feat(companion): add pending work snapshot helper

src/companion/runtimeClient.ts

@@ -47,6 +47,12 @@ export interface WaitForIdleOptions {
   signal?: AbortSignal;
 }
 
+export interface PendingWorkSnapshot {
+  pendingRequestCount: number;
+  pendingEventWaitCount: number;
+  hasPendingWork: boolean;
+}
+
 export type CompanionEventHandler = (event: string, data: unknown) => void;
 export type CompanionTypedEventHandler<TData = unknown> = (data: TData) => void;
 export type CompanionEventPredicate<TData = unknown> = (data: TData) => boolean;
@@ -320,6 +326,14 @@ export class CompanionRuntimeClient {
     return this.pendingRequestCount > 0 || this.pendingEventWaitCount > 0;
   }
 
+  getPendingWorkSnapshot(): PendingWorkSnapshot {
+    return {
+      pendingRequestCount: this.pendingRequestCount,
+      pendingEventWaitCount: this.pendingEventWaitCount,
+      hasPendingWork: this.hasPendingWork,
+    };
+  }
+
   async connect(): Promise<void> {
     if (this.connected) {
       return;