CCA-F Exam Trainer: Bilingual Certification Practice

CCA-F Exam Trainer is a fully client-side single-page app (Vite, React 19, TypeScript, Tailwind CSS v4) with no backend, no database, and no accounts: every in-progress exam, results history, and preference lives only in the browser’s localStorage. The exam runner assembles a timed mock weighted across the five official domains, with a flag-and-navigator grid, a 120-minute countdown, and auto-submit at zero. Each sitting is graded on a documented linear approximation of the scaled 100-1000 score (pass at 720), with a per-domain accuracy breakdown and a full answer review that shows your answer, the correct one, why it is best, and why each distractor falls short. A Zustand store persists session state, so an in-progress mock survives a refresh or a slept laptop, recent attempts build a score history, and you can re-quiz only the questions you missed or drill a single weak domain untimed. The English and French toggle is total: one click swaps every label and every piece of content, including stems, options, explanations, and the study-mode course bodies. All questions and summaries are original and grounded in first-party Anthropic documentation, with no third-party question banks; a deterministic fact-check pins the exam parameters and keeps community-reported numbers labeled as such, an optional Claude-powered pass reviews the answer keys, and a Playwright suite runs against the real production bundle. Continuous integration ties it together: every push runs schema validation, the fact-check, and end-to-end tests before deploying to GitHub Pages.