From a56e1082e5c712e6beed6212c69fda020cddedcd Mon Sep 17 00:00:00 2001
From: Alvaro Parker <aparker@azurian.com>
Date: Wed, 7 Oct 2026 09:32:53 -0300
Subject: [PATCH] fix(frontend): make overlays accessible and wake word opt-in

---
 vocero-api/CHANGELOG.md                       |   4 +
 vocero-frontend/src/App.tsx                   | 150 ++++++------------
 vocero-frontend/src/components/Bubbles.tsx    |   4 +-
 vocero-frontend/src/components/Dialog.tsx     |   8 +-
 .../src/components/ReportsPanel.tsx           |  54 +++++++
 .../src/components/WakeWordControl.test.tsx   |  49 ++++++
 .../src/components/WakeWordControl.tsx        |  32 ++++
 vocero-frontend/src/hooks/use-media-query.ts  |  15 ++
 vocero-frontend/src/hooks/use-wake-word.ts    |  15 +-
 vocero-frontend/src/realtime/controller.ts    |   9 ++
 vocero-frontend/src/styles.css                |  73 +++++----
 vocero-frontend/src/test/setup.ts             |  10 ++
 12 files changed, 285 insertions(+), 138 deletions(-)
 create mode 100644 vocero-frontend/src/components/ReportsPanel.tsx
 create mode 100644 vocero-frontend/src/components/WakeWordControl.test.tsx
 create mode 100644 vocero-frontend/src/components/WakeWordControl.tsx
 create mode 100644 vocero-frontend/src/hooks/use-media-query.ts

diff --git a/vocero-api/CHANGELOG.md b/vocero-api/CHANGELOG.md
index bcf6f1f..6f994e3 100644
--- a/vocero-api/CHANGELOG.md
+++ b/vocero-api/CHANGELOG.md
@@ -9,6 +9,10 @@ the implementation at the recorded date; current operating instructions live in
 
 ### Fixed
 
+- Use native dialogs for startup and mobile reports, restore focus on dismissal,
+  and make duplicate transcript bubbles inert. Require explicit wake-word opt-in,
+  show when it is listening, and turn it off when the conversation stops.
+
 - Isolate microphone meter subscriptions from the application tree. Apply draft settings only
   on Save, preserve explicitly live noise calibration, and persist/send only relevant changes.
 
diff --git a/vocero-frontend/src/App.tsx b/vocero-frontend/src/App.tsx
index 0b5cc38..4333978 100644
--- a/vocero-frontend/src/App.tsx
+++ b/vocero-frontend/src/App.tsx
@@ -1,13 +1,15 @@
-import { BookOpen, ChartNoAxesColumn, ChevronRight, Info, PanelLeft, Settings, Wrench, X } from "lucide-react";
+import { BookOpen, Info, PanelLeft, Settings, Wrench, X } from "lucide-react";
 import { useEffect, useLayoutEffect, useState, useSyncExternalStore } from "react";
 
 import { Bubbles } from "./components/Bubbles";
 import { Conversation } from "./components/Conversation";
+import { Dialog } from "./components/Dialog";
+import { ReportsPanel } from "./components/ReportsPanel";
 import { AboutDialog, ProfileDialog, RagDialog, SettingsDialog, ToolsDialog } from "./components/SettingsDialogs";
 import { VoiceStage } from "./components/VoiceStage";
-import { useWakeWord } from "./hooks/use-wake-word";
+import { WakeWordControl } from "./components/WakeWordControl";
+import { useMediaQuery } from "./hooks/use-media-query";
 import { initials, profileName } from "./lib/context";
-import { reportSuggestions } from "./lib/reports";
 import { isDebug } from "./lib/settings";
 import { ACTIVE_STATES, VoiceController } from "./realtime/controller";
 
@@ -17,6 +19,7 @@ export default function App() {
   const state = useSyncExternalStore(controller.subscribe, controller.getSnapshot);
   const [modal, setModal] = useState<Modal>(null);
   const [reportsOpen, setReportsOpen] = useState(false);
+  const desktop = useMediaQuery("(min-width: 1024px)");
   const debug = isDebug();
   const white = state.config.theme === "white";
   const name = profileName(state.profile);
@@ -51,21 +54,6 @@ export default function App() {
       clearTimeout(timer);
     };
   }, [ready, controller]);
-  useWakeWord(ready && !ACTIVE_STATES.has(state.status) && !modal && !state.unlock, controller);
-  useEffect(() => {
-    if (!reportsOpen) {
-      return;
-    }
-    const escape = (event: KeyboardEvent) => {
-      if (event.key === "Escape") {
-        setReportsOpen(false);
-      }
-    };
-    window.addEventListener("keydown", escape);
-    return () => {
-      window.removeEventListener("keydown", escape);
-    };
-  }, [reportsOpen]);
   const close = () => {
     setModal(null);
   };
@@ -98,20 +86,36 @@ export default function App() {
   return (
     <>
       {state.unlock && (
-        <button
-          className="talk-unlocker"
-          type="button"
-          onClick={() => {
-            void controller.start();
+        <Dialog
+          title="Listo para conversar"
+          onClose={() => {
+            controller.dismissUnlock();
           }}
-          aria-label="Empezar a hablar"
         >
-          <span className="talk-unlocker-hint">
-            <span className="talk-unlocker-spinner" aria-hidden="true" />
-            <span className="talk-unlocker-title">Preparando Vocero…</span>
-            <span className="talk-unlocker-sub">Toca en cualquier lugar para empezar a hablar</span>
-          </span>
-        </button>
+          <p className="tools-intro">
+            Activa el micrófono para hablar con Vocero. Puedes detener la conversación en cualquier momento.
+          </p>
+          <footer className="modal-footer">
+            <button
+              className="btn secondary"
+              type="button"
+              onClick={() => {
+                controller.dismissUnlock();
+              }}
+            >
+              Ahora no
+            </button>
+            <button
+              className="btn primary"
+              type="button"
+              onClick={() => {
+                void controller.start();
+              }}
+            >
+              Empezar a hablar
+            </button>
+          </footer>
+        </Dialog>
       )}
       <div id="app" className={hasReports ? "has-reports" : ""}>
         <header className="topbar">
@@ -141,7 +145,7 @@ export default function App() {
               {initials(name)}
             </button>
           )}
-          {hasReports && (
+          {hasReports && !desktop && (
             <button
               id="reports-sidebar-toggle"
               className="icon-btn"
@@ -209,27 +213,6 @@ export default function App() {
             Enviar comentarios
           </a>
         </nav>
-        {white && (
-          <div className="status-card" aria-label="Estado de la sesión">
-            <div className="status-card-icon" aria-hidden="true">
-              <ChartNoAxesColumn size={24} />
-            </div>
-            <div className="status-card-text">
-              <h2 className="status-card-title">Listo para conversar</h2>
-              <p className="status-card-sub">Informes, análisis, datos y mucho más.</p>
-            </div>
-            <button
-              className="status-card-arrow icon-btn"
-              type="button"
-              aria-label="Ver más detalles"
-              onClick={() => {
-                setModal("about");
-              }}
-            >
-              <ChevronRight size={22} />
-            </button>
-          </div>
-        )}
         {state.error && (
           <div className="app-error" role="alert">
             <span>{state.error}</span>
@@ -246,60 +229,21 @@ export default function App() {
           </div>
         )}
         <VoiceStage state={state} controller={controller} />
