What problem does it solve? Individual feature tests can pass while the integrated product still fails real user journeys. This Skill validates the whole product against all requirements and acceptance criteria in a confirmed safe live environment before any pull request is created. ## Core Features & Use Cases - Whole-Product UAT Matrix: Builds a UAT matrix from all requirements and acceptance criteria, covering cross-feature user journeys and negative criteria. - Harness-Aware GUI Testing: Routes GUI journeys through the exact declared harness (computer-use, browser, or Playwright) with fresh accessibility state per action and an ordered action ledger. - Independent Evidence Oracles: Requires API, database, or service oracles for data-backed GUI flows, and writes a structured UAT report to evidence/uat/uat-report.md. - Use Case: After all feature commits are complete in an Agentic SDLC run, the coordinator invokes this Skill to execute end-to-end acceptance testing, classify failures (EVALUATION_DEFECT, DESIGN_DEFECT, SPEC_GAP, ENVIRONMENT_DEFECT), and gate PR creation on a passing result. ## Quick Start Ask the Agentic SDLC coordinator to run UAT validation on the current branch after all feature commits are complete, using the confirmed live experiment environment defined in docs/requirements.md.