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Phase III U2 Safety Envelope & Type-Verified Runner Surface #34

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100 changes: 100 additions & 0 deletions .github/workflows/u2-safety-gate.yml
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Original file line number Diff line number Diff line change
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name: U2 Safety Gate

on:
pull_request:
paths:
- 'experiments/u2/**'
- 'tests/test_u2*.py'
- 'pyproject.toml'
push:
branches:
- main
- 'copilot/**'

jobs:
type-check:
name: Type Safety Check
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4

- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: '3.11'

- name: Install dependencies
run: |
pip install mypy pytest pyyaml pydantic typing-extensions

- name: Run mypy on U2 modules
run: |
mypy experiments/u2/ --config-file pyproject.toml

- name: Fail if mypy errors
if: failure()
run: |
echo "::error::Type checking failed for U2 modules"
exit 1

safety-tests:
name: Safety & Performance Tests
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4

- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: '3.11'

- name: Install dependencies
run: |
pip install pytest pyyaml pydantic typing-extensions

- name: Run U2 tests
run: |
pytest tests/test_u2*.py -v

- name: Check test results
if: failure()
run: |
echo "::error::U2 tests failed"
exit 1

- name: Run performance guardrail tests
run: |
pytest tests/test_u2_perf_guardrails.py -v

- name: Check safety envelope smoke test
run: |
python3 -c "
from experiments.u2.entrypoint import run_u2_experiment
from experiments.u2.runner import U2Config
from experiments.u2.safety_envelope import evaluate_safety_status

# Quick smoke test
config = U2Config(
experiment_id='ci_smoke',
slice_name='test',
mode='baseline',
total_cycles=5,
master_seed=42
)

def mock_exec(item, seed):
return True, {'ok': True}

results, envelope = run_u2_experiment(
config=config,
items=['a', 'b', 'c'],
execute_fn=mock_exec
)

if not evaluate_safety_status(envelope):
raise RuntimeError(f'Safety envelope BLOCKED: {envelope.warnings}')

print(f'✓ Safety status: {envelope.safety_status}')
print(f'✓ Completed {len(results)} cycles')
print(f'✓ Performance OK: {envelope.perf_ok}')
"
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