+        {ready && !ACTIVE_STATES.has(state.status) && !modal && !state.unlock && !reportsOpen && (
+          <WakeWordControl enabled={state.wakeWordEnabled} controller={controller} />
+        )}
         <Conversation messages={state.messages} userName={name || "Usuario"} status={state.status} white={white} />
       </div>
       {!white && ACTIVE_STATES.has(state.status) && <Bubbles messages={state.messages} userName={name || "Usuario"} />}
-      {hasReports && (
-        <aside
-          id="reports-sidebar"
-          className={`reports-sidebar ${reportsOpen ? "open" : ""}`}
-          aria-label="Reportes programados"
-        >
-          <button
-            className="reports-sidebar-backdrop"
-            type="button"
-            aria-label="Cerrar panel de reportes"
-            tabIndex={reportsOpen ? 0 : -1}
-            onClick={() => {
-              setReportsOpen(false);
-            }}
-          />
-          <div className="reports-sidebar-inner">
-            <header className="reports-sidebar-header">
-              <h2>Reportes</h2>
-              <button
-                id="reports-sidebar-close"
-                className="icon-btn"
-                type="button"
-                aria-label="Cerrar reportes"
-                onClick={() => {
-                  setReportsOpen(false);
-                }}
-              >
-                <X size={18} />
-              </button>
-            </header>
-            <div className="reports-hint">
-              <p>{state.reports?.count} reportes disponibles</p>
-              <ul>
-                {state.reports?.hints.map((hint, index) => (
-                  <li key={index}>{hint}</li>
-                ))}
-              </ul>
-              {state.reports?.note && <p>{state.reports.note}</p>}
-            </div>
-            {state.reports && (
-              <div className="reports-suggestions">
-                <h3 className="reports-suggestions-title">Puedes preguntar</h3>
-                <ul className="reports-suggestions-list">
-                  {reportSuggestions(state.reports).map((suggestion) => (
-                    <li key={suggestion}>{suggestion}</li>
-                  ))}
-                </ul>
-              </div>
-            )}
-          </div>
-        </aside>
+      {hasReports && state.reports && (
+        <ReportsPanel
+          reports={state.reports}
+          desktop={desktop}
+          open={reportsOpen}
+          onClose={() => {
+            setReportsOpen(false);
+          }}
+        />
       )}
       {modal === "settings" && <SettingsDialog state={state} controller={controller} onClose={close} />}
       {modal === "tools" && <ToolsDialog state={state} controller={controller} onClose={close} />}
diff --git a/vocero-frontend/src/components/Bubbles.tsx b/vocero-frontend/src/components/Bubbles.tsx
index a08a7cb..2154406 100644
--- a/vocero-frontend/src/components/Bubbles.tsx
+++ b/vocero-frontend/src/components/Bubbles.tsx
@@ -15,7 +15,7 @@ function Bubble({ message, userName }: { message: Message; userName: string }) {
       clearTimeout(timer);
     };
   }, [message.text, message.partial]);
-  if (expiredText === message.text) {
+  if (!message.partial && expiredText === message.text) {
     return null;
   }
   return (
@@ -36,7 +36,7 @@ function Bubble({ message, userName }: { message: Message; userName: string }) {
 }
 export const Bubbles = memo(function Bubbles({ messages, userName }: { messages: Message[]; userName: string }) {
   return (
-    <div className="bubble-stack" aria-hidden="true">
+    <div className="bubble-stack" aria-hidden="true" inert>
       {messages.slice(-3).map((message) => (
         <Bubble key={message.id} message={message} userName={userName} />
       ))}
diff --git a/vocero-frontend/src/components/Dialog.tsx b/vocero-frontend/src/components/Dialog.tsx
index 987cd46..358d2b9 100644
--- a/vocero-frontend/src/components/Dialog.tsx
+++ b/vocero-frontend/src/components/Dialog.tsx
@@ -1,5 +1,5 @@
 import { X } from "lucide-react";
-import { useEffect, useId, useRef, type ReactNode } from "react";
+import { useLayoutEffect, useId, useRef, type ReactNode } from "react";
 
