What problem does it solve? Frontend changes often pass code-level tests while silently breaking product intent, and reviewers lack a deterministic way to prove a delivery actually matches PRDs, prototypes, and API contracts. This Skill freezes a source-fingerprinted product contract before implementation and then independently audits the change with risk-tiered gates, producing a deterministic PASS, FAIL, or BLOCKED verdict. ## Core Features & Use Cases - Contract Preparation (prepare mode): Discovers PRDs, prototypes, API contracts, and repository rules, fingerprints every source, classifies risk (R0-R4), and freezes a human-approved delivery contract before any code changes. - Independent Verification (verify mode): Recomputes source fingerprints, maps semantic impact from the diff, runs required gates (static, unit, browser, real-backend, visual, independent review), and generates a deterministic gate report via scripts/gate.py. - Status Reporting (status mode): Summarizes existing run artifacts including source drift, gate outcomes, blockers, and resumable checkpoints without rerunning gates. - Use Case: Before merging a form-state refactor, run prepare to freeze the acceptance contract, implement the change, then run verify to get an evidence-ranked audit that blocks the merge if real-page or backend integration evidence is missing. ## Quick Start Ask the agent to use $verify-frontend-delivery in prepare mode for your repository to build a frozen frontend delivery contract before implementing the change.
