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+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>Desktop Settings — Prototype 15 (power slide, full-width tuner)</title>
+<link rel="stylesheet" href="desktop-settings-shared.css">
+<style>
+  :root{
+    --ground:#151311; --panel:#100f0f; --well:#0a0c0d; --raise:#1a1917;
+    --silver:#bfc4d0; --cream:#f3e7c5; --steel:#969385; --dim:#7c838a;
+    --slate:#424f5e; --slate-hi:#54677d; --wash:#2c2f32;
+    --pass:#74932f; --fail:#cb6b4d;
+    --phos:#7fe0a0; --phos-dim:#1c3626; --vfd:#63e6c8;
+    --sevgrn:#57d357; --sevred:#e2543f; --sevoff:#1a1613;
+    --jewel-r:#ff5b45; --jewel-a:#ffb43a; --jewel-g:#6fce33;
+    --gold:#e2a038; --gold-hi:#ffbe54;
+    --amber-grad-top:#f2c76a; --amber-grad-mid:#d29638; --amber-grad-bot:#8f671f;
+    --amber-edge:#7d5c16; --amber-warn:#f0b552;
+    --glow-hi:255,190,84; --glow-lo:226,160,56;
+    --mono:"BerkeleyMono Nerd Font","Berkeley Mono",monospace;
+    --pulse-rate:1s;
+  }
+  .plate {
+    background:
+      repeating-linear-gradient(90deg, #ffffff05 0 1px, transparent 1px 3px),
+      linear-gradient(180deg, #1d1a16, #141210);
+    border: 1px solid #262320;
+    border-radius: 10px;
+    padding: 10px;
+  }
+  .row { display: flex; justify-content: center; align-items: center; gap: 10px; flex-wrap: wrap; }
+  .cellcap { color: var(--steel); font-size: 8.5px; letter-spacing: 0.14em; text-align: center; margin-top: 2px; text-transform: uppercase; }
+  .vcell { display: flex; flex-direction: column; align-items: center; }
+  .khost { display: flex; justify-content: center; }
+  .tcell { position: relative; }
+  .bat-oly { position: absolute; top: -8px; right: -10px; }
+  .bat-oly svg { width: 54px; height: 69px; }
+
+  /* top block: presets over the tuner, compact chicken-head upper right */
+  .topgrid { display: flex; gap: 8px; align-items: stretch; }
+  .topleft { flex: 1; display: flex; flex-direction: column; gap: 8px; }
+  .topright { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; }
+  .tuner-well { display: flex; justify-content: center; }
+
+  .presets { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 5px; }
+  .preset {
+    background-image: linear-gradient(180deg, var(--raise), #131110);
+    border: 1px solid #33302b; border-bottom-width: 3px; border-radius: 6px;
+    padding: 4px 1px; text-align: center; cursor: pointer; color: var(--silver);
+    overflow: hidden;
+  }
+  .preset:hover { border-color: var(--gold); color: var(--gold); }
+  .preset .num { font-size: 7.5px; color: var(--dim); display: block; letter-spacing: 0; }
+  .preset .nm { font-size: 8.5px; letter-spacing: 0; display: block; }
+  .preset.cur {
+    border-color: var(--gold); border-bottom-width: 1px; transform: translateY(2px);
+    background-image: linear-gradient(180deg, #2a2618, #1d1a12); color: var(--cream);
+  }
+  .preset.cur .num { color: var(--gold); }
+
+  /* levels + caffeine block: drums left, big timer right */
+  .midgrid { display: flex; gap: 8px; align-items: center; justify-content: center; }
+
+  /* switch wall: six cells, airplane's guarded lever among them */
+  .wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 6px; justify-items: center; align-items: end; }
+
+  .wprow {
+    display: flex; align-items: center; gap: 8px;
+    background-image: linear-gradient(180deg, var(--raise), #131110);
+    border: 1px solid #33302b; border-radius: 8px;
+    padding: 8px 10px; cursor: pointer; color: var(--silver); font-size: 12px;
+  }
+  .wprow:hover { border-color: var(--gold); color: var(--gold); }
+  .wprow .k-state { margin-left: auto; color: var(--dim); font-size: 10px; }
+</style>
+</head>
+<body class="ds-stage">
+  <div class="ds-caption">
+    <b>Prototype 15 — P14 + power slide.</b> The chicken-head is out: the
+    tuner dial is restored to full width, and beneath it a three-position
+    slide switch of equal length carries power — a status lamp per position,
+    labeled PERFORMANCE / BALANCE / POWER SAVE. Everything else as P14.
