Preen Test Flakiness

Proactively reduce flaky tests by removing nondeterministic waits, stabilizing async behavior, and tightening assertions so repeated runs produce the same result.

When to Run

Run this skill when:

• Preen rotation selects preen-test-flakiness
• CI has intermittent test failures without code changes
• Suites rely on sleeps/timeouts/retries to pass
• Reviewers defer flake cleanup to a follow-up PR

Discovery Phase

Focus on deterministic anti-patterns first: