Class DebounceTransfer<T>

Reactive channel with debounced emission to subscribers on push().

Capabilities: isInput, isOutput, isPushable, isSubscribable

Mechanics:

1. push(data) — resets the previous timer, starts a new one for delay ms
2. On timer expiry — writes the last value to _state, notifies subscribers, clears _state
3. subscribe(handler) — subscribes to notifications
4. destroy() — clears the timer, unsubscribes subscribers, clears state

Each new push() resets the timer — subscribers are notified only after delay ms of silence following the last push().

Configuration (DebounceTransferConfig):

• delay: number — silence period before emitting data (ms)

Difference from DelayedPushChannelTransfer:

• Each push() resets the timer (rather than creating an independent one)
• Subscribers receive only the last value after a silence period

Use cases:

• Debouncing user input (search, autosave)
• Reducing event frequency to the "last" one after a pause
• Replacing manual clearTimeout/setTimeout pattern