diff --git a/web/mobile/index.html b/web/mobile/index.html
index 554b2c5..d5fde78 100644
--- a/web/mobile/index.html
+++ b/web/mobile/index.html
@@ -13,7 +13,10 @@
      只读展示：工艺四状态 / KPI / 告警；交接班摘要按 handover_brief 章节渲染。 -->
 <header id="topbar">
   <h1 id="page-title">iAOP 移动驾驶舱</h1>
-  <span id="ro-badge">只读</span>
+  <div>
+    <button id="btn-refresh" class="ghost-btn">刷新</button>
+    <span id="ro-badge">只读</span>
+  </div>
 </header>
 
 <!-- 只读驾驶舱视图 -->
diff --git a/web/mobile/mobile.css b/web/mobile/mobile.css
index 93b05a7..a513478 100644
--- a/web/mobile/mobile.css
+++ b/web/mobile/mobile.css
@@ -18,7 +18,9 @@ body { margin: 0; font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
           position: sticky; top: 0; z-index: 2; }
 #topbar h1 { font-size: 17px; margin: 0; color: var(--cockpit-accent); }
 #ro-badge { font-size: 11px; color: var(--cockpit-warn); border: 1px solid var(--cockpit-warn);
-            border-radius: 10px; padding: 2px 8px; }
+            border-radius: 10px; padding: 2px 8px; margin-left: 8px; }
+.ghost-btn { background: none; border: 1px solid var(--cockpit-grid-line); border-radius: 8px;
+             color: var(--cockpit-accent); font-size: 12px; padding: 4px 10px; cursor: pointer; }
 
 .view { display: none; padding: 10px 12px; }
 .view.active { display: block; }
diff --git a/web/mobile/mobile.js b/web/mobile/mobile.js
index fda9176..dee01ac 100644
--- a/web/mobile/mobile.js
+++ b/web/mobile/mobile.js
@@ -71,7 +71,8 @@ function renderMobileCockpit(plan) {
   kpiBox.innerHTML = "";
   plan.widgets.forEach(function (w) {
     if (w.type !== "kpi_card") return;
-    var rnd = seededRandom(w.props.metric || "");
+    // 30s 时间桶入种子：刷新/定时重渲染时数值滚动（接真实总线后替换）
+    var rnd = seededRandom((w.props.metric || "") + "|" + Math.floor(Date.now() / 30000));
     var card = el("div", "kpi");
     card.appendChild(el("div", "v", (60 + rnd() * 40).toFixed(2)));
     card.appendChild(el("div", "l", w.props.label || w.props.metric));
@@ -231,11 +232,16 @@ function generateBrief() {
   fetch(ALARM_PLAN_URL).then(function (r) { return r.ok ? r.json() : null; })
     .then(function (p) { if (p && p.severityStyles) severityStyles = p.severityStyles; })
     .catch(function () {});
-  fetch(PLAN_URL).then(function (r) { return r.json(); })
-    .then(renderMobileCockpit)
-    .catch(function (e) {
-      document.getElementById("m-stages").innerHTML = "";
-      document.getElementById("m-stages").appendChild(
-        el("div", "hint", "布局资产加载失败：" + e.message + "（请从 web/ 根目录起服务）"));
-    });
+  // issue #157：只读数据手动刷新（重新加载布局资产并重渲染 KPI/告警）
+  function loadPlan() {
+    fetch(PLAN_URL).then(function (r) { return r.json(); })
+      .then(renderMobileCockpit)
+      .catch(function (e) {
+        document.getElementById("m-stages").innerHTML = "";
+        document.getElementById("m-stages").appendChild(
+          el("div", "hint", "布局资产加载失败：" + e.message + "（请从 web/ 根目录起服务）"));
+      });
+  }
+  document.getElementById("btn-refresh").onclick = loadPlan;
+  loadPlan();
 })();