feat(webapp): count wake-feed requests

Author: kathiekiwi

apps/webapp/app/routes/resources.orgs.$organizationSlug.projects.$projectParam.env.$envParam.dashboard-agent.ts

@@ -41,6 +41,7 @@ import {
 } from "~/services/dashboardAgentWatches.server";
 import {
   dashboardAgentApiOrigin,
+  dashboardAgentWakeFeedCounter,
   isDashboardAgentConfigured,
   mintDashboardAgentToken,
   mintDashboardAgentUserActorToken,
@@ -124,6 +125,7 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
   // and asks the agent DB one question. The list is recent deliveries, not unread ones;
   // the client dedupes by id.
   if (searchParams.get("unread") === "1") {
+    dashboardAgentWakeFeedCounter.inc();
     const scoped = await $replica.project.findFirst({
       where: {
         slug: projectParam,

apps/webapp/app/services/dashboardAgent.server.ts

@@ -1,14 +1,30 @@
 import { signUserActorToken } from "@trigger.dev/rbac";
 import { TriggerClient } from "@trigger.dev/sdk";
 import { chat } from "@trigger.dev/sdk/ai";
+import { Counter } from "prom-client";
 import { prisma } from "~/db.server";
 import { env } from "~/env.server";
+import { metricsRegister } from "~/metrics.server";
+import { singleton } from "~/utils/singleton";
 import { runStore } from "~/v3/runStore.server";
 import { githubApp } from "./gitHub.server";
 import { logger } from "./logger.server";
 
 const TASK_ID = "dashboard-agent";
 
+// The wake poll runs once a minute per visible tab. That trade-off is only defensible while it
+// stays measurable, so count the requests. singleton: module-scope registration double-registers
+// under dev HMR.
+export const dashboardAgentWakeFeedCounter = singleton(
+  "dashboardAgentWakeFeedCounter",
+  () =>
+    new Counter({
+      name: "dashboard_agent_wake_feed_requests_total",
+      help: "Requests to the dashboard agent's wake feed",
+      registers: [metricsRegister],
+    })
+);
+
 // Read-only cap on the agent's delegated user-actor token. `read:apiKeys` is
 // what lets it exchange the token for an env JWT (the gate on the exchange
 // route); the rest scope the actual reads. No write/admin scopes, so even a