feat: move automations into a first-party plugin

plugins/host-metrics/backend/automation-bridge.ts

@@ -12,7 +12,7 @@
  */
 
 import { pluginEvents, TOPICS } from "../../../src/backend/plugins/events.js";
-import type { MetricsSnapshot } from "../../../src/backend/automations/conditions.js";
+import type { MetricsSnapshot } from "../../automations/backend/conditions.js";
 
 export interface HostMetricsPayload {
   hostId: number;

plugins/host-metrics/backend/routes.ts

@@ -3046,7 +3046,7 @@ app.post("/metrics/connect-totp", async (req, res) => {
 
 // Lets automations keep metrics flowing for hosts they watch, through the same
 // viewer refcount the UI uses rather than around it.
-import("../../../src/backend/automations/headless-viewer.js")
+import("../../automations/backend/headless-viewer.js")
   .then(({ setViewerRegistry }) => {
     setViewerRegistry({
       registerViewer: (hostId, sessionId, userId) =>