[fix](trx-frontend-http): render the header menus above the page

Both header dropdowns were laid out inside the bar rather than over the
page.  The navigation menu opened as an 18px sliver positioned above its
own button, and the overflow menu did not appear at all.

Two causes.  The tab strip kept `overflow-x: auto` from when it scrolled,
which clips an absolutely positioned descendant — and the strip is what
the navigation menu anchors to.  The strip no longer scrolls, since the
occasional destinations moved behind More, so the property and the edge
fade that went with it are both gone.

Anchoring in fixed coordinates at open time addresses the general case:
an absolutely positioned menu is clipped by any scrolling ancestor and
trapped inside whatever stacking context its ancestors create, so it can
be squashed inside the bar or painted underneath page content.  Fixed
coordinates answer to the viewport, and the menu flips above its button
near the bottom edge.

Clearing `right` when setting `left` keeps the menus at their natural
width: the stylesheet pins them to the right of their anchor, and leaving
that in place stretched them across the bar — 845px for a four-item list.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GdyUjuXejCEfiub675z6cz
Signed-off-by: Stan Grams <sjg@haxx.space>

container/Containerfile

@@ -46,10 +46,23 @@ RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs \
 # sccache — shared compilation cache. Enabled at build time via
 # RUSTC_WRAPPER (see the CI workflow and .devcontainer), not repo-wide, so
 # non-SDK builds are unaffected. musl build is static and runs anywhere.
+#
+# The release asset is per-architecture, so resolve it from `uname -m` rather
+# than hardcoding one triple: everything else in this image is arch-agnostic,
+# and a pinned x86_64 URL is what forces an amd64 build (and Rosetta or qemu)
+# on an arm64 host. `uname -m` reflects the build platform under plain
+# docker/podman build as well as buildx, unlike the BuildKit-only TARGETARCH.
 ARG SCCACHE_VERSION=0.8.2
-RUN curl -fsSL "https://github.com/mozilla/sccache/releases/download/v${SCCACHE_VERSION}/sccache-v${SCCACHE_VERSION}-x86_64-unknown-linux-musl.tar.gz" \
+RUN set -eux; \
-      | tar -xz -C /tmp \
+    case "$(uname -m)" in \
-    && install -m755 "/tmp/sccache-v${SCCACHE_VERSION}-x86_64-unknown-linux-musl/sccache" /usr/local/bin/sccache \
+      x86_64)  sccache_arch=x86_64 ;; \
-    && rm -rf /tmp/sccache-*
+      aarch64|arm64) sccache_arch=aarch64 ;; \
+      *) echo "unsupported architecture for sccache: $(uname -m)" >&2; exit 1 ;; \
+    esac; \
+    sccache_dist="sccache-v${SCCACHE_VERSION}-${sccache_arch}-unknown-linux-musl"; \
+    curl -fsSL "https://github.com/mozilla/sccache/releases/download/v${SCCACHE_VERSION}/${sccache_dist}.tar.gz" \
+      | tar -xz -C /tmp; \
+    install -m755 "/tmp/${sccache_dist}/sccache" /usr/local/bin/sccache; \
+    rm -rf /tmp/sccache-*
 
 WORKDIR /work

container/README.md

@@ -17,6 +17,13 @@ and `clippy` are identical everywhere — no "works on my machine".
 
 ## Build and publish
 
+Nothing in the image is architecture-specific: the base image, the Debian build
+dependencies, Node.js, `rustup` and the `sccache` release all resolve per
+architecture, so the same `Containerfile` builds natively on x86_64 and arm64.
+
+Single architecture — the tag then only works on the architecture you built it
+on:
+
 ```bash
 # from the repo root
 podman build -t git.haxx.space/sjg/trx-rs/sdk:latest container
@@ -24,12 +31,60 @@ podman login git.haxx.space
 podman push git.haxx.space/sjg/trx-rs/sdk:latest
 ```
 
+**Both architectures without emulation.** The CI runner is x86_64 and Apple
+Silicon developer machines are arm64, so `:latest` has to be a manifest list —
+a single-architecture tag makes the other side fall back to Rosetta or qemu.
+Build each half natively on a host of that architecture, then join them:
+
+```bash
+# on an x86_64 host
+podman build --platform linux/amd64 -t git.haxx.space/sjg/trx-rs/sdk:latest-amd64 container
+podman push git.haxx.space/sjg/trx-rs/sdk:latest-amd64
+
+# on an arm64 host
+podman build --platform linux/arm64 -t git.haxx.space/sjg/trx-rs/sdk:latest-arm64 container
+podman push git.haxx.space/sjg/trx-rs/sdk:latest-arm64
+
+# from either, once both are pushed
+podman manifest create git.haxx.space/sjg/trx-rs/sdk:latest \
+  git.haxx.space/sjg/trx-rs/sdk:latest-amd64 \
+  git.haxx.space/sjg/trx-rs/sdk:latest-arm64
+podman manifest push --all git.haxx.space/sjg/trx-rs/sdk:latest
+```
+
+Building both from one machine is a single command
+(`podman build --platform linux/amd64,linux/arm64 --manifest ...`), but the
+foreign half runs under emulation and is slow — the two-host flow above is
+what keeps every build native.
+
 Tag with the Rust version too (e.g. `:1.97.1`) if you want reproducible pins.
 Make the package **public** (Gitea → Packages → the image → Settings) so the CI
 runner and developers can pull it without credentials. If you keep it private,
 add `credentials:` under the workflow's `container:` and log the runner into the
 registry.
 
