zebra-spaces: remove per-speaker stream toggle UI — adaptive worklet covers it

Fox 2026-06-05: "since we have this now there is no reason to have the
stream button anymore on the ux."

The ○/◉ button next to each row was the self-listener entry point
(speaker flips themselves onto the buffered HTTP Ogg/Opus path when
WebRTC was glitchy). With the adaptive worklet — predictive drain
detector, self-calibrating floor, ±6% time-stretching — the same
glitch-recovery happens automatically without user intervention.

Removed:
- 'strm' grid column from .member layout (back to 4 columns)
- .stream-toggle CSS rules (button styling, dark-mode variants)
- The button render block in renderRoom (per-uuid streamEl creation)
- row.appendChild(streamEl) and its preceding comment
- The unwired dead toggleStreamFor(uuid, pubHex) helper function

Kept (still useful):
- streamMode Set + startStream() + stopStream() — used by the global
  self-listener FSM
- selfListenerMode and its observer
- The HTTP /stream lip-sync override (httpLipSyncOverride)
- Double Dragon's manual-on/manual-off states + ddNoteManualToggle
  (no UI surface but the plumbing stays for future re-introduction
  if needed)

Layout is back to badge|handle/pub/acts|mic|meter — one fewer column,
slightly more breathing room per row.

web/zebra-spaces.html

@@ -484,15 +484,15 @@
    * the pubkey, never wrap a handle mid-word. */
   .member {
     display: grid;
-    /* extra 1.4rem column for the per-speaker stream toggle — lives on the
-     * top row next to the mic icon so it never wraps + never adds row
-     * height (the original 3-row layout is preserved). Single-char button
-     * (○ / ◉) keeps the column tight. */
-    grid-template-columns: 5.5rem minmax(0, 1fr) 1.4rem 1.4rem 5rem;
+    /* 4 columns: badge, handle/pub/acts, mic, meter. The per-speaker
+     * stream toggle column ('strm') was removed 2026-06-05 — the
+     * adaptive worklet handles wiggle absorption automatically, no
+     * manual buffered-HTTP fallback button needed. */
+    grid-template-columns: 5.5rem minmax(0, 1fr) 1.4rem 5rem;
     grid-template-areas:
-      "badge handle mic   strm  meter"
-      "badge pub    pub   pub   pub"
-      "badge acts   acts  acts  acts";
+      "badge handle mic   meter"
+      "badge pub    pub   pub"
+      "badge acts   acts  acts";
     align-items: center; gap: 0.35rem 0.55rem; padding: 0.35rem 0;
     border-bottom: 1px dotted #ccc; font-size: 0.85rem;
   }
@@ -500,19 +500,8 @@
   .member > .handle        { grid-area: handle; }
   .member > .pub-short     { grid-area: pub; }
   .member > .mic           { grid-area: mic; }
-  .member > .stream-toggle { grid-area: strm; justify-self: center; }
   .member > .meter         { grid-area: meter; }
   .member > .mod-actions   { grid-area: acts; }
-  /* single-char stream toggle: ○ when off, ◉ when on. Keep the button
-   * compact so it fits the 1.4rem column without forcing the row taller. */
-  .stream-toggle {
-    font-size: 0.95rem; line-height: 1; padding: 0.1rem 0.3rem;
-    background: transparent; border: 1px solid #888; cursor: pointer;
-    color: inherit;
-  }
-  .stream-toggle.on { background: #000; color: #fff; border-color: #000; }
-  html.theme-dark .stream-toggle { border-color: #aaa; }
-  html.theme-dark .stream-toggle.on { background: #fff; color: #000; border-color: #fff; }
   .member:last-child { border-bottom: none; }
   .badge {
     font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em;
@@ -5950,18 +5939,6 @@ function stopStream(uuid){
     }
   } catch(_){}
 }
-function toggleStreamFor(uuid, pubHex){
-  if (streamMode.has(pubHex)){
-    streamMode.delete(pubHex);
-    stopStream(uuid);
-    ddNoteManualToggle(pubHex, false);
-  } else {
-    streamMode.add(pubHex);
-    startStream(uuid, pubHex);
-    ddNoteManualToggle(pubHex, true);
-  }
-  renderRoom();
-}
 
 /* selfListenerMode — a speaker/cohost/host who wants to consume the
  * room via the buffered HTTP Ogg/Opus path instead of the live WebRTC
@@ -6147,22 +6124,11 @@ function renderRoom(){
      * every speaker row grow a third sub-row of mod-actions even for
      * non-mods (just-self-monitor self-rows), which fox flagged as
      * causing vertical scroll. Single-char glyph keeps the column 1.4rem. */
-    let streamEl = null;
-    /* Per-row stream toggle. The ONLY row that gets one is SELF — and
-     * only when we can speak (host/cohost/speaker). The button flips
-     * THIS viewer's whole audio path from the live WebRTC mesh to the
-     * buffered HTTP Ogg/Opus broadcast tap (the listener-quality
-     * stream). selfListenerMode is global, so the ◉/○ glyph reflects
-     * that flag rather than streamMode of any single pubHex. */
-    if (canSpeak(m.role) && m.uuid === myUUID && canSpeak(myRole)){
-      streamEl = document.createElement('button');
-      streamEl.className = 'stream-toggle' + (selfListenerMode ? ' on' : '');
-      streamEl.textContent = selfListenerMode ? '◉' : '○';
-      streamEl.title = selfListenerMode
-        ? 'listening on the buffered HTTP stream — click to rejoin the live WebRTC mesh (also unmutes is via the mic button)'
-        : 'switch yourself to the listener stream (buffered, ~2s behind) — auto-mutes your mic';
-      streamEl.onclick = () => roomMachines.selfListener.send('TOGGLE');
-    }
+    /* The per-row stream toggle (○/◉ for self-listener mode) was
+     * removed 2026-06-05. The adaptive worklet with predictive
+     * grow + self-calibrating floor now absorbs wiggles
+     * automatically; there's no scenario where a user needs to
+     * manually flip onto the buffered HTTP path. */
     if (isMod(myRole) && m.uuid !== myUUID){
       if (m.role === 'listener'){
         const b = document.createElement('button'); b.className='small invert';
@@ -6215,11 +6181,6 @@ function renderRoom(){
     acts.appendChild(actsRemoval);
     row.appendChild(badge); row.appendChild(handle); row.appendChild(pub);
     row.appendChild(micEl);
-    /* stream toggle (when rendered) goes between mic and meter so it
-     * lands in the `strm` grid column on the top row. If absent the
-     * column collapses to its 1.4rem track width (small whitespace
-     * gap, no row-height change). */
-    if (streamEl) row.appendChild(streamEl);
     row.appendChild(meter); row.appendChild(acts);
     wrap.appendChild(row);
   }
@@ -6887,8 +6848,8 @@ logLine('', 'ready — pick a handle, type a rendezvous code, enter the space');
 
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