobs:
	quality-gate:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.10", "3.12"]

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: pip

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt

	- name: Ruff (lint)
	run: ruff check --output-format=github .

	- name: Black (format check)
	run: black --check .

	- name: Mypy (type check)
	run: mypy src app.py

	- name: Pytest
	run: pytest

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