What
Claude Code keeps a list, or registry, of buttons that plugins (add-ons that extend Claude Code) can place on screen. Each button in that list now stores its own options, and a lookup can be narrowed to the buttons belonging to one requestId, an identifier for a single request.
Why
In practice this lets Claude Code find the right button for a given request instead of treating all hosted buttons alike.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say what the per-button options contain or what a reader sees differently.