Dedicated Start / Stop Keyboard Shortcut as alternative to push-to-talk

The push-to-talk shortcut is handy, but has some problematic interactions when used with a non-Apple keyboard, macros, or other non-standard invocation. For example, I have a keyboard macro that sends the PTT keyboard shortcut twice, to invoke start/stop, but it’s unreliable. Additionally, PTT shortcuts that use modifiers (such as CMD+SHIFT) cause issues with other keyboard shortcuts, such as CMD+SHIFT+C.

Having a dedicated keyboard shortcut, such as Option+Space, that toggles the start/stop action would meaningfully improve the experience of using Flow with non-Apple keyboards and other workflows. This is because peripheral config apps like BetterTouchTool or Logitech Options, custom keyboards, macro apps like Keyboard Maestro, or the StreamDeck can all reliably send discrete one-time key presses. But all of the aforementioned input tools struggle with double-tap or tap-and-hold actions.