+Pushing a rebuilt image is not enough on its own: `:latest` is a moving tag, and
+act_runner reuses whatever it cached the first time unless `force_pull: true` is
+set (see `runner-config.example.yaml`). Without it the job log says
+`Image exists? true` and the run behaves as though the image were never
+rebuilt — a tool added to the `Containerfile` reads as missing from the image.
+Either set `force_pull`, or refresh the VM's copy by hand:
+
+```bash
+docker pull git.haxx.space/sjg/trx-rs/sdk:latest
+docker run --rm git.haxx.space/sjg/trx-rs/sdk:latest sccache --version
+```
+
+### macOS note
+
+Apple's `container` CLI builds through a BuildKit helper VM that is configured
+with Rosetta whether or not the target is x86_64, so `container build` fails
+with *"Rosetta is not installed"* on a clean machine. That is a property of the
+builder, not of this image — `container run` works natively without it. Either
+install Rosetta once (`softwareupdate --install-rosetta`, after which an arm64
+build still produces a native arm64 image), or build with Podman, whose arm64
+BuildKit needs no emulation.
+
 ## Developer use
 
 Reproducible one-off build, no local toolchain needed:
@@ -111,8 +166,10 @@ adduser -S -D -H -h /var/lib/act_runner act
 addgroup act docker
 
 # 2. act_runner binary (static Go build, works on musl)
+#    Upstream publishes per-architecture builds; pick the host's.
+case "$(uname -m)" in x86_64) arch=amd64 ;; aarch64) arch=arm64 ;; esac
 curl -fsSL -o /usr/local/bin/act_runner \
-  https://gitea.com/gitea/act_runner/releases/download/v0.2.11/act_runner-0.2.11-linux-amd64
+  "https://gitea.com/gitea/act_runner/releases/download/v0.2.11/act_runner-0.2.11-linux-${arch}"
 chmod +x /usr/local/bin/act_runner
 
 # 3. Config + register one runner per project (scope keeps their jobs apart)

container/runner-config.example.yaml

@@ -31,5 +31,17 @@ container:
   # host (create it first: `mkdir -p /var/cache/sccache`), matching SCCACHE_DIR
   # in the workflow.
   options: "--cpus=2 -v /var/cache/sccache:/sccache"
+  # act_runner rejects every bind mount unless it is listed here — the default
+  # is an empty allowlist, so the -v above is dropped with only a
+  # "[...] is not a valid volume, will be ignored" line in the job log, and
+  # SCCACHE_DIR then points at a directory that does not outlive the job.
+  valid_volumes:
+    - /var/cache/sccache
   # Reuse the host VM's Docker network for the built-in cache/artifact server.
   network: "host"
+  # The workflow pulls the SDK image by the moving `:latest` tag. Without this
+  # the runner logs "Image exists? true" and reuses whatever it cached the
+  # first time, so pushing a rebuilt image has no effect until someone pulls
+  # on the VM by hand — which looks like the image is missing a tool it in
+  # fact has. The extra registry round-trip per job is nothing next to a build.
+  force_pull: true

