From 408bcaaf8a4a6f17762db6aaacf6458d956a8bc1 Mon Sep 17 00:00:00 2001
From: "russell@unturf.com" <russell@unturf.com>
Date: Wed, 3 Jun 2026 12:29:51 -0400
Subject: [PATCH] =?UTF-8?q?zebra-report:=20deploy=20=E2=80=94=20drop=20res?=
 =?UTF-8?q?ume=20banner;=20richer=20picker=20hints?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 zebra-report/zebra-spaces.html | 58 +++++++++-------------------------
 1 file changed, 15 insertions(+), 43 deletions(-)

diff --git a/zebra-report/zebra-spaces.html b/zebra-report/zebra-spaces.html
index 8939a2c..dcf8661 100644
--- a/zebra-report/zebra-spaces.html
+++ b/zebra-report/zebra-spaces.html
@@ -731,12 +731,6 @@ try {
     <select id="camera-select" title="camera device — applies on next start"><option value="">default camera</option></select>
   </div>
 </section>
-<section id="sec-screen-resume" class="hidden">
-  <div class="notice-banner warn">
-    <span>you were sharing your screen before this refresh — tap to resume (browsers need a fresh click to grant screen capture)</span>
-    <button id="btn-screen-resume" class="small invert">resume screen share</button>
-  </div>
-</section>
 
 <section id="sec-listener-actions" class="hidden">
   <h2>your hand</h2>
@@ -1292,14 +1286,13 @@ const THEME_KEY      = 'zebra-theme-v1';
  * hard refresh auto-rejoins. Different tabs can sit in different
  * spaces because sessionStorage doesn't bleed across tabs. */
 const ACTIVE_CALL_KEY = 'zebra-spaces-active-call-v1';
+/* screen-share state is deliberately NOT tracked across reload. Even
+ * with a click banner the user has to re-pick the surface (browser
+ * security: getDisplayMedia always shows the picker; selection cannot
+ * be remembered across a reload). A re-pick is the same friction as
+ * just clicking 'share screen' again, so we keep the single canonical
+ * button instead of adding a banner that adds zero net clicks. */
 const ACTIVE_CAM_KEY = 'zebra-spaces-active-cam-v1';
-/* screen-share resume — getDisplayMedia REQUIRES a fresh user gesture
- * (Chrome / Firefox block silent triggers after a hard refresh), so
- * unlike the camera we can't just re-acquire silently on welcome.
- * Instead we surface a one-click resume banner if the user was sharing
- * before the refresh — the click IS the gesture and counts toward the
- * getDisplayMedia call inside the same task. */
-const ACTIVE_SCREEN_KEY = 'zebra-spaces-active-screen-v1';
 /* mute state for the current tab — '1' means muted. Survives a hard
  * refresh via sessionStorage so the page reconnects in the same state
  * the user last set. Cleared on explicit leave. NOT cleared on role
@@ -2127,7 +2120,13 @@ async function sfuPublishScreen(){
     stream = await navigator.mediaDevices.getDisplayMedia({
       video: { width:{ideal:1920}, height:{ideal:1080}, frameRate:{ideal:30} },
       audio: { echoCancellation:false, noiseSuppression:false, autoGainControl:false,
-               channelCount:2, sampleRate:48000 }
+               channelCount:2, sampleRate:48000 },
+      /* picker UX hints. Chrome respects these — biases toward the
+       * previously-shared surface family and shows tab audio toggle by
+       * default. Firefox / Safari currently ignore them. */
+      surfaceSwitching: 'include',
+      selfBrowserSurface: 'include',
+      systemAudio: 'include',
     });
   } catch(e){ logLine('err','screen share cancelled: '+e.message); return; }
   sfuScreenStream = stream;
@@ -2188,8 +2187,6 @@ async function sfuPublishScreen(){
   renderScreenTile(myKeys.pubHex, stream, { local: true });
   $('btn-screen-share').classList.add('hidden');
   $('btn-screen-stop').classList.remove('hidden');
-  try { sessionStorage.setItem(ACTIVE_SCREEN_KEY, '1'); } catch(_){}
-  $('sec-screen-resume').classList.add('hidden');
 }
 async function sfuUnpublishScreen(){
   if (!sfuScreenPC && !sfuScreenStream) return;
@@ -2202,8 +2199,6 @@ async function sfuUnpublishScreen(){
   }
   $('btn-screen-share').classList.remove('hidden');
   $('btn-screen-stop').classList.add('hidden');
-  try { sessionStorage.removeItem(ACTIVE_SCREEN_KEY); } catch(_){}
-  $('sec-screen-resume').classList.add('hidden');
   logLine('', 'screen share stopped');
 }
 
