test: dedupe fixtures and test harness setup

src/cron/isolated-agent.delivery.test-helpers.ts

@@ -1,6 +1,8 @@
 import { vi } from "vitest";
 import { runEmbeddedPiAgent } from "../agents/pi-embedded.js";
 import type { CliDeps } from "../cli/deps.js";
+import { runCronIsolatedAgentTurn } from "./isolated-agent.js";
+import { makeCfg, makeJob } from "./isolated-agent.test-harness.js";
 
 export function createCliDeps(overrides: Partial<CliDeps> = {}): CliDeps {
   return {
@@ -27,3 +29,29 @@ export function mockAgentPayloads(
     ...extra,
   });
 }
+
+export async function runTelegramAnnounceTurn(params: {
+  home: string;
+  storePath: string;
+  deps: CliDeps;
+  delivery: {
+    mode: "announce";
+    channel: string;
+    to?: string;
+    bestEffort?: boolean;
+  };
+}): Promise<Awaited<ReturnType<typeof runCronIsolatedAgentTurn>>> {
+  return runCronIsolatedAgentTurn({
+    cfg: makeCfg(params.home, params.storePath, {
+      channels: { telegram: { botToken: "t-1" } },
+    }),
+    deps: params.deps,
+    job: {
+      ...makeJob({ kind: "agentTurn", message: "do it" }),
+      delivery: params.delivery,
+    },
+    message: "do it",
+    sessionKey: "cron:job-1",
+    lane: "cron",
+  });
+}