src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js

@@ -637,6 +637,22 @@ function elementById(id) {
   };
   const layoutCapabilities = { broadcast: false, digital: false };
   let activeRigId = null;
+  const layoutSections = [
+    { id: "advanced-radio-controls", key: "advanced" },
+    { id: "audio-controls", key: "audio" },
+    { id: "scheduler-controls", key: "scheduler" }
+  ];
+  const seededSections = /* @__PURE__ */ new Set();
+  let appliedLayoutName = null;
+  function seedLayoutSections(layout, layoutChanged) {
+    layoutSections.forEach(({ id, key }) => {
+      const section = document.getElementById(id);
+      if (!section) return;
+      if (!layoutChanged && seededSections.has(id)) return;
+      seededSections.add(id);
+      section.open = layout[key];
+    });
+  }
   function layoutStorageKey() {
     return activeRigId ? `trxOperatorLayout:${activeRigId}` : "trxOperatorLayout";
   }
@@ -690,12 +706,9 @@ function elementById(id) {
     const layout = layouts[permittedName];
     document.body.dataset.operatorLayout = permittedName in layouts ? permittedName : "compact";
     if (options.persist !== false) localStorage.setItem(layoutStorageKey(), permittedName);
-    const details = document.getElementById("advanced-radio-controls");
+    const layoutChanged = appliedLayoutName !== permittedName;
-    if (details) details.open = layout.advanced;
+    appliedLayoutName = permittedName;
-    const audioDetails = document.getElementById("audio-controls");
+    seedLayoutSections(layout, layoutChanged);
-    if (audioDetails) audioDetails.open = layout.audio;
-    const schedulerDetails = document.getElementById("scheduler-controls");
-    if (schedulerDetails) schedulerDetails.open = layout.scheduler;
     if (options.navigate && typeof browserWindow.navigateToTab === "function") {
       browserWindow.navigateToTab(layout.preferredTab);
     }
@@ -734,6 +747,90 @@ function elementById(id) {
       api.applyLayout(savedLayoutName(), { persist: false });
     }
   }
+  const overflowOrder = [".operator-layout-picker", ".header-style-pick", "#theme-toggle"];
+  function anchorMenu(button, menu) {
+    const rect = button.getBoundingClientRect();
+    menu.style.position = "fixed";
+    menu.style.zIndex = "200";
+    menu.style.top = "0px";
+    menu.style.bottom = "auto";
+    menu.style.right = "auto";
+    const width = menu.offsetWidth || 200;
+    const height = menu.offsetHeight || 0;
+    menu.style.left = `${String(Math.round(Math.min(Math.max(8, rect.right - width), window.innerWidth - width - 8)))}px`;
+    const below = rect.bottom + 8;
+    if (below + height <= window.innerHeight - 8) {
+      menu.style.top = `${String(Math.round(below))}px`;
+    } else {
+      menu.style.top = "auto";
+      menu.style.bottom = `${String(Math.round(window.innerHeight - rect.top + 8))}px`;
+    }
+  }
+  function installTopBarOverflow() {
+    const actions = document.querySelector(".top-bar-actions");
+    if (!actions || document.getElementById("top-bar-more")) return;
+    const wrap = document.createElement("div");
+    wrap.id = "top-bar-more";
+    wrap.className = "top-bar-more";
+    const button = document.createElement("button");
+    button.type = "button";
+    button.id = "top-bar-more-btn";
+    button.className = "header-bar-btn top-bar-more-btn";
+    button.textContent = "⋯";
+    button.setAttribute("aria-haspopup", "menu");
+    button.setAttribute("aria-expanded", "false");
+    button.setAttribute("aria-label", "More controls");
+    button.title = "More controls";
+    const menu = document.createElement("div");
+    menu.id = "top-bar-more-menu";
+    menu.className = "top-bar-more-menu";
+    menu.setAttribute("role", "menu");
+    button.setAttribute("aria-controls", menu.id);
+    wrap.append(button, menu);
+    actions.appendChild(wrap);
+    const closeMenu = () => {
+      menu.classList.remove("is-open");
+      button.setAttribute("aria-expanded", "false");
+    };
+    button.addEventListener("click", () => {
+      const open = menu.classList.toggle("is-open");
+      button.setAttribute("aria-expanded", String(open));
+      if (open) anchorMenu(button, menu);
+    });
+    document.addEventListener("click", (event) => {
+      if (!(event.target instanceof Node) || !wrap.contains(event.target)) closeMenu();
+    });
+    document.addEventListener("keydown", (event) => {
+      if (event.key === "Escape") closeMenu();
+    });
+    const barFits = () => {
+      const bar = actions.closest(".tab-bar");
+      if (!bar) return true;
+      const identity = bar.querySelector(".header-main");
+      const nav = bar.querySelector(".tab-bar-nav");
+      const gutters = 48;
+      const needed = (identity?.offsetWidth ?? 0) + (nav?.scrollWidth ?? 0) + actions.scrollWidth + gutters;
+      return needed <= bar.clientWidth;
+    };
+    const reflowOverflow = () => {
+      overflowOrder.forEach((selector) => {