@@ -3011,20 +3006,8 @@ async function handleSignal(raw){
             });
           }, 250);
         }
-        /* screen — getDisplayMedia requires a fresh user gesture per
-         * browser security policy, so we surface a one-click resume
-         * banner instead. The click IS the gesture. */
-        let wantScreen = false;
-        try { wantScreen = sessionStorage.getItem(ACTIVE_SCREEN_KEY) === '1'; } catch(_){}
-        if (wantScreen){
-          $('sec-screen-resume').classList.remove('hidden');
-        } else {
-          $('sec-screen-resume').classList.add('hidden');
-        }
       } else {
         try { sessionStorage.removeItem(ACTIVE_CAM_KEY); } catch(_){}
-        try { sessionStorage.removeItem(ACTIVE_SCREEN_KEY); } catch(_){}
-        $('sec-screen-resume').classList.add('hidden');
       }
       renderShareUrl();
       onRoleEntered();
@@ -3514,17 +3497,6 @@ function renderRoom(){
 $('btn-raise').addEventListener('click', () => { send({ type:'raise-hand' }); });
 $('btn-lower').addEventListener('click', () => { send({ type:'lower-hand' }); });
 $('btn-screen-share').addEventListener('click', () => { logLine('', 'click: btn-screen-share'); sfuPublishScreen().catch(e => logLine('err','screen share: '+e.message)); });
-$('btn-screen-resume').addEventListener('click', () => {
-  /* The user gesture from this click is what unlocks getDisplayMedia
-   * after a refresh — chained directly into sfuPublishScreen so the
-   * browser counts it toward the same task. */
-  logLine('', 'click: btn-screen-resume');
-  sfuPublishScreen().catch(e => {
-    logLine('err', 'screen resume: ' + e.message);
-    try { sessionStorage.removeItem(ACTIVE_SCREEN_KEY); } catch(_){}
-    $('sec-screen-resume').classList.add('hidden');
-  });
-});
 $('btn-screen-stop').addEventListener('click', () => {
   /* click telemetry — the 'screen share stopped' line lower in
    * sfuUnpublishScreen only fires AFTER the early-return, so logging
@@ -3943,8 +3915,8 @@ logLine('', 'ready — pick a handle, type a rendezvous code, enter the space');
 
 <footer style="margin:2.2rem auto 0;font-size:0.65rem;color:#999;line-height:1.7;word-break:break-all;font-family:monospace">
   <span id="pi-seal" style="color:#777;cursor:default;user-select:none" title="">page integrity</span> &nbsp;·&nbsp; built <span class="stamp-date">2026-06-03</span><br>
-  md5 <span class="stamp-md5">2439f48e2bbd34e36b34209e29d631df</span><br>
-  sha256 <span class="stamp-sha">afb06260b27c0e1d2a0b76b228c3b7af5138b826fd6b123100d1ccd4d763543b</span><br>
+  md5 <span class="stamp-md5">66a614bab55cb7b90c288e575177dc4a</span><br>
+  sha256 <span class="stamp-sha">902f6be9372bc22eaa90e50e140efef9222c80ad30c92d093619c6d59a8c20a5</span><br>
   <span style="color:#bbb">hashes are of this page with these two fields zeroed — to verify, blank them and re-hash</span><br>
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