refactor(core): dedupe shared config and runtime helpers

src/infra/heartbeat-runner.test-harness.ts

@@ -0,0 +1,40 @@
+import { beforeEach } from "vitest";
+import type { ChannelPlugin } from "../channels/plugins/types.plugin.js";
+import { slackPlugin } from "../../extensions/slack/src/channel.js";
+import { setSlackRuntime } from "../../extensions/slack/src/runtime.js";
+import { telegramPlugin } from "../../extensions/telegram/src/channel.js";
+import { setTelegramRuntime } from "../../extensions/telegram/src/runtime.js";
+import { whatsappPlugin } from "../../extensions/whatsapp/src/channel.js";
+import { setWhatsAppRuntime } from "../../extensions/whatsapp/src/runtime.js";
+import { setActivePluginRegistry } from "../plugins/runtime.js";
+import { createPluginRuntime } from "../plugins/runtime/index.js";
+import { createTestRegistry } from "../test-utils/channel-plugins.js";
+
+const slackChannelPlugin = slackPlugin as unknown as ChannelPlugin;
+const telegramChannelPlugin = telegramPlugin as unknown as ChannelPlugin;
+const whatsappChannelPlugin = whatsappPlugin as unknown as ChannelPlugin;
+
+export function installHeartbeatRunnerTestRuntime(params?: { includeSlack?: boolean }): void {
+  beforeEach(() => {
+    const runtime = createPluginRuntime();
+    setTelegramRuntime(runtime);
+    setWhatsAppRuntime(runtime);
+    if (params?.includeSlack) {
+      setSlackRuntime(runtime);
+      setActivePluginRegistry(
+        createTestRegistry([
+          { pluginId: "slack", plugin: slackChannelPlugin, source: "test" },
+          { pluginId: "whatsapp", plugin: whatsappChannelPlugin, source: "test" },
+          { pluginId: "telegram", plugin: telegramChannelPlugin, source: "test" },
+        ]),
+      );
+      return;
+    }
+    setActivePluginRegistry(
+      createTestRegistry([
+        { pluginId: "whatsapp", plugin: whatsappChannelPlugin, source: "test" },
+        { pluginId: "telegram", plugin: telegramChannelPlugin, source: "test" },
+      ]),
+    );
+  });
+}