 interface Props {
   title: string;
@@ -10,11 +10,15 @@ interface Props {
 export function Dialog({ title, children, onClose, className = "" }: Props) {
   const ref = useRef<HTMLDialogElement>(null);
   const titleId = useId();
-  useEffect(() => {
+  useLayoutEffect(() => {
     const dialog = ref.current;
+    const opener = document.activeElement;
     dialog?.showModal();
     return () => {
       dialog?.close();
+      if (opener instanceof HTMLElement && opener.isConnected) {
+        opener.focus({ preventScroll: true });
+      }
     };
   }, []);
   return (
diff --git a/vocero-frontend/src/components/ReportsPanel.tsx b/vocero-frontend/src/components/ReportsPanel.tsx
new file mode 100644
index 0000000..72d1370
--- /dev/null
+++ b/vocero-frontend/src/components/ReportsPanel.tsx
@@ -0,0 +1,54 @@
+import type { Reports } from "../lib/contracts";
+import { reportSuggestions } from "../lib/reports";
+import { Dialog } from "./Dialog";
+
+function ReportContent({ reports }: { reports: Reports }) {
+  return (
+    <div className="reports-content">
+      <div className="reports-hint">
+        <p>{reports.count} reportes disponibles</p>
+        <ul>
+          {reports.hints.map((hint, index) => (
+            <li key={index}>{hint}</li>
+          ))}
+        </ul>
+        {reports.note && <p>{reports.note}</p>}
+      </div>
+      <div className="reports-suggestions">
+        <h3 className="reports-suggestions-title">Puedes preguntar</h3>
+        <ul className="reports-suggestions-list">
+          {reportSuggestions(reports).map((suggestion) => (
+            <li key={suggestion}>{suggestion}</li>
+          ))}
+        </ul>
+      </div>
+    </div>
+  );
+}
+export function ReportsPanel({
+  reports,
+  desktop,
+  open,
+  onClose,
+}: {
+  reports: Reports;
+  desktop: boolean;
+  open: boolean;
+  onClose: () => void;
+}) {
+  if (desktop) {
+    return (
+      <aside id="reports-sidebar" className="reports-panel" aria-label="Reportes programados">
+        <h2>Reportes</h2>
+        <ReportContent reports={reports} />
+      </aside>
+    );
+  }
+  return open ? (
+    <Dialog title="Reportes" className="reports-drawer" onClose={onClose}>
+      <div id="reports-sidebar">
+        <ReportContent reports={reports} />
+      </div>
+    </Dialog>
+  ) : null;
+}
diff --git a/vocero-frontend/src/components/WakeWordControl.test.tsx b/vocero-frontend/src/components/WakeWordControl.test.tsx
new file mode 100644
index 0000000..b2449a2
--- /dev/null
+++ b/vocero-frontend/src/components/WakeWordControl.test.tsx
@@ -0,0 +1,49 @@
+import { act, render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { useSyncExternalStore } from "react";
+import { afterEach, expect, it, vi } from "vitest";
+
+import { VoiceController } from "../realtime/controller";
+import { WakeWordControl } from "./WakeWordControl";
+
+class Recognition {
+  static instances: Recognition[] = [];
+  lang = "";
+  continuous = false;
+  interimResults = false;
+  onstart: (() => void) | null = null;
+  onend: (() => void) | null = null;
+  onerror = null;
+  onresult = null;
+  start = vi.fn(() => {
+    this.onstart?.();
+  });
+  abort = vi.fn();
+  constructor() {
+    Recognition.instances.push(this);
+  }
+}
+function Control({ controller }: { controller: VoiceController }) {
+  const state = useSyncExternalStore(controller.subscribe, controller.getSnapshot);
+  return <WakeWordControl enabled={state.wakeWordEnabled} controller={controller} />;
+}
+afterEach(() => {
+  vi.unstubAllGlobals();
+});
+it("requires opt-in, displays actual listening, and releases recognition on Stop", async () => {
+  Recognition.instances = [];
+  vi.stubGlobal("SpeechRecognition", Recognition);
+  const controller = new VoiceController();
+  const user = userEvent.setup();
+  render(<Control controller={controller} />);
+  expect(Recognition.instances).toHaveLength(0);
+  await user.click(screen.getByRole("checkbox"));
+  expect(Recognition.instances).toHaveLength(1);
+  expect(screen.getByRole("status")).toHaveTextContent("Micrófono activo");
+  await act(async () => {
+    await controller.stop();
+  });
+  expect(Recognition.instances[0]?.abort).toHaveBeenCalledOnce();
+  expect(screen.getByRole("checkbox")).not.toBeChecked();
+  expect(Recognition.instances).toHaveLength(1);
+});
diff --git a/vocero-frontend/src/components/WakeWordControl.tsx b/vocero-frontend/src/components/WakeWordControl.tsx
new file mode 100644
index 0000000..f75a28d
--- /dev/null
+++ b/vocero-frontend/src/components/WakeWordControl.tsx
@@ -0,0 +1,32 @@
+import { useWakeWord } from "../hooks/use-wake-word";
+import type { VoiceController } from "../realtime/controller";
+
+export function WakeWordControl({ enabled, controller }: { enabled: boolean; controller: VoiceController }) {
+  const status = useWakeWord(enabled, controller);
+  if (status === "unsupported") {
+    return null;
+  }
+  return (
+    <div className="wake-word-control">
+      <label>
+        <input
+          type="checkbox"
+          checked={enabled}
+          onChange={(event) => {
+            controller.setWakeWordEnabled(event.target.checked);
+          }}
+        />
+        Activar con «hola vocero»
+      </label>
+      <span role="status">
+        {status === "listening"
+          ? "Micrófono activo: escuchando la frase de activación."
+          : status === "blocked"
+            ? "No se pudo activar. Revisa el permiso del micrófono y vuelve a marcar la opción."
+            : status === "starting"
+              ? "Preparando activación por voz…"
+              : "Opcional. Se desactiva al detener la conversación."}
+      </span>
+    </div>
+  );
+}
diff --git a/vocero-frontend/src/hooks/use-media-query.ts b/vocero-frontend/src/hooks/use-media-query.ts
new file mode 100644
index 0000000..446f1de
--- /dev/null
+++ b/vocero-frontend/src/hooks/use-media-query.ts
@@ -0,0 +1,15 @@
+import { useCallback, useMemo, useSyncExternalStore } from "react";
+
+export function useMediaQuery(query: string) {
+  const media = useMemo(() => window.matchMedia(query), [query]);
+  const subscribe = useCallback(
+    (listener: () => void) => {
+      media.addEventListener("change", listener);
+      return () => {
+        media.removeEventListener("change", listener);
+      };
+    },
+    [media],
+  );
+  return useSyncExternalStore(subscribe, () => media.matches);
+}
diff --git a/vocero-frontend/src/hooks/use-wake-word.ts b/vocero-frontend/src/hooks/use-wake-word.ts
index 8a2adc2..265716d 100644
--- a/vocero-frontend/src/hooks/use-wake-word.ts
+++ b/vocero-frontend/src/hooks/use-wake-word.ts
@@ -1,4 +1,4 @@
-import { useEffect } from "react";
+import { useEffect, useState } from "react";
 
