What problem does it solve? After running an area's test suite, teams face a report full of failed and flaky tests that each need diagnosis and manual fixing. This Skill reads the test check report and systematically implements the recommended fix for each failure, applying test code fixes for test faults and production code fixes for production faults. ## Core Features & Use Cases - Report-driven fixing: Parses the test check report generated by the test runner skill and processes every classified test fault and production fault. - Layer-correct fixes: Fixes test faults in test code (selectors, timing, assertions, setup) and production faults in production code, validated against user story acceptance criteria via the DefProd MCP server. - Verification loop: Runs each fixed test individually, re-runs the full area suite to catch regressions, and performs a final compilation check before reporting results. - Use Case: After /defprod-run-area-tests flags 8 failures in the BILLING area, invoke this Skill to fix each one, re-run the suite, and append a "Fixes Applied" section to the report. ## Quick Start Ask the agent to fix the test failures for the BILLING area using the existing test check report.