diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js
index 482a089e..30c8ce44 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js
@@ -743,7 +743,7 @@ function elementById(id) {
         const element = document.getElementById(id);
         if (element) body.appendChild(element);
       });
-      tray.appendChild(details);
+      tray.insertBefore(details, document.getElementById("audio-controls"));
       api.applyLayout(savedLayoutName(), { persist: false });
     }
   }
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
index 5f8728b6..ed043b60 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
@@ -372,34 +372,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
                 <div class="vchan-picker" id="vchan-picker"></div>
               </div>
             </div>
-            <details id="scheduler-controls" class="advanced-radio-controls scheduler-controls-section">
-              <summary>Scheduler controls</summary>
-              <div class="advanced-radio-body">
-                <div class="scheduler-control-row" style="display:none">
-                  <div class="scheduler-release-wrap">
-                    <div class="scheduler-action-row">
-                      <div class="scheduler-step-controls">
-                        <button id="scheduler-prev-btn" type="button">Previous Entry</button>
-                        <button id="scheduler-next-btn" type="button">Next Entry</button>
-                      </div>
-                      <button id="scheduler-release-btn" type="button">Release to Scheduler</button>
-                      <div id="scheduler-cycle-status" class="interleave-ring-wrap" style="display:none;">
-                        <svg class="interleave-ring" viewBox="0 0 36 36">
-                          <circle class="interleave-ring-bg" cx="18" cy="18" r="15.915" />
-                          <circle class="interleave-ring-fill" id="interleave-ring-fill" cx="18" cy="18" r="15.915"
-                                  stroke-dasharray="100" stroke-dashoffset="100" />
-                        </svg>
-                        <div class="interleave-ring-text">
-                          <div class="interleave-ring-label" id="interleave-active-name">--</div>
-                          <div class="interleave-ring-sub" id="interleave-countdown">--</div>
-                        </div>
-                      </div>
-                    </div>
-                    <div id="scheduler-release-status" class="scheduler-release-status">Scheduler is controlling the rig.</div>
-                  </div>
-                </div>
-              </div>
-            </details>
             <div class="full-row label-below-row">
               <div class="label"><span>Signal</span></div>
               <div class="signal" style="gap: 1rem;">
@@ -448,6 +420,34 @@ SPDX-License-Identifier: GPL-2.0-or-later
                 </div>
               </div>
             </details>
+            <details id="scheduler-controls" class="advanced-radio-controls scheduler-controls-section">
+              <summary>Scheduler controls</summary>
+              <div class="advanced-radio-body">
+                <div class="scheduler-control-row" style="display:none">
+                  <div class="scheduler-release-wrap">
+                    <div class="scheduler-action-row">
+                      <div class="scheduler-step-controls">
+                        <button id="scheduler-prev-btn" type="button">Previous Entry</button>
+                        <button id="scheduler-next-btn" type="button">Next Entry</button>
+                      </div>
+                      <button id="scheduler-release-btn" type="button">Release to Scheduler</button>
+                      <div id="scheduler-cycle-status" class="interleave-ring-wrap" style="display:none;">
+                        <svg class="interleave-ring" viewBox="0 0 36 36">
+                          <circle class="interleave-ring-bg" cx="18" cy="18" r="15.915" />
+                          <circle class="interleave-ring-fill" id="interleave-ring-fill" cx="18" cy="18" r="15.915"
+                                  stroke-dasharray="100" stroke-dashoffset="100" />
+                        </svg>
+                        <div class="interleave-ring-text">
+                          <div class="interleave-ring-label" id="interleave-active-name">--</div>
+                          <div class="interleave-ring-sub" id="interleave-countdown">--</div>
+                        </div>
+                      </div>
+                    </div>
+                    <div id="scheduler-release-status" class="scheduler-release-status">Scheduler is controlling the rig.</div>
+                  </div>
+                </div>
+              </div>
+            </details>
           </div>
         </div>
       </div>
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/ui-core.ts b/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/ui-core.ts
index 4bf33772..4e7f0591 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/ui-core.ts
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/ui-core.ts
@@ -317,7 +317,10 @@ function elementById<T extends HTMLElement>(id: string): T {
         const element = document.getElementById(id);
         if (element) body.appendChild(element);
       });
-      tray.appendChild(details);
+      // Ahead of the collapsibles the markup ships: the radio's own settings
+      // come before audio and the scheduler, and appending would put the
+      // section built here last whatever the markup says.
+      tray.insertBefore(details, document.getElementById("audio-controls"));
       api.applyLayout(savedLayoutName(), { persist: false });
     }
   }
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs
index a00b9b8b..e90c2989 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs
@@ -23,6 +23,15 @@ try {
   await page.locator("summary", { hasText: "Audio controls" }).click();
   assert.equal(await page.locator("#rx-audio-btn").count(), 1);
 
+  // Section order in the tray. "Advanced radio controls" is built at runtime,
+  // so it lands wherever ui-core puts it rather than where the markup says —
+  // appending, as it once did, always left it last.
+  const sections = await page.evaluate(() =>
+    [...document.querySelectorAll(".controls-tray > details")].map((section) =>
+      section.querySelector("summary").textContent.trim()));
+  assert.deepEqual(sections, ["Advanced radio controls", "Audio controls", "Scheduler controls"],
+    `tray sections are ${JSON.stringify(sections)}`);
+
   // Mode is a button group over a hidden <select>, which stays the value a
   // dozen call sites and several plugins read. The click has to reach it, and
   // the select must not take part in layout while it does.