+  </div>
+
+  <div class="ds-bar"><span>19:24</span><span class="gear">⚙</span></div>
+
+  <div class="ds-panel" id="panel">
+    <div class="ds-face">
+      <span class="glyph">⚙</span>
+      <span class="title">Settings</span>
+      <span class="sub" id="scene-sub"></span>
+      <span class="x">✕</span>
+    </div>
+    <div id="body"></div>
+    <div class="ds-toast" id="toast"></div>
+    <div class="ds-subview" id="subview"></div>
+  </div>
+
+<script src="widgets.js"></script>
+<script src="dupre-kit-additions.js"></script>
+<script src="desktop-settings-shared.js"></script>
+<script>
+const h = DS.h;
+const body = document.getElementById("body");
+const subview = document.getElementById("subview");
+DS.bindToast(document.getElementById("toast"));
+
+const SCENES = Object.keys(DS.SCENES);
+const STOPS = ["OFF", "FOCUS", "PRES", "BATT", "NIGHT"];
+const ROCKERS = [
+  ["autodim", "Auto-dim"], ["touchpad", "Touchpad"], ["mouse", "Mouse"],
+  ["nightlight", "Night light"], ["dnd", "DND"],
+];
+let booting = true;
+let caffMinutes = 0;      // survives re-renders
+let caffHold = false;     // the always-on rocker
+let timerHost = null;     // the timerDial is PERSISTENT: it owns a live
+                          // countdown interval, so re-renders reparent it
+                          // instead of rebuilding (rebuilds leak ghost
+                          // intervals and kill an in-progress wind drag)
+
+const sceneIdx = () => (DS.state.scene ? SCENES.indexOf(DS.state.scene) + 1 : 0);
+const debounce = (fn, ms) => { let t; return (...a) => { clearTimeout(t); t = setTimeout(() => fn(...a), ms); }; };
+
+function openWallpaper() {
+  subview.innerHTML = "";
+  subview.appendChild(DS.wallpaperSubview(() => subview.classList.remove("open")));
+  subview.classList.add("open");
+}
+
+function sceneOff() {
+  DS.state.scene = null;
+  DS.toast("Scene: off", true);
+  render();
+}
+
+// caffeine is on when held-on OR wound; keep DS in sync with that truth.
+// Debounced: the sync triggers a panel re-render, which must not happen
+// mid-wind (it would yank the dial out from under the drag).
+function syncCaffeine(el) {
+  const on = caffHold || caffMinutes > 0;
+  if (!booting && on !== DS.state.caffeine) DS.setToggle("caffeine", el);
+}
+const syncCaffeineSoon = debounce(() => syncCaffeine(timerHost), 450);
+
+function scaleSvg(host, w) {
+  const svg = host.querySelector("svg");
+  const [, , vw, vh] = svg.getAttribute("viewBox").split(" ").map(Number);
+  svg.setAttribute("width", w);
+  svg.setAttribute("height", Math.round(w * vh / vw));
+}
+
+function render() {
+  booting = true;
+  body.innerHTML = "";
+  const col = h("div", "ds-col");
+
+  // ---- top: presets over the tuner; compact chicken-head upper right -----
+  const top = h("div", "plate");
+  const pr = h("div", "presets");
+  SCENES.forEach((n, i) => {
+    const k = h("div", "preset" + (DS.state.scene === n ? " cur" : ""));
+    k.innerHTML = `<span class="num">PRESET ${i + 1}</span><span class="nm">${n}</span>`;
+    k.onclick = () => DS.applyScene(n, k);
+    pr.appendChild(k);
+  });
+  top.appendChild(pr);
+
+  const tw = h("div", "tuner-well");
+  tw.style.marginTop = "8px";
+  DUPRE.slideRule(tw, {
+    values: STOPS,
+    value: STOPS[sceneIdx()],
+    skin: "warm",
+    width: 306,                       // restored to the plate's full width
+    fmt: (v) => v,
+    onChange: (v) => {
+      if (booting) return;
+      if (v === "OFF") sceneOff();
+      else DS.applyScene(SCENES[STOPS.indexOf(v) - 1], tw);
+    },
+  });
+  top.appendChild(tw);
+
+  const pw = h("div", "khost");
+  pw.style.marginTop = "8px";
+  const pIdx = DS.PROFILES.findIndex((p) => p.id === DS.state.powerprofile);
+  DUPRE.slideSelector(pw, {
