fix(team): avoid leaking lead backend into mixed member summary

src/renderer/utils/memberRuntimeSummary.ts

@@ -45,14 +45,25 @@ export function resolveMemberRuntimeSummary(
   spawnEntry: MemberSpawnStatusEntry | undefined,
   runtimeEntry?: TeamAgentRuntimeEntry
 ): string | undefined {
+  const memberProviderBackendId = (member as ResolvedTeamMember & { providerBackendId?: string })
+    .providerBackendId;
   const configuredProvider: TeamProviderId =
     member.providerId ?? launchParams?.providerId ?? 'anthropic';
-  const configuredModel = member.model?.trim() || launchParams?.model?.trim() || '';
-  const configuredEffort = member.effort ?? launchParams?.effort;
+  const inheritsLeadRuntimeDefaults =
+    member.providerId == null ||
+    launchParams?.providerId == null ||
+    member.providerId === launchParams.providerId;
+  const configuredModel =
+    member.model?.trim() || (inheritsLeadRuntimeDefaults ? launchParams?.model?.trim() || '' : '');
+  const configuredEffort =
+    member.effort ?? (inheritsLeadRuntimeDefaults ? launchParams?.effort : undefined);
   const runtimeModel = spawnEntry?.runtimeModel?.trim() || runtimeEntry?.runtimeModel?.trim();
+  const configuredProviderBackendId =
+    memberProviderBackendId ??
+    (inheritsLeadRuntimeDefaults ? launchParams?.providerBackendId : undefined);
   const backendLabel = normalizeMemberBackendLabel(
     configuredProvider,
-    formatTeamProviderBackendLabel(configuredProvider, launchParams?.providerBackendId)
+    formatTeamProviderBackendLabel(configuredProvider, configuredProviderBackendId)
   );
   const memorySuffix =
     typeof runtimeEntry?.rssBytes === 'number' && runtimeEntry.rssBytes > 0

test/renderer/utils/memberRuntimeSummary.test.ts

@@ -4,7 +4,9 @@ import { resolveMemberRuntimeSummary } from '@renderer/utils/memberRuntimeSummar
 
 import type { MemberSpawnStatusEntry, ResolvedTeamMember } from '@shared/types';
 
-function createMember(overrides: Partial<ResolvedTeamMember> = {}): ResolvedTeamMember {
+type TestResolvedTeamMember = ResolvedTeamMember & { providerBackendId?: string };
+
+function createMember(overrides: Partial<TestResolvedTeamMember> = {}): TestResolvedTeamMember {
   return {
     name: 'alice',
     agentId: 'alice@test-team',
@@ -118,4 +120,27 @@ describe('resolveMemberRuntimeSummary', () => {
       )
     ).toBe('5.4 Mini · Medium · Codex');
   });
+
+  it('does not leak the lead backend label into OpenCode side-lane members', () => {
+    const member = createMember({
+      providerId: 'opencode',
+      providerBackendId: undefined,
+      model: 'opencode/nemotron-3-super-free',
+      effort: undefined,
+    });
+
+    expect(
+      resolveMemberRuntimeSummary(
+        member,
+        {
+          providerId: 'codex',
+          providerBackendId: 'codex-native',
+          model: 'gpt-5.4',
+          effort: 'medium',
+          limitContext: false,
+        },
+        undefined
+      )
+    ).toBe('nemotron-3-super-free · via OpenCode');
+  });
 });