name: Tier 0 — Unit (Linux)

on:
  push:
    branches: [main]
  pull_request:

# Minimal-deps run: Tier 0 must work without ComfyUI, coremltools, or
# python_coreml_stable_diffusion (Linux CI image won't have them). The
# in-tree purity gate (tests/unit/test_tier0_purity.py) double-checks
# that the suite hasn't started leaking framework imports.
jobs:
  unit:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: "3.11"

      - name: Install Tier 0 deps
        run: |
          python -m pip install --upgrade pip
          # Tier 0 only needs torch + numpy + pytest; everything else
          # is Mac-only.
          python -m pip install \
            "torch==2.0.1" "numpy<1.25" \
            "pytest>=8" "pytest-xdist"

      - name: Run Tier 0
        run: pytest -m unit tests/ -v