+        const element = menu.querySelector(selector);
+        if (element) actions.insertBefore(element, wrap);
+      });
+      wrap.hidden = true;
+      for (const selector of overflowOrder) {
+        if (barFits()) break;
+        const element = actions.querySelector(selector);
+        if (!element) continue;
+        wrap.hidden = false;
+        menu.appendChild(element);
+      }
+      wrap.hidden = menu.children.length === 0;
+      if (wrap.hidden) closeMenu();
+    };
+    reflowOverflow();
+    window.addEventListener("resize", reflowOverflow);
+  }
   function installMobileMore() {
     const nav = document.querySelector(".tab-bar-nav");
     if (!nav || document.getElementById("mobile-more-btn")) return;
@@ -773,7 +870,10 @@ function elementById(id) {
     more.addEventListener("click", () => {
       const open = menu.classList.toggle("is-open");
       more.setAttribute("aria-expanded", String(open));
-      if (open) menu.querySelector('[role="menuitem"]')?.focus();
+      if (open) {
+        anchorMenu(more, menu);
+        menu.querySelector('[role="menuitem"]')?.focus();
+      }
     });
     document.addEventListener("click", (event) => {
       if (!(event.target instanceof Node) || !menu.contains(event.target) && !more.contains(event.target)) closeMore();
@@ -840,6 +940,7 @@ function elementById(id) {
   api.init = function init() {
     ensureLiveRegions();
     installLayoutControls();
+    installTopBarOverflow();
     installMobileMore();
     installDecoderPicker();
     installDecoderBadges();
@@ -1934,7 +2035,6 @@ var signalSplitValueEl = document.getElementById("signal-split-value");
 var overviewPeakHoldEl = document.getElementById("overview-peak-hold");
 var themeToggleBtn = document.getElementById("theme-toggle");
 var headerRigSwitchSelect = document.getElementById("header-rig-switch-select");
-var headerRigSummary = document.getElementById("header-rig-summary");
 var headerStylePickSelect = document.getElementById("header-style-pick-select");
 var rdsPsOverlay = document.getElementById("rds-ps-overlay");
 var tabMainEl = document.getElementById("tab-main");
@@ -2651,19 +2751,6 @@ function populateRigPicker(selectEl, rigIds, activeRigId, disabled) {
   }
   selectEl.disabled = disabled;
 }
-function updateRigIdentitySummary(rigId, pending = false) {
-  if (!headerRigSummary) return;
-  const rig = serverRigs.find((entry) => entry?.remote === rigId);
-  if (!rig) {
-    headerRigSummary.textContent = pending ? "Switching rigs…" : "No rig details available";
-    return;
-  }
-  const hardware = [rig.manufacturer, rig.model].map((value) => String(value || "").trim()).filter(Boolean).join(" ") || rig.remote;
-  const modes = Array.isArray(rig.supported_modes) ? rig.supported_modes.map(normalizeMode).filter(Boolean) : [];
-  const features = [rig.tx ? "TX" : "RX", rig.filter_controls ? "SDR filters" : null, ...modes.slice(0, 5)];
-  if (modes.length > 5) features.push(`+${modes.length - 5} modes`);
-  headerRigSummary.textContent = `${pending ? "Switching to " : ""}${hardware} · ${features.filter(Boolean).join(" · ")}`;
-}
 function updateRigSubtitle(activeRigId) {
   if (!rigSubtitle) return;
   const name = activeRigId && lastRigDisplayNames[activeRigId] || activeRigId || "--";
@@ -2694,7 +2781,6 @@ function applyRigList(activeRigId, rigIds, displayNames = {}) {
   const disableSwitch = lastRigIds.length === 0 || !authRole || authRole === "rx";
   populateRigPicker(headerRigSwitchSelect, lastRigIds, lastActiveRigId, disableSwitch);
   updateRigSubtitle(lastActiveRigId);
-  updateRigIdentitySummary(lastActiveRigId);
   window.trxUi?.setActiveRig(lastActiveRigId);
   if (rigListChanged) {
     window.trx.modules.scheduler?.setRig(lastActiveRigId);
@@ -4955,7 +5041,7 @@ async function switchRigFromSelect(selectEl) {
   rigSwitchInProgress = true;
   setControlPending(selectEl, true);
   selectEl.closest(".header-rig-switch")?.classList.add("is-switching");
-  updateRigIdentitySummary(nextRig, true);
+  showHint(`Switching to ${lastRigDisplayNames[nextRig] || nextRig}…`);
   showHint(`Switching to ${lastRigDisplayNames[nextRig] || nextRig}…`);
   try {
     const sidParam = sseSessionId ? `&session_id=${encodeURIComponent(sseSessionId)}` : "";
@@ -4963,7 +5049,6 @@ async function switchRigFromSelect(selectEl) {
     lastActiveRigId = nextRig;
     resetDecoderStateOnRigSwitch();
     updateRigSubtitle(lastActiveRigId);
-    updateRigIdentitySummary(lastActiveRigId);
     window.trxUi?.setActiveRig(lastActiveRigId);
     window.trx.modules.scheduler?.setRig(lastActiveRigId);
     window.trx.modules.backgroundDecode?.setRig(lastActiveRigId);
@@ -4982,7 +5067,6 @@ async function switchRigFromSelect(selectEl) {
   } catch (err) {
     console.error("select_rig failed:", err);
     selectEl.value = prevRig || "";
-    updateRigIdentitySummary(prevRig);
     window.trxUi?.notify("Rig could not be switched", { kind: "error" });
   } finally {
     rigSwitchInProgress = false;

