Registry of pending actionable notifications.
Stores plain data for notices the user can act on from a dedicated modal screen. The registry is deliberately UI-agnostic: UI routing (toast click, keybinds) lives in the app layer.
Stable identifiers for notification actions dispatched by the app.
One button/action row in the notification modal.
Typed payload for a missing-dependency notification.
Typed payload for an update-available notification.
A single notice waiting for user action.
Immutable value object: the registry owns the
key-to-toast-identity binding (see NotificationRegistry) so
external callers cannot corrupt click-routing indices by mutating
notifications after construction.
In-memory store of pending notifications.
Instance-scoped (one per app) so test apps don't pollute each other. Owns the bidirectional key-to-toast-identity binding so callers cannot accidentally desynchronize the click-routing indices.
