swarm-ui: retrying a broadcast shows the agents that failed, even ones the filter hides

docs/swarm/ui.md

@@ -307,8 +307,8 @@ seconds to answer, and the button reads **sending…** meanwhile.
 
 The page then lists what happened to each agent. An agent that wasn't
 listening shows as not sent, with the reason, and the others still got the
-message. **select the N that failed** ticks just those so you can send the same
+message. **select the N that failed** ticks just those, switching to **all** if the
-message again. When every agent got the message the box clears; otherwise the
+filter hid any, so you can send the same message again. When every agent got the message the box clears; otherwise the
 text stays.
 
 ### Inference settings

frontend/packages/swarm-ui/src/pages/broadcast/BroadcastPage.tsx

@@ -25,6 +25,7 @@ import {
 import { TextAreaField } from "../../ui/text-area-field/TextAreaField.js";
 import {
   failedAgents,
+  filterShowing,
   isRunning,
   parseResults,
   selectedVisible,
@@ -130,7 +131,10 @@ export function BroadcastPage() {
   }
 
   function retryFailed(results: BroadcastResult[]) {
-    setTicked(failedAgents(results));
+    const failed = failedAgents(results);
+    // Only this page's view changes; the saved choice stays as it was.
+    setFilterState(filterShowing(filter, all, failed));
+    setTicked(failed);
     setSend({ status: "idle" });
   }
 

frontend/packages/swarm-ui/src/pages/broadcast/broadcast-types.ts

@@ -38,6 +38,20 @@ export function selectedVisible(
   return ticked.filter((name) => shown.has(name));
 }
 
+/**
+ * The filter to show `names` under: `filter` itself when it shows them all,
+ * otherwise `all`. A resend to agents that failed must show them ticked, and
+ * the failures are often the agents the `running` filter hides.
+ */
+export function filterShowing(
+  filter: AgentFilter,
+  agents: BroadcastAgent[],
+  names: string[],
+): AgentFilter {
+  const shown = new Set(visibleAgents(agents, filter).map((a) => a.name));
+  return names.every((n) => shown.has(n)) ? filter : "all";
+}
+
 /** `ticked` with `name` flipped. */
 export function toggled(ticked: string[], name: string): string[] {
   return ticked.includes(name)

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

@@ -5,6 +5,7 @@ import assert from "node:assert/strict";
 import { test } from "node:test";
 import {
   failedAgents,
+  filterShowing,
   MAX_BROADCAST,
   isRunning,
   parseResults,
@@ -94,3 +95,14 @@ test("an answer that is not the agreed shape is null, not an empty list", () =>
 test("one broadcast may name at most 64 agents", () => {
   assert.equal(MAX_BROADCAST, 64);
 });
+
+test("a retry shows the failed agents even when the filter hides them", () => {
+  const agents = [
+    { name: "a", snapshot: { running: true } },
+    { name: "b", snapshot: { running: false } },
+  ];
+  assert.equal(filterShowing("running", agents, ["a"]), "running");
+  assert.equal(filterShowing("running", agents, ["a", "b"]), "all");
+  assert.equal(filterShowing("running", agents, ["b"]), "all");
+  assert.equal(filterShowing("all", agents, ["b"]), "all");
+});