fix(keyboard): KeyModifier string parser no longer strips hyphen from key

[northword]

Problem

new KeyModifier("accel,-") results in km.key === "" instead of km.key === "-".

The string constructor at src/managers/keyboard.ts:191 strips characters with regex [ ,\-]. The - was intended as a separator for hyphen-separated input formats (e.g. Ctrl-Shift-B), but the canonical format used throughout KeyModifier is comma-separated (from getRaw()).

Impact

Any key that contains or equals a hyphen (e.g. -, =, or other special characters that might be affected) is lost when constructing from raw strings. This affects downstream plugins that use KeyModifier for shortcut display and comparison.

Reproduction

const km = new KeyModifier("accel,-");
console.log(km.key); // "" — should be "-"

Fix

Remove - from the separator character class in the regex. The comma key is still handled correctly by the existing fallback on line 194.

The hyphen-separated format (e.g. Ctrl-Shift-B) was never used internally by any part of the toolkit, so this change does not break existing functionality.