Module entries
- IWatchinterfaceReference-counted watch handle with observables and keyed listener registration.
- IWatchCallbacksinterfaceZero-allocation callback bundle for change, context-change, and cycle events.
- IWatchDatainterfaceWatch registration payload containing identity and state options.
- IWatchDispableOwnerinterfaceDisposable-owner contract used internally by watch instances.
- IWatchFactorytypeKeyed watch factory contract used by runtime services.
- IWatchIdinterfaceIdentity key for a watch registration `(context, index)`.
- WatchFactoryclassCreates and reuses reference-counted watch instances keyed by context/index/watch-rule identity.