Provides concrete code-level fixes for each of the eight recurring flake patterns in flake-pattern-reference: replacing fixed sleeps with framework auto-waits, isolating state in beforeEach fixtures, stable role-based locators, mocking network + clock, seeding RNG, closing leaked resources, and the per-worker DB-schema fix for shared parallel state. Use when a flake is already classified by pattern and you need the specific code change to apply; to classify the pattern first use flake-pattern-reference or flake-axis-bisection, and to quarantine the test while the fix is in review use flaky-test-quarantine.