diff --git a/.env.example b/.env.example
index 2818d15..acd2984 100644
--- a/.env.example
+++ b/.env.example
@@ -54,6 +54,13 @@ VNC_PASSWORD=javis123
 # Auto-opened page in the in-container Chrome.
 CHROME_START_URL=about:blank
 
+# ---------------------------------------------------------------------------
+# Screen-share + browser mode.
+#   true  = the bot may go Live (screen-share the VNC desktop) and drive the
+#           on-screen browser for real-time info (search / play / read screen).
+#   false = no screen share; voice only, real-time info via API/MCP tools.
+STREAM_BROWSER=true
+
 # ---------------------------------------------------------------------------
 # VNC screen broadcast
 #   selfbot    = real live "Go Live" stream (needs a USER/burner token; ToS risk)
@@ -91,20 +98,6 @@ NOVNC_URL=
 # --- screenshot backend ---
 SCREENSHOT_INTERVAL_SEC=5
 
-# --- stream-test scripts (manual broadcast verification) ---
-# Chrome remote-debugging port the scenario/helper attach to.
-CDP_PORT=9222
-# How long stream-hold.ts keeps the Go-Live up before auto-stopping (ms, 2h).
-HOLD_MS=7200000
-# scenario.mjs inputs: fixed concert clip + search queries.
-TEST_VIDEO_ID=X_am71G6Vy4
-TEST_YT_QUERY=내손을잡아
-TEST_NAVER_QUERY=아이유
-# Set MV_QUERY to auto-pick the first >=60fps search result instead of the clip.
-MV_QUERY=
-# Windowed/fullscreen watch duration per step (seconds).
-WATCH_SECONDS=20
-
 # ---------------------------------------------------------------------------
 # Voice behaviour
 # ---------------------------------------------------------------------------
diff --git a/bot/scripts/stream-test/broadcast-helper.mjs b/bot/scripts/stream-test/broadcast-helper.mjs
index 6209f7c..1312176 100644
--- a/bot/scripts/stream-test/broadcast-helper.mjs
+++ b/bot/scripts/stream-test/broadcast-helper.mjs
@@ -91,8 +91,37 @@ async function session() {
   const ctx = b.contexts()[0];
   for (const p of ctx.pages()) await arm(p);
   ctx.on('page', arm);                                     // new tabs
+
+  // Broadcast-wide: when any tab enters HTML5 fullscreen (a video 'f'), hide
+  // Chrome's toolbar by putting the WINDOW into Chrome-initiated fullscreen -
+  // xfwm4 won't hide it on HTML5 fullscreen alone, so the address bar would
+  // otherwise show on the broadcast. Restore when fullscreen exits.
+  let winFs = false;
+  const cdp = await b.newBrowserCDPSession();
+  const setWindowFs = async (fs) => {
+    try {
+      const { targetInfos } = await cdp.send('Target.getTargets');
+      const t = targetInfos.find((x) => x.type === 'page' && x.url.startsWith('http'));
+      if (!t) return;
+      const { windowId } = await cdp.send('Browser.getWindowForTarget', { targetId: t.targetId });
+      await cdp.send('Browser.setWindowBounds', { windowId, bounds: { windowState: fs ? 'fullscreen' : 'normal' } });
+      winFs = fs;
+    } catch { /* best-effort */ }
+  };
+  const fsTimer = setInterval(async () => {
+    try {
+      let anyFs = false;
+      for (const p of ctx.pages()) {
+        if (await p.evaluate(() => !!document.fullscreenElement).catch(() => false)) { anyFs = true; break; }
+      }
+      if (anyFs && !winFs) await setWindowFs(true);
+      else if (!anyFs && winFs) await setWindowFs(false);
+    } catch { /* best-effort */ }
+  }, 600);
+
   console.log('broadcast-helper armed on', ctx.pages().length, 'tab(s)');
   await new Promise((resolve) => b.on('disconnected', resolve));
+  clearInterval(fsTimer);
 }
 
 // Reconnect across Chrome restarts so the broadcast stays ad-free.
diff --git a/bot/scripts/stream-test/scenario.mjs b/bot/scripts/stream-test/scenario.mjs
index d872308..9ddbacf 100644
--- a/bot/scripts/stream-test/scenario.mjs
+++ b/bot/scripts/stream-test/scenario.mjs
@@ -38,19 +38,6 @@ page.setDefaultTimeout(25000);
 const read = (fn) => page.evaluate(fn);
 const playerLoc = () => page.locator('#movie_player');
 
