Improve and complete Punjabi language translations (#724)

- Add 60+ missing translation keys from English base
- Improve existing translations for better accuracy and natural flow
- Update terminology (e.g., 'save' → 'ਸੁਰੱਖਿਅਤ ਕਰੋ', 'primary key' → 'ਮੁੱਖ ਕੁੰਜੀ')
- Add support for new features: enums, versioning, sharing, bulk updates
- Fix grammar and sentence structure for better user experience
- Ensure consistency across all translated strings

Translations now cover 100% of the English base file with improved
Punjabi localization that follows proper linguistic conventions.