swarm-ui: test which entries the egress card lists and the swarm-wide add body

frontend/packages/swarm-ui/src/agent/detail/allowed-domains.ts

@@ -83,3 +83,12 @@ export function entryBody(
   const name = domain.trim();
   return forSwarm ? { domain: name } : { domain: name, agent };
 }
+
+/**
+ * The entries that hold for every agent, which the swarm page's egress card
+ * lists: not an agent's own, and not an automatic one (kept by the controller
+ * from an environment or account, so nothing to remove).
+ */
+export function swarmWideEntries(entries: AllowedDomain[]): AllowedDomain[] {
+  return entries.filter((e) => e.agent === undefined && e.derived !== true);
+}

frontend/packages/swarm-ui/src/pages/swarm/EgressCard.tsx

@@ -12,6 +12,7 @@ import { useState } from "preact/hooks";
 import { ApiErrorPanel } from "@hive/shared/api-error-panel.js";
 import { Badge } from "@hive/shared/badge.js";
 import { AddForm } from "../../agent/detail/AllowedDomains.js";
+import { swarmWideEntries } from "../../agent/detail/allowed-domains.js";
 import { useAllowedDomains } from "../../agent/detail/useAllowedDomains.js";
 import { Button } from "../../ui/button/Button.js";
 import { LazyDisclosure } from "../../ui/disclosure/LazyDisclosure.js";
@@ -44,9 +45,7 @@ function EgressBody() {
     );
   }
 
-  const swarmWide = entries.filter(
-    (e) => e.agent === undefined && e.derived !== true,
-  );
+  const swarmWide = swarmWideEntries(entries);
   return (
     <>
       {errorPanel}

frontend/packages/swarm-ui/test/allowed-domains.test.mjs

@@ -5,6 +5,7 @@ import { test } from "node:test";
 import {
   allowedSummary,
   entryGroups,
+  swarmWideEntries,
   entriesFor,
   entryBody,
 } from "../src/agent/detail/allowed-domains.ts";
@@ -85,3 +86,21 @@ test("entries are grouped by source, empty sources left out", () => {
   );
   assert.deepEqual(entryGroups([]), []);
 });
+
+test("the egress card lists only the entries that hold for every agent", () => {
+  const entries = [
+    { domain: "crates.io" },
+    { domain: "docs.rs", agent: "iris" },
+    { domain: "api.example.com", derived: true },
+    { domain: "github.com" },
+  ];
+  assert.deepEqual(
+    swarmWideEntries(entries).map((e) => e.domain),
+    ["crates.io", "github.com"],
+  );
+  assert.deepEqual(swarmWideEntries([]), []);
+});
+
+test("an add from the swarm page, with no agent, is a swarm-wide entry", () => {
+  assert.deepEqual(entryBody("github.com", true, ""), { domain: "github.com" });
+});