Three correctness fixes to the hotkey recorder based on dogfood logs:
1. Modifier set now includes Super / OS / Hyper (webkit2gtk on Linux
fires e.key === "Super" for the Windows key — previously that key
got captured as the final trigger, producing invalid 'Ctrl+Shift+Super'
strings the evdev parser rejected).
2. resolveTriggerKey() uses e.code (physical, shift-independent key)
to resolve shifted punctuation back to the unshifted name the evdev
parser understands: '+' -> '=', '|' -> '\\', etc. Letters and digits
also use e.code (KeyA -> A, Digit1 -> 1) to avoid layout quirks.
3. Numpad keys intentionally not mapped to main-keyboard equivalents —
they are distinct evdev codes. Leaves the parser to reject them so
the user gets a toast instead of a silently-wrong binding.
Registration failures now surface as a toast and revert
settings.globalHotkey to the last successfully-registered value (if
any), so the UI cannot lie about what is actually bound.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>