 import type { VoiceController } from "../realtime/controller";
 
@@ -9,6 +9,7 @@ interface Recognition {
   onresult: ((event: { resultIndex: number; results: ArrayLike<ArrayLike<{ transcript: string }>> }) => void) | null;
   onerror: ((event: { error: string }) => void) | null;
   onend: (() => void) | null;
+  onstart: (() => void) | null;
   start: () => void;
   abort: () => void;
 }
@@ -20,6 +21,8 @@ declare global {
 }
 /** Optional browser wake word; never owns the microphone during a voice session. */
 export function useWakeWord(enabled: boolean, controller: VoiceController) {
+  const [status, setStatus] = useState<"starting" | "listening" | "blocked">("starting");
+  const supported = !!(window.SpeechRecognition ?? window.webkitSpeechRecognition);
   useEffect(() => {
     const Constructor = window.SpeechRecognition ?? window.webkitSpeechRecognition;
     if (!enabled || !Constructor) {
@@ -36,10 +39,14 @@ export function useWakeWord(enabled: boolean, controller: VoiceController) {
         try {
           recognition.start();
         } catch {
-          /* A browser may require a click first. */
+          stopped = true;
+          setStatus("blocked");
         }
       }
     };
+    recognition.onstart = () => {
+      setStatus("listening");
+    };
     recognition.onresult = (event) => {
       for (let index = event.resultIndex; index < event.results.length; index++) {
         const text =
@@ -58,10 +65,12 @@ export function useWakeWord(enabled: boolean, controller: VoiceController) {
     recognition.onerror = (event) => {
       if (["not-allowed", "service-not-allowed", "audio-capture"].includes(event.error)) {
         stopped = true;
+        setStatus("blocked");
       }
     };
     recognition.onend = () => {
       if (!stopped) {
+        setStatus("starting");
         timer = setTimeout(start, 1000);
       }
     };
@@ -72,7 +81,9 @@ export function useWakeWord(enabled: boolean, controller: VoiceController) {
       recognition.onresult = null;
       recognition.onerror = null;
       recognition.onend = null;
+      recognition.onstart = null;
       recognition.abort();
     };
   }, [enabled, controller]);
+  return !supported ? "unsupported" : !enabled ? "off" : status;
 }
diff --git a/vocero-frontend/src/realtime/controller.ts b/vocero-frontend/src/realtime/controller.ts
index 4c6ef3a..f3ce2a5 100644
--- a/vocero-frontend/src/realtime/controller.ts
+++ b/vocero-frontend/src/realtime/controller.ts
@@ -57,6 +57,7 @@ export interface AppState {
   queuePosition: number;
   joinDeadline: number;
   unlock: boolean;
+  wakeWordEnabled: boolean;
 }
 