+    items: ["PERFORMANCE", "BALANCE", "POWER SAVE"],
+    index: pIdx,
+    width: 306,                       // equal to the tuner's length
+    onChange: (i) => { if (!booting && i !== pIdx) DS.setProfile(DS.PROFILES[i].id, pw); },
+  });
+  top.appendChild(pw);
+  col.appendChild(top);
+
+  // ---- middle: drum partners left, larger caffeine timer right ------------
+  col.appendChild(DS.engrave("Levels · Caffeine"));
+  const mid = h("div", "midgrid");
+
+  const dcell = h("div", "vcell");
+  const dhost = h("div", "khost");
+  const commitDrums = debounce((vals) => {
+    const b = Math.max(DS.SLIDERS.brightness.floor, Math.round(vals[0]) * 10);
+    const k = Math.round(vals[1]) * 10;
+    if (b !== DS.state.brightness) DS.setSlider("brightness", b, dcell);
+    if (k !== DS.state.kbd) DS.setSlider("kbd", k, dcell);
+  }, 350);
+  DUPRE.drumRoller(dhost, {
+    title: "LEVELS ×10",
+    channels: [
+      { name: "SCREEN", v: Math.max(1, Math.round(DS.state.brightness / 10)) },
+      { name: "KBD", v: Math.round(DS.state.kbd / 10) },
+    ],
+    min: 0, max: 10,
+    height: 189,   // tall drums; the timer centers against them
+    onChange: (vals) => { if (!booting) commitDrums(vals.slice()); },
+  });
+  dcell.appendChild(dhost);
+  mid.appendChild(dcell);
+
+  const tcell = h("div", "vcell tcell");
+  if (!timerHost) {
+    timerHost = h("div", "khost");
+    DUPRE.timerDial(timerHost, {
+      minutes: caffMinutes,
+      onChange: (min) => {
+        caffMinutes = min;
+        syncCaffeineSoon();
+      },
+    });
+    scaleSvg(timerHost, 178);
+    // the bat toggle takes the winding arrow's corner
+    const svg = timerHost.querySelector("svg");
+    [...svg.querySelectorAll("path")].find((p) => p.getAttribute("d").startsWith("M 122 14"))?.remove();
+    [...svg.querySelectorAll("polygon")].find((p) => p.getAttribute("points").startsWith("136,26"))?.remove();
+  }
+  tcell.appendChild(timerHost);
+  const batHost = h("div", "bat-oly");
+  DUPRE.batToggle(batHost, {
+    on: !caffHold,                     // up = TIMED, down = HOLD
+    onLabel: "TIMED",
+    offLabel: "HOLD",
+    onChange: (on) => {
+      if (booting) return;
+      caffHold = !on;
+      syncCaffeine(batHost);
+    },
+  });
+  tcell.appendChild(batHost);
+  mid.appendChild(tcell);
+  col.appendChild(mid);
+
+  // ---- switch wall: five rockers + the guarded airplane lever -------------
+  col.appendChild(DS.engrave("Switches"));
+  const wall = h("div", "wall");
+  ROCKERS.forEach(([k, name]) => {
+    const cell = h("div", "vcell");
+    const host = h("div", "khost");
+    DUPRE.rocker(host, {
+      on: DS.state[k],
+      onChange: (on) => { if (!booting && on !== DS.state[k]) DS.setToggle(k, cell); },
+    });
+    cell.appendChild(host);
+    cell.appendChild(h("div", "cellcap", name));
+    wall.appendChild(cell);
+  });
+  if (DS.state.laptop) {
+    const cell = h("div", "vcell");
+    const host = h("div", "khost");
+    DUPRE.guardedToggle(host, {
+      on: DS.state.airplane,
+      onLabel: "AIRPLANE",
+      offLabel: "RADIO OK",
+      onChange: (on) => { if (!booting && on !== DS.state.airplane) DS.setToggle("airplane", cell); },
+    });
+    scaleSvg(host, 72);
+    cell.appendChild(host);
+    wall.appendChild(cell);
+  }
+  col.appendChild(wall);
+
+  // ---- wallpaper: where it was -------------------------------------------
+  const wp = h("div", "wprow");
+  wp.innerHTML = `<span>\u{f021c}</span><span>Wallpaper</span><span class="k-state">manage ›</span>`;
+  wp.onclick = openWallpaper;
+  col.appendChild(wp);
+
+  body.appendChild(col);
+  document.getElementById("scene-sub").textContent = DS.state.scene ? "▶ " + DS.state.scene : "";
+  booting = false;
+}
+
+DS.onChange(render);
+render();
+</script>
+</body>
+</html>