src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html

@@ -46,7 +46,7 @@ SPDX-License-Identifier: GPL-2.0-or-later
         <div class="tab-bar-nav" aria-label="Primary navigation">
           <button class="tab active" data-tab="main">
             <svg class="tab-icon" aria-hidden="true"><use href="#icon-home"/></svg>
-            <span class="tab-label">Main</span>
+            <span class="tab-label">Radio</span>
           </button>
           <button class="tab" data-tab="bookmarks">
             <svg class="tab-icon" aria-hidden="true"><use href="#icon-bookmark"/></svg>
@@ -85,7 +85,6 @@ SPDX-License-Identifier: GPL-2.0-or-later
         <button id="header-rec-btn" class="header-bar-btn header-rec-btn" type="button" aria-label="Toggle recording" title="Toggle recording">REC</button>
         <div class="header-rig-switch">
           <select id="header-rig-switch-select" aria-label="Select active rig"></select>
-          <span id="header-rig-summary" class="header-rig-summary" aria-live="polite"></span>
         </div>
         <div class="header-style-pick">
           <select id="header-style-pick-select" aria-label="Select UI style">

src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css

@@ -1229,12 +1229,20 @@ small { color: var(--text-muted); }
   gap: 0;
   flex-shrink: 0;
 }
+/* One row, always.  Controls that do not fit are moved into the overflow menu
+ * by ui-core rather than wrapping: wrapping made the header's height depend on
+ * the viewport width in a way that was not even monotonic (112px at 1440,
+ * 169px at 1100, 131px at 900), which is what made the bar feel unstable. */
 .top-bar-actions {
   display: flex;
-  align-items: flex-start;
+  align-items: center;
-  gap: 0.45rem 0.6rem;
+  gap: 0.4rem;
   min-width: 0;
-  flex-wrap: wrap;
+  flex-wrap: nowrap;
+}
+/* Every control in the bar is the same height and none of them stretch. */
+.top-bar-actions > * {
+  flex: 0 0 auto;
 }
 .header-bar-btn.header-audio-btn {
   width: 2rem;
@@ -1403,21 +1411,13 @@ small { color: var(--text-muted); }
   gap: 0.8rem;
   padding: 0.9rem 0.2rem 0;
 }
+/* Inline, not stacked: the summary used to sit under the select, making this
+ * the only 54px control in a bar of 32px ones. */
 .header-rig-switch {
-  display: grid;
+  display: flex;
-  grid-template-columns: minmax(0, 1fr);
+  align-items: center;
-  align-items: start;
+  gap: 0.4rem;
-  gap: 0.35rem;
+  min-width: 0;
-}
-.header-rig-summary {
-  display: block;
-  max-width: 20rem;
-  color: var(--text-muted);
-  font-size: var(--fs-xs);
-  line-height: 1.35;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
 }
 .header-rig-switch select {
   min-width: 8rem;
@@ -1531,7 +1531,17 @@ small { color: var(--text-muted); }
   align-items: center;
   gap: 0.2rem;
   min-width: 0;
-  flex-wrap: wrap;
+  /* Never wraps and never scrolls: the occasional destinations live behind
+   * More, so four tabs plus More always fit.  overflow-x here would clip the
+   * dropdown this element anchors. */
+  flex-wrap: nowrap;
+}
+.tab-bar-nav .tab { flex: 0 0 auto; }
+/* Icons before scrolling: every tab already carries one, and four icons plus
+ * More always fit, so the strip never has to hide a destination. */
+@media (max-width: 1180px) and (min-width: 701px) {
+  .tab-bar-nav .tab .tab-label { display: none; }
+  .tab-bar-nav .tab { padding: 0.5rem 0.6rem; }
 }
 .tab {
   background: transparent;
@@ -2964,7 +2974,10 @@ button.is-active {
   text-transform: uppercase;
   overflow: visible;
 }
-.operator-layout-picker::before { content: "Layout"; }
+/* The prefix made the least-used control the widest in the bar; the
+ * select carries its own aria-label and title instead. */
