Translate all 17 user-visible strings into Chinese, Hindi, Spanish,
French, Arabic, Bengali, Portuguese, Russian, Urdu, Indonesian,
German, Japanese, Nigerian Pidgin, Marathi, Telugu, Turkish, Tamil
and Vietnamese. RTL support confirmed for Arabic and Urdu.
Expanded the .gitignore to cover more build artifacts, IDE, and OS-specific files. Significantly enhanced the README.md with a detailed app description, feature list, architecture overview, tech stack, and build instructions for better onboarding and project clarity.