CI¶

The harness separates confidence from cost.

Pull request gate¶

.github/workflows/pr-gate.yml runs locked installation, Ruff, non-integration smoke tests, and a PostgreSQL smoke round trip.

Backend matrix¶

.github/workflows/matrix.yml runs on schedule or manual dispatch. Its matrix selects one backend per job and passes the backend selection into pytest. This prevents a MySQL job from silently running ClickHouse or PostgreSQL work.

PostgreSQL and ClickHouse cells are strict. MySQL and MariaDB experimental cells are allowed to expose known PyPI 0.16.5 failures, while preserving their logs and artifacts.

Plugin workflow¶

.github/workflows/plugins.yml installs and exercises the public plugin path.

Distribution workflow¶

.github/workflows/distribution.yml runs package inspection and CLI contract tests in a clean locked environment.

Performance workflow¶

.github/workflows/performance.yml runs opt in scale and 500 migration suites. It stores benchmark JSON as an artifact.

Local reproduction¶

Use the exact command shown in the failed workflow step, then set DBWARDEN_HARNESS_ARTIFACT_DIR=artifacts to retain local evidence.