This demo app is a React-based internationalization demo platform that shows how locale-aware UI, AI-assisted quality review, and modern delivery workflows can work together in one product.

At a high level, it lets users:

• enter or speak a locale (en, en-US, en_JP, ja-JP, ja-US, pl-PL, tr-TR, ar-EG, ko-KR, zh-TW, etc)  

• render localized labels and locale-sensitive values

• fall back gracefully when a built-in locale bundle is missing

• evaluate the result through a GenAI-assisted locale QA layer

What the app does

• Supports typed locale input and voice-driven locale input (you could day "English US", "Japanese Japan" in the format of <language> <region>)

• Resolves built-in locale bundles for common locales

• Uses fallback logic for unsupported or mixed locales

• Renders locale-aware values such as:

  • language

  • region

  • date/time

  • numbers

  • percentages

  • first day of week

  • ICU plural examples

• Shows a GenAI-Assisted Locale QA panel that explains:

  • bundle source

  • formatting locale

  • label language

  • issue type

  • recommendation

  • deterministic QA checks

  • optional AI review summary, score, confidence, and findings

GenAI capabilities

• AI-assisted locale evaluation service

  • reviews rendered locale output

  • provides summary, score, confidence, findings, and next-step guidance

• Deterministic fallback QA

  • keeps evaluation working even when AI is unavailable

• Dynamic translation fallback

  • helps cover unsupported locales when no built-in bundle exists

• Voice interaction

  • lets users speak locale phrases and route them into the same evaluation/rendering flow

CI/CD and engineering practices

• Uses GitHub-based branching and PR workflow

• Changes are validated through automated checks before merge

• Test/build verification is part of the delivery flow:

  • npm test -- --watchAll=false

  • npm run build

• CI workflow was hardened to make review automation more reliable, including safer GitHub Actions output handling

• The app has been developed in small, mergeable increments with separate PRs for:

  • locale bundles

  • QA panel

  • backend evaluation service

  • AI review

  • fallback messaging

  • voice input

  • workflow reliability fixes

Differences to regular i18n app
This is more than a locale demo. It is an AI-assisted internationalization operations prototype that combines:

• frontend locale UX

• backend evaluation services

• fallback resilience

• CI/CD discipline

• GenAI-assisted quality analysis