+.operator-layout-picker { padding-left: 0; }
+.operator-layout-picker select { max-width: 8rem; }
 .operator-layout-picker select {
   width: auto;
   min-height: 2rem;
@@ -3060,9 +3073,22 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
   body[data-operator-layout="broadcast"] .controls-row { grid-template-columns: 1fr auto; }
   body[data-operator-layout="broadcast"] #wfm-controls-col { grid-column: 1 / -1; }
 }
-.mobile-more-btn, .mobile-more-menu, .decoder-tab-select { display: none; }
+/* One navigation model at every width.  Statistics, Recorder, Settings and
+ * About are occasional destinations: they live behind More rather than
+ * competing with the operating tabs for the row and then scrolling out of
+ * reach.  The mobile layout already grouped them this way; the desktop strip
+ * now matches it, which is why the tab strip no longer needs to scroll. */
+.tab-bar-nav .tab[data-tab="statistics"],
+.tab-bar-nav .tab[data-tab="recorder"],
+.tab-bar-nav .tab[data-tab="settings"],
+.tab-bar-nav .tab[data-tab="about"] { display: none; }
+.mobile-more-btn { display: flex; flex: 0 0 auto; }
+.mobile-more-menu, .decoder-tab-select { display: none; }
+.tab-bar-nav { position: relative; }
 .mobile-more-menu {
-  position: fixed;
+  position: absolute;
+  top: calc(100% + 0.4rem);
+  right: 0;
   right: max(0.75rem, env(safe-area-inset-right));
   bottom: calc(5.4rem + env(safe-area-inset-bottom));
   z-index: 80;
@@ -3259,6 +3285,12 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
   .tab[data-tab="statistics"], .tab[data-tab="recorder"],
   .tab[data-tab="settings"], .tab[data-tab="about"] { display: none; }
   .mobile-more-btn { display: flex; }
+  .mobile-more-menu {
+    position: fixed;
+    top: auto;
+    right: max(0.75rem, env(safe-area-inset-right));
+    bottom: calc(5.4rem + env(safe-area-inset-bottom));
+  }
   .mobile-more-btn[aria-expanded="true"] {
     color: var(--accent-text);
     background: color-mix(in srgb, var(--accent-green) 10%, transparent);
@@ -3282,24 +3314,24 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
   .toast-region { bottom: calc(5.7rem + env(safe-area-inset-bottom)); }
   .top-bar-actions {
     width: 100%;
-    justify-content: flex-start;
+    justify-content: flex-end;
-    flex-wrap: wrap;
+    flex-wrap: nowrap;
-    gap: 0.45rem;
+    gap: 0.4rem;
   }
   .operator-layout-picker { max-width: 100%; }
   .operator-layout-picker select { max-width: 10rem; }
   .header-rig-switch,
   .header-style-pick {
-    flex: 1 1 12rem;
+    flex: 0 0 auto;
     min-width: 0;
   }
   .header-rig-switch select,
   .header-style-pick select {
-    width: 100%;
+    width: auto;
     min-width: 0;
   }
   .header-bar-btn {
-    flex: 1 1 calc(50% - 0.3rem);
+    flex: 0 0 auto;
     min-width: 0;
   }
   #tab-main,
@@ -5379,3 +5411,34 @@ body[data-operator-layout="broadcast"] #cw-bar-overlay {
     font-size: max(0.75rem, 12px);
   }
 }
+
+
+/* --- Top bar overflow menu ------------------------------------------------ */
+.top-bar-more { position: relative; }
+.top-bar-more[hidden] { display: none; }
+.top-bar-more-btn {
+  width: 2rem;
+  height: 2rem;
+  min-height: 2rem;
+  padding: 0;
+  font-size: 1rem;
+  line-height: 1;
+}
+.top-bar-more-menu {
+  position: absolute;
+  top: calc(100% + 0.35rem);
+  right: 0;
+  z-index: 40;
+  display: none;
+  flex-direction: column;
+  gap: 0.4rem;
+  min-width: 12rem;
+  padding: 0.5rem;
+  border: 1px solid var(--border-light);
+  border-radius: var(--radius-md);
+  background: var(--surface);
+  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
+}
+.top-bar-more-menu.is-open { display: flex; }
+.top-bar-more-menu > * { width: 100%; }
+.top-bar-more-menu select { width: 100%; max-width: none; }

