{target.displayName}
diff --git a/src/renderer/utils/teamMessageFiltering.ts b/src/renderer/utils/teamMessageFiltering.ts
new file mode 100644
index 00000000..2087bb7c
--- /dev/null
+++ b/src/renderer/utils/teamMessageFiltering.ts
@@ -0,0 +1,54 @@
+import { isInboxNoiseMessage } from '@shared/utils/inboxNoise';
+
+import type { InboxMessage } from '@shared/types';
+
+export interface TeamMessagesFilter {
+ from: Set;
+ to: Set;
+ showNoise: boolean;
+}
+
+export function filterTeamMessages(
+ messages: InboxMessage[],
+ options: {
+ timeWindow?: { start: number; end: number } | null;
+ filter: TeamMessagesFilter;
+ searchQuery: string;
+ }
+): InboxMessage[] {
+ const { timeWindow, filter, searchQuery } = options;
+
+ let list = messages;
+ if (timeWindow) {
+ list = list.filter((m) => {
+ const ts = new Date(m.timestamp).getTime();
+ return ts >= timeWindow.start && ts < timeWindow.end;
+ });
+ }
+ if (!filter.showNoise) {
+ list = list.filter((m) => !isInboxNoiseMessage(typeof m.text === 'string' ? m.text : ''));
+ }
+
+ const hasFrom = filter.from.size > 0;
+ const hasTo = filter.to.size > 0;
+ if (hasFrom || hasTo) {
+ list = list.filter((m) => {
+ const fromMatch = hasFrom && m.from?.trim() && filter.from.has(m.from.trim());
+ const toMatch = hasTo && m.to?.trim() && filter.to.has(m.to.trim());
+ return fromMatch || toMatch;
+ });
+ }
+
+ const q = searchQuery.trim().toLowerCase();
+ if (q) {
+ list = list.filter((m) => {
+ const text = (m.text ?? '').toLowerCase();
+ const summary = (m.summary ?? '').toLowerCase();
+ const from = (m.from ?? '').toLowerCase();
+ const to = (m.to ?? '').toLowerCase();
+ return text.includes(q) || summary.includes(q) || from.includes(q) || to.includes(q);
+ });
+ }
+
+ return list;
+}
diff --git a/test/renderer/utils/teamMessageFiltering.test.ts b/test/renderer/utils/teamMessageFiltering.test.ts
new file mode 100644
index 00000000..123d6462
--- /dev/null
+++ b/test/renderer/utils/teamMessageFiltering.test.ts
@@ -0,0 +1,60 @@
+import { describe, expect, it } from 'vitest';
+
+import { filterTeamMessages } from '@renderer/utils/teamMessageFiltering';
+
+import type { InboxMessage } from '@shared/types';
+
+function makeMessage(overrides: Partial = {}): InboxMessage {
+ return {
+ from: 'team-lead',
+ text: 'Hello',
+ timestamp: '2026-03-09T12:00:00.000Z',
+ read: true,
+ messageId: 'msg-1',
+ ...overrides,
+ };
+}
+
+describe('filterTeamMessages', () => {
+ it('keeps lead-to-user messages visible', () => {
+ const messages = [
+ makeMessage({
+ from: 'lead',
+ to: 'user',
+ text: 'Accepted cross-team request. Delegating now.',
+ source: 'lead_process',
+ }),
+ ];
+
+ const result = filterTeamMessages(messages, {
+ timeWindow: null,
+ filter: { from: new Set(), to: new Set(), showNoise: true },
+ searchQuery: '',
+ });
+
+ expect(result).toHaveLength(1);
+ expect(result[0].to).toBe('user');
+ expect(result[0].source).toBe('lead_process');
+ });
+
+ it('still filters noise messages when showNoise is false', () => {
+ const messages = [
+ makeMessage({
+ text: '{"type":"idle_notification","idleReason":"available"}',
+ }),
+ makeMessage({
+ messageId: 'msg-2',
+ text: 'Real visible message',
+ }),
+ ];
+
+ const result = filterTeamMessages(messages, {
+ timeWindow: null,
+ filter: { from: new Set(), to: new Set(), showNoise: false },
+ searchQuery: '',
+ });
+
+ expect(result).toHaveLength(1);
+ expect(result[0].messageId).toBe('msg-2');
+ });
+});