i18n Consistency Check & Cleanup

Comprehensive i18n analysis tool for the Tetris project supporting 2 languages (Japanese, English).

Quick Check

bun run check:i18n

Detection Capabilities

🔴 Missing Keys (Critical)

• Keys used in code but not present in translation files
• Priority: Critical (causes runtime errors)
• Impact: Displays raw translation keys to users
• Action: Add missing keys to all translation files immediately