refactor(channels): dedupe transport and gateway test scaffolds

src/web/auto-reply.broadcast-groups.test-harness.ts

@@ -1,8 +1,10 @@
+import { vi } from "vitest";
 import type { WebInboundMessage } from "./inbound.js";
 import { monitorWebChannel } from "./auto-reply.js";
 import {
   createWebInboundDeliverySpies,
   createWebListenerFactoryCapture,
+  sendWebDirectInboundMessage,
 } from "./auto-reply.test-harness.js";
 
 export async function monitorWebChannelWithCapture(resolver: unknown): Promise<{
@@ -20,3 +22,26 @@ export async function monitorWebChannelWithCapture(resolver: unknown): Promise<{
 
   return { spies, onMessage };
 }
+
+export async function sendWebDirectInboundAndCollectSessionKeys(): Promise<{
+  seen: string[];
+  resolver: ReturnType<typeof vi.fn>;
+}> {
+  const seen: string[] = [];
+  const resolver = vi.fn(async (ctx: { SessionKey?: unknown }) => {
+    seen.push(String(ctx.SessionKey));
+    return { text: "ok" };
+  });
+
+  const { spies, onMessage } = await monitorWebChannelWithCapture(resolver);
+  await sendWebDirectInboundMessage({
+    onMessage,
+    spies,
+    id: "m1",
+    from: "+1000",
+    to: "+2000",
+    body: "hello",
+  });
+
+  return { seen, resolver };
+}