Skill: frontend/frontend-test-additions

Purpose

Add frontend tests that prove behavior, prevent regressions, and validate UI states. Prefer tests that are stable and aligned with repo testing conventions.

Inputs

• Target component/route/flow
• Behavior to prove (acceptance criteria)
• Existing test framework and patterns (from repo or REPO_PROFILE.json)
• Mocking strategy (MSW, fetch mocks, fixtures) if present