feat(mingling_picker_macros): add $+ $- $^ special tokens to

internal_repeat

Extend the `internal_repeat` macro with new special tokens:
- `$+`/`ident$+` for current + 1
- `$-`/`ident$-` for current - 1 (clamped at 0)
- `$^`/`ident$^` for min (aka start) value

Move the repetition marker from outside the paren to the last token
inside, supporting `(group,+)` syntax where `+` is the final token.
A trailing `+` or `-` after `)` shifts the repetition count.

Add `PickerPattern::pick` method using new syntax to allow
incremental composition of typed picks.

0 files changed, 0 insertions, 0 deletions