the builds list keeps the swarm's deploy builds too

build_meta, the build of each agent from internal/meta before a deploy, now
writes its result into the same list as the config PR builds: the agent, the
internal/meta commit, how it ended and what nix printed. The builds card titles
them by agent and shows them with the PR builds.

frontend/packages/swarm-ui/test/builds-types.test.mjs

@@ -3,7 +3,11 @@
 // stripping, so the `.ts` module is imported as it is.
 import assert from "node:assert/strict";
 import { test } from "node:test";
-import { bodyText, wantedRun } from "../src/pages/builds/builds-types.ts";
+import {
+  bodyText,
+  runTitle,
+  wantedRun,
+} from "../src/pages/builds/builds-types.ts";
 
 const base = {
   id: "atlas-abc-1",
@@ -49,3 +53,20 @@ test("a run with no text for its outcome shows no body", () => {
   assert.equal(bodyText({ ...base, outcome: "failed" }), null);
   assert.equal(bodyText({ ...base, outcome: "built", error_tail: "x" }), null);
 });
+
+test("a config PR's build is titled by its repo and PR, a deploy's by its agent", () => {
+  assert.equal(
+    runTitle({ ...base, outcome: "built" }),
+    "agent-configs/atlas #3",
+  );
+  const deploy = {
+    ...base,
+    repo: "internal/meta",
+    pr: undefined,
+    agent: "atlas",
+    outcome: "built",
+  };
+  assert.equal(runTitle(deploy), "atlas from internal/meta");
+  assert.equal(runTitle({ ...deploy, pr: null }), "atlas from internal/meta");
+  assert.equal(runTitle({ ...deploy, agent: null }), "internal/meta");
+});