Hook or Provider?

Both entry points return the same BroadcastActions. The difference is where the channel is opened and who can reach it.

Situation	Use
One component (or a few unrelated ones) each need their own channel	useBroadcastChannel
Many components in a subtree share one channel	BroadcastProvider
Several independent channels in one component	useBroadcastChannel, once per channel
A design-system-level “app bus”	BroadcastProvider near the root

Ask: if I add a second consumer, would I copy-paste the same hook call? If yes, lift the channel into a provider and let consumers call useBroadcastProvider().

Mixing is fine: a provider can carry the shared app channel while an isolated widget opens its own widget-settings channel with the hook.