• feat(types): keyFromSelector now returns a branded SelectorKey type that t() accepts directly, enabling pre-computed and reusable translation keys 2364
• feat: support selector syntax for keyPrefix in getFixedT and per-call options 2367
• feat(types): interpolation values are now automatically typed based on built-in format specifiers — {{val, number}} requires number, {{val, datetime}} requires Date, {{name}} requires string, etc. Custom formatters can be typed via interpolationFormatTypeMap in CustomTypeOptions 2378
• fix(types): FilterKeys in selector mode now preserves non-context, non-plural leaf keys when context is provided, fixing incorrect type narrowing when combining returnObjects: true with context 2398