chore: include pre-built dist for github install

dist/tools/delegate-task/background-continuation.d.ts

@@ -0,0 +1,3 @@
+import type { DelegateTaskArgs, ToolContextWithMetadata } from "./types";
+import type { ExecutorContext, ParentContext } from "./executor-types";
+export declare function executeBackgroundContinuation(args: DelegateTaskArgs, ctx: ToolContextWithMetadata, executorCtx: ExecutorContext, parentContext: ParentContext): Promise<string>;