-// Toggle Chrome-initiated browser fullscreen (hides the toolbar on this WM,
-// which HTML5 'f' fullscreen alone does not). on=true -> fullscreen.
-async function browserFullscreen(on) {
-  try {
-    const sess = await b.newBrowserCDPSession();
-    const { targetInfos } = await sess.send('Target.getTargets');
-    const t = targetInfos.find((x) => x.type === 'page' && x.url.startsWith('http'));
-    if (!t) return;
-    const { windowId } = await sess.send('Browser.getWindowForTarget', { targetId: t.targetId });
-    await sess.send('Browser.setWindowBounds', { windowId, bounds: { windowState: on ? 'fullscreen' : 'normal' } });
-  } catch { /* best-effort */ }
-}
-
 const fpsNow = () => read(() => {
   try { const s = document.getElementById('movie_player').getStatsForNerds(); const m = (s.resolution || '').match(/@(\d+)/); return m ? +m[1] : null; } catch { return null; }
 });
@@ -129,17 +116,16 @@ if ((await auto.count().catch(() => 0)) && (await auto.getAttribute('aria-checke
 }
 console.log('STEP watch-1080-windowed'); await sleep(WATCH_MS);
 
-// 7) fullscreen: hide the browser toolbar (CDP), then the real 'f' key makes the
-// video fill the now toolbar-free screen (innerHeight 1080).
-await browserFullscreen(true); await sleep(800);
+// 7) fullscreen with the real 'f' key. broadcast-helper.mjs detects the HTML5
+// fullscreen and hides Chrome's toolbar (window fullscreen) broadcast-wide, so
+// the address bar stays off the stream.
 await humanHover(page, playerLoc());
-await humanKey('f'); await sleep(1500);
-if (!(await read(() => !!document.fullscreenElement))) { await humanHover(page, playerLoc()); await humanKey('f'); await sleep(1200); }
+await humanKey('f'); await sleep(1800);
+if (!(await read(() => !!document.fullscreenElement))) { await humanHover(page, playerLoc()); await humanKey('f'); await sleep(1500); }
 console.log('STEP fullscreen', await read(() => ({ full: !!document.fullscreenElement, h: window.innerHeight }))); await sleep(WATCH_MS);
 
-// 8) exit video fullscreen ('f'), then restore the browser toolbar
+// 8) exit video fullscreen ('f'); the helper restores the toolbar
 await humanKey('f'); await sleep(1500);
-await browserFullscreen(false); await sleep(500);
 
 // 9) Naver via the address bar, then really type the query
 await navigateOmnibox('https://www.naver.com'); await sleep(2800);
diff --git a/bot/src/config.ts b/bot/src/config.ts
index 7f2e861..c70c3cc 100644
--- a/bot/src/config.ts
+++ b/bot/src/config.ts
@@ -47,6 +47,10 @@ export const config = {
   // STREAM_AUDIO=0 to mute; STREAM_AUDIO_SOURCE overrides the capture source.
   streamAudio: opt("STREAM_AUDIO", "1") !== "0",
   streamAudioSource: opt("STREAM_AUDIO_SOURCE", "@DEFAULT_MONITOR@"),
+  // Screen-share + browser mode. true = the bot may go Live (Go-Live screen
+  // share of the VNC desktop) and drive the on-screen browser for real-time
+  // info. false = no screen share; use voice + API/MCP tools for info only.
+  screenBrowser: opt("STREAM_BROWSER", "true") !== "false",
 
   // novnc backend
   novncUrl: opt("NOVNC_URL", ""),
diff --git a/bot/src/index.ts b/bot/src/index.ts
index 9ecf9c7..8daf65c 100644
--- a/bot/src/index.ts
+++ b/bot/src/index.ts
@@ -111,6 +111,11 @@ async function handleStream(i: ChatInputCommandInteraction) {
       }
     },
   };
+  if (!config.screenBrowser) {
+    return i.editReply(
+      "화면 공유(브라우저) 모드가 꺼져 있습니다 (STREAM_BROWSER=false). 음성 + API/MCP 모드로만 동작합니다.",
+    );
+  }
   if (config.streamBackend === "selfbot" && !ctx.voiceChannelId) {
     return i.editReply("셀프봇 송출은 음성 채널 안에서 호출해야 합니다. 음성 채널에 들어간 뒤 다시 시도하세요.");
   }