src/trx-client/trx-frontend/trx-frontend-http/frontend/src/app.ts

@@ -724,7 +724,6 @@ const signalSplitValueEl = document.getElementById("signal-split-value");
 const overviewPeakHoldEl = document.getElementById("overview-peak-hold") as HTMLInputElement | null;
 const themeToggleBtn = document.getElementById("theme-toggle") as HTMLButtonElement | null;
 const headerRigSwitchSelect = document.getElementById("header-rig-switch-select") as HTMLSelectElement | null;
-const headerRigSummary = document.getElementById("header-rig-summary");
 const headerStylePickSelect = document.getElementById("header-style-pick-select") as HTMLSelectElement | null;
 const rdsPsOverlay = document.getElementById("rds-ps-overlay");
 const tabMainEl = document.getElementById("tab-main");
@@ -1371,20 +1370,6 @@ function populateRigPicker(selectEl: HTMLSelectElement | null, rigIds: string[],
   selectEl.disabled = disabled;
 }
 
-function updateRigIdentitySummary(rigId: string | null, pending = false) {
-  if (!headerRigSummary) return;
-  const rig = serverRigs.find((entry) => entry?.remote === rigId);
-  if (!rig) {
-    headerRigSummary.textContent = pending ? "Switching rigs…" : "No rig details available";
-    return;
-  }
-  const hardware = [rig.manufacturer, rig.model].map(value => String(value || "").trim()).filter(Boolean).join(" ") || rig.remote;
-  const modes = Array.isArray(rig.supported_modes) ? rig.supported_modes.map(normalizeMode).filter(Boolean) : [];
-  const features = [rig.tx ? "TX" : "RX", rig.filter_controls ? "SDR filters" : null, ...modes.slice(0, 5)];
-  if (modes.length > 5) features.push(`+${modes.length - 5} modes`);
-  headerRigSummary.textContent = `${pending ? "Switching to " : ""}${hardware} · ${features.filter(Boolean).join(" · ")}`;
-}
-
 function updateRigSubtitle(activeRigId: string | null) {
   if (!rigSubtitle) return;
   const name = (activeRigId && lastRigDisplayNames[activeRigId]) || activeRigId || "--";
@@ -1421,7 +1406,6 @@ function applyRigList(activeRigId: string | null, rigIds: string[], displayNames
   const disableSwitch = lastRigIds.length === 0 || !authRole || authRole === "rx";
   populateRigPicker(headerRigSwitchSelect, lastRigIds, lastActiveRigId, disableSwitch);
   updateRigSubtitle(lastActiveRigId);
-  updateRigIdentitySummary(lastActiveRigId);
   window.trxUi?.setActiveRig(lastActiveRigId);
   if (rigListChanged) {
     window.trx.modules.scheduler?.setRig(lastActiveRigId);
@@ -4023,7 +4007,7 @@ async function switchRigFromSelect(selectEl: HTMLSelectElement) {
   rigSwitchInProgress = true;
   setControlPending(selectEl, true);
   selectEl.closest(".header-rig-switch")?.classList.add("is-switching");
-  updateRigIdentitySummary(nextRig, true);
+  showHint(`Switching to ${lastRigDisplayNames[nextRig] || nextRig}…`);
   showHint(`Switching to ${lastRigDisplayNames[nextRig] || nextRig}…`);
   try {
     const sidParam = sseSessionId ? `&session_id=${encodeURIComponent(sseSessionId)}` : "";
@@ -4031,7 +4015,6 @@ async function switchRigFromSelect(selectEl: HTMLSelectElement) {
     lastActiveRigId = nextRig;
     resetDecoderStateOnRigSwitch();
     updateRigSubtitle(lastActiveRigId);
-    updateRigIdentitySummary(lastActiveRigId);
     window.trxUi?.setActiveRig(lastActiveRigId);
     window.trx.modules.scheduler?.setRig(lastActiveRigId);
     window.trx.modules.backgroundDecode?.setRig(lastActiveRigId);
@@ -4050,7 +4033,6 @@ async function switchRigFromSelect(selectEl: HTMLSelectElement) {
   } catch (err) {
     console.error("select_rig failed:", err);
     selectEl.value = prevRig || "";
-    updateRigIdentitySummary(prevRig);
     window.trxUi?.notify("Rig could not be switched", { kind: "error" });
   } finally {
     rigSwitchInProgress = false;

src/trx-client/trx-frontend/trx-frontend-http/frontend/src/ui-core.ts

@@ -195,6 +195,31 @@ function elementById<T extends HTMLElement>(id: string): T {
   const layoutCapabilities: Record<LayoutCapability, boolean> = { broadcast: false, digital: false };
   let activeRigId: string | null = null;
 
+  // A layout seeds the collapsible sections; it does not hold them there.
+  // applyLayout runs on every rig-state refresh, so re-applying the disclosure
+  // state unconditionally would reopen or close sections under the operator
+  // once a second — the reason a section could not be expanded while a layout
+  // that collapses it was selected.  Sections are therefore written only when
+  // the layout actually changes, or the first time each one appears in the DOM
+  // (the advanced controls are built after the first applyLayout call).
+  const layoutSections: { id: string; key: "advanced" | "audio" | "scheduler" }[] = [
+    { id: "advanced-radio-controls", key: "advanced" },
+    { id: "audio-controls", key: "audio" },
+    { id: "scheduler-controls", key: "scheduler" },
+  ];
+  const seededSections = new Set<string>();
+  let appliedLayoutName: LayoutName | null = null;
+
+  function seedLayoutSections(layout: OperatorLayout, layoutChanged: boolean) {
+    layoutSections.forEach(({ id, key }) => {
+      const section = document.getElementById(id) as HTMLDetailsElement | null;
+      if (!section) return;
+      if (!layoutChanged && seededSections.has(id)) return;
+      seededSections.add(id);
+      section.open = layout[key];
+    });
+  }
+
   function layoutStorageKey() {
     return activeRigId ? `trxOperatorLayout:${activeRigId}` : "trxOperatorLayout";
   }
@@ -255,12 +280,9 @@ function elementById<T extends HTMLElement>(id: string): T {
     const layout = layouts[permittedName];
     document.body.dataset.operatorLayout = permittedName in layouts ? permittedName : "compact";
     if (options.persist !== false) localStorage.setItem(layoutStorageKey(), permittedName);
-    const details = document.getElementById("advanced-radio-controls") as HTMLDetailsElement | null;
+    const layoutChanged = appliedLayoutName !== permittedName;
-    if (details) details.open = layout.advanced;
+    appliedLayoutName = permittedName;
-    const audioDetails = document.getElementById("audio-controls") as HTMLDetailsElement | null;
+    seedLayoutSections(layout, layoutChanged);
-    if (audioDetails) audioDetails.open = layout.audio;
-    const schedulerDetails = document.getElementById("scheduler-controls") as HTMLDetailsElement | null;
-    if (schedulerDetails) schedulerDetails.open = layout.scheduler;
     if (options.navigate && typeof browserWindow.navigateToTab === "function") {
       browserWindow.navigateToTab(layout.preferredTab);
     }
@@ -300,6 +322,118 @@ function elementById<T extends HTMLElement>(id: string): T {
     }
   }
 