 /** Observable application state; React owns rendering, this object owns session lifetime. */
@@ -103,6 +104,7 @@ export class VoiceController {
       queuePosition: 0,
       joinDeadline: 0,
       unlock: false,
+      wakeWordEnabled: false,
     };
   }
   getSnapshot = () => this.state;
@@ -261,6 +263,12 @@ export class VoiceController {
   dismissError() {
     this.update({ error: "" });
   }
+  dismissUnlock() {
+    this.update({ unlock: false });
+  }
+  setWakeWordEnabled(wakeWordEnabled: boolean) {
+    this.update({ wakeWordEnabled });
+  }
   offerAutoStart() {
     if (this.autoStarted || this.client || !this.state.configReady || this.state.contextLoading) {
       return;
@@ -608,6 +616,7 @@ export class VoiceController {
     this.updateLevel(0);
     this.update({
       status,
+      wakeWordEnabled: false,
       muted: false,
       joinDeadline: 0,
       unlock: false,
diff --git a/vocero-frontend/src/styles.css b/vocero-frontend/src/styles.css
index 0c5a5e7..d3b75ef 100644
--- a/vocero-frontend/src/styles.css
+++ b/vocero-frontend/src/styles.css
@@ -65,16 +65,6 @@
     font-size: 13px;
     background: var(--bg-elev);
   }
-  .talk-unlocker {
-    border: 0;
-    width: 100%;
-    color: inherit;
-    font: inherit;
-    cursor: pointer;
-  }
-  .talk-unlocker-hint > span {
-    display: block;
-  }
   .agent-tool-item {
     padding: 12px 0;
     border-bottom: 1px solid var(--border);
@@ -88,28 +78,53 @@
   .queue-actions .circle-subcaption {
     flex-basis: 100%;
   }
-  .reports-sidebar-backdrop {
-    border: 0;
+  .reports-panel {
+    position: fixed;
+    inset: 0 auto 0 0;
+    width: 320px;
+    overflow-y: auto;
+    box-sizing: border-box;
+    padding: 20px;
+    background: var(--bg-elev);
+    border-right: 1px solid var(--border);
+    z-index: 3;
+  }
+  .reports-panel h2 {
+    margin: 0 0 16px;
+    font-size: 18px;
+  }
+  .reports-drawer.modal {
+    margin: 0;
+    width: min(360px, 92vw);
+    max-height: 100dvh;
+    height: 100dvh;
+    border-radius: 0;
+  }
+  .reports-content .reports-hint {
+    margin: 0;
+    max-height: none;
+    padding: 12px;
+  }
+  .wake-word-control {
+    display: grid;
+    gap: 4px;
+    padding: 0 16px 12px;
+    text-align: center;
+    font-size: 13px;
+  }
+  .wake-word-control label {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 8px;
     cursor: pointer;
-    visibility: hidden;
   }
-  .reports-sidebar-inner {
-    visibility: hidden;
+  .wake-word-control span {
+    font-size: 12px;
+    color: var(--text-dim);
   }
-  .reports-sidebar {
-    pointer-events: none;
-  }
-  .reports-sidebar.open .reports-sidebar-inner,
-  .reports-sidebar.open .reports-sidebar-backdrop {
-    visibility: visible;
-  }
-  @media (min-width: 1024px) {
-    #reports-sidebar-close {
-      display: none;
-    }
-    .reports-sidebar-inner {
-      visibility: visible;
-    }
+  html[data-theme="white"] .wake-word-control span {
+    color: #64748b;
   }
   .bubble-body {
     max-height: 240px;
diff --git a/vocero-frontend/src/test/setup.ts b/vocero-frontend/src/test/setup.ts
index 6ef6ff1..8a45d10 100644
--- a/vocero-frontend/src/test/setup.ts
+++ b/vocero-frontend/src/test/setup.ts
@@ -3,6 +3,16 @@ import "@testing-library/jest-dom/vitest";
 import { cleanup } from "@testing-library/react";
 import { afterEach } from "vitest";
 
+Object.defineProperty(window, "matchMedia", {
+  writable: true,
+  value: (media: string) => ({
+    media,
+    matches: false,
+    addEventListener: () => undefined,
+    removeEventListener: () => undefined,
+  }),
+});
+
 // jsdom has no native modal top layer; real focus/inert behavior is checked in Chromium.
 Object.defineProperties(HTMLDialogElement.prototype, {
   showModal: {