feat: wire all barrel exports, resolve conflicts, add 8 sub-path import tests

src/reactive/index.ts

@@ -1,18 +1,17 @@
 export {
   WorkflowReactiveRoot,
   type FailurePolicy,
-  type CallEventMapValue,
-  type CallRequestedEvent,
-  type CallRespondedEvent,
-  type CallErrorEvent,
-  type CallAbortedEvent,
-  type CallCompletedEvent,
   type EventLogProjection,
   type AggregateStatus,
   type ParallelGroup,
   type ParallelGroupConfig,
 } from "./workflow.js";
 
+export type {
+  WorkflowNode,
+  ReactiveContext,
+} from "../host/reactive.js";
+
 export {
   computePreconditions,
   computeBlockedByFailure,