feat(ci+tests): deploy safety audit — linting, rollback, smoke tests, 50+ new tests (#120)
Comprehensive deploy safety audit implementing 19 improvements across CI/CD pipeline, test coverage, and source code.
### CI/CD Pipeline
- ruff + mypy added to both release.yml and keboola-deploy.yml (continue-on-error)
- Smoke test added to keboola-deploy.yml (was missing)
- Automatic rollback on smoke test failure in release.yml
- Expanded smoke-test.sh with catalog, admin/tables, marketplace.zip, metrics
- Required status checks via .github/settings.yml
- Dependabot + CODEOWNERS + pre-commit hooks + ruff config
### Source Code
- DB schema version check in /api/health (db_schema: ok/mismatch/unhealthy)
- Config versioning (config_version: 1 in instance.yaml, non-blocking validation)
- BigQuery extractor ATTACH error handling (try/except around INSTALL+ATTACH)
- Post-deploy smoke test script for prod VM validation
### Test Coverage (~50 new tests)
- v13->v14 migration, Email magic link TTL, PAT, Marketplace ZIP/Git,
Jira webhooks, Hybrid Query BQ, Keboola/BQ extractor failure modes,
Orchestrator failure modes
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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