fix(webapp): name the saturated queue in the suggested prompt

Author: kathiekiwi

apps/webapp/app/components/dashboard-agent/suggested-prompts/signal-prompts.test.ts

@@ -0,0 +1,50 @@
+import { describe, expect, it } from "vitest";
+import type { AgentPageContext } from "@internal/dashboard-agent-contracts";
+import { contextualPromptsBySlot } from "./signal-prompts";
+
+function contextWith(signal: AgentPageContext["signals"][number]): AgentPageContext {
+  return {
+    page: { kind: "runs" },
+    signals: [signal],
+  };
+}
+
+describe("concurrency_saturation prompt", () => {
+  it("names the queue when scope is queue", () => {
+    const bySlot = contextualPromptsBySlot(
+      contextWith({
+        kind: "concurrency_saturation",
+        severity: "crit",
+        scope: "queue",
+        queueName: "black-friday",
+      }),
+      Date.now()
+    );
+
+    expect(bySlot.watch[0]?.prompt).toBe(
+      "Why is the black-friday queue at its concurrency limit? Watch it and tell me when the backlog drains."
+    );
+  });
+
+  it("falls back to generic wording when scope is env", () => {
+    const bySlot = contextualPromptsBySlot(
+      contextWith({ kind: "concurrency_saturation", severity: "crit", scope: "env" }),
+      Date.now()
+    );
+
+    expect(bySlot.watch[0]?.prompt).toBe(
+      "Concurrency is saturated right now. Watch it and tell me when the backlog drains."
+    );
+  });
+
+  it("falls back to generic wording when identity is absent", () => {
+    const bySlot = contextualPromptsBySlot(
+      contextWith({ kind: "concurrency_saturation", severity: "warn" }),
+      Date.now()
+    );
+
+    expect(bySlot.watch[0]?.prompt).toBe(
+      "Concurrency is saturated right now. Watch it and tell me when the backlog drains."
+    );
+  });
+});

apps/webapp/app/components/dashboard-agent/suggested-prompts/signal-prompts.ts

@@ -72,12 +72,17 @@ function promptForSignal(signal: AgentPageSignal, now: number): SuggestedPrompt
       );
     }
 
-    case "concurrency_saturation":
+    case "concurrency_saturation": {
+      const why =
+        signal.scope === "queue" && signal.queueName
+          ? `Why is the ${signal.queueName} queue at its concurrency limit?`
+          : "Concurrency is saturated right now.";
       return ctx(
         "concurrency-saturation",
         "Tell me when the backlog drains",
-        "Concurrency is saturated right now. Watch it and tell me when the backlog drains."
+        `${why} Watch it and tell me when the backlog drains.`
       );
+    }
   }
 }