+  // Secondary controls, in the order they leave the bar when it gets tight.
+  // Audio, record and the rig picker are the operating controls and stay.
+  const overflowOrder = [".operator-layout-picker", ".header-style-pick", "#theme-toggle"];
+
+  // Anchored at paint time in fixed coordinates.  An absolutely positioned
+  // dropdown is clipped by any scrolling ancestor and trapped inside the
+  // stacking context its ancestors create, so it can end up squashed inside
+  // the bar or painted underneath page content.  Fixed positioning answers to
+  // the viewport instead, and the menu flips above its button near the bottom
+  // edge.
+  function anchorMenu(button: HTMLElement, menu: HTMLElement) {
+    const rect = button.getBoundingClientRect();
+    menu.style.position = "fixed";
+    menu.style.zIndex = "200";
+    menu.style.top = "0px";
+    menu.style.bottom = "auto";
+    // The stylesheet pins these menus to the right of their anchor; leaving
+    // that in place while setting a left would stretch them across the bar.
+    menu.style.right = "auto";
+    const width = menu.offsetWidth || 200;
+    const height = menu.offsetHeight || 0;
+    menu.style.left = `${String(Math.round(Math.min(Math.max(8, rect.right - width), window.innerWidth - width - 8)))}px`;
+    const below = rect.bottom + 8;
+    if (below + height <= window.innerHeight - 8) {
+      menu.style.top = `${String(Math.round(below))}px`;
+    } else {
+      menu.style.top = "auto";
+      menu.style.bottom = `${String(Math.round(window.innerHeight - rect.top + 8))}px`;
+    }
+  }
+
+  function installTopBarOverflow() {
+    const actions = document.querySelector<HTMLElement>(".top-bar-actions");
+    if (!actions || document.getElementById("top-bar-more")) return;
+    const wrap = document.createElement("div");
+    wrap.id = "top-bar-more";
+    wrap.className = "top-bar-more";
+    const button = document.createElement("button");
+    button.type = "button";
+    button.id = "top-bar-more-btn";
+    button.className = "header-bar-btn top-bar-more-btn";
+    button.textContent = "⋯";
+    button.setAttribute("aria-haspopup", "menu");
+    button.setAttribute("aria-expanded", "false");
+    button.setAttribute("aria-label", "More controls");
+    button.title = "More controls";
+    const menu = document.createElement("div");
+    menu.id = "top-bar-more-menu";
+    menu.className = "top-bar-more-menu";
+    menu.setAttribute("role", "menu");
+    button.setAttribute("aria-controls", menu.id);
+    wrap.append(button, menu);
+    actions.appendChild(wrap);
+
+    const closeMenu = () => {
+      menu.classList.remove("is-open");
+      button.setAttribute("aria-expanded", "false");
+    };
+    button.addEventListener("click", () => {
+      const open = menu.classList.toggle("is-open");
+      button.setAttribute("aria-expanded", String(open));
+      if (open) anchorMenu(button, menu);
+    });
+    document.addEventListener("click", (event) => {
+      if (!(event.target instanceof Node) || !wrap.contains(event.target)) closeMenu();
+    });
+    document.addEventListener("keydown", (event) => { if (event.key === "Escape") closeMenu(); });
+
+    // Measured against the bar, not the actions container: the actions are
+    // sized by their content, so their own scrollWidth never exceeds their
+    // clientWidth.  A viewport-width threshold is not enough either — how much
+    // fits depends on the rig name and the translated labels, so a bar that is
+    // wide enough on one rig clips a control on another.
+    // `bar.scrollWidth > bar.clientWidth` is true even when nothing is clipped,
+    // so it cannot be the test.  What actually matters is that the controls stay
+    // inside the bar and the page tabs are not squeezed into a scroller: seeing
+    // every tab beats keeping the style picker inline.
+    // Compare natural widths against the space available.  Rendered widths
+    // cannot answer this: the nav has min-width 0 and scrolls, so it always
+    // shrinks to the leftover space and always reports "scrolling", while the
+    // bar reports overflow even when nothing is clipped.  scrollWidth on a
+    // scroll container is its unconstrained content width, which is what a fit
+    // test needs.
+    const barFits = () => {
+      const bar = actions.closest<HTMLElement>(".tab-bar");
+      if (!bar) return true;
+      const identity = bar.querySelector<HTMLElement>(".header-main");
+      const nav = bar.querySelector<HTMLElement>(".tab-bar-nav");
+      const gutters = 48;
+      const needed = (identity?.offsetWidth ?? 0) + (nav?.scrollWidth ?? 0) + actions.scrollWidth + gutters;
+      return needed <= bar.clientWidth;
+    };
+    const reflowOverflow = () => {
+      overflowOrder.forEach((selector) => {
+        const element = menu.querySelector<HTMLElement>(selector);
+        if (element) actions.insertBefore(element, wrap);
+      });
+      wrap.hidden = true;
+      for (const selector of overflowOrder) {
+        if (barFits()) break;
+        const element = actions.querySelector<HTMLElement>(selector);
+        if (!element) continue;
+        wrap.hidden = false;
+        menu.appendChild(element);
+      }
+      wrap.hidden = menu.children.length === 0;
+      if (wrap.hidden) closeMenu();
+    };
+    reflowOverflow();
+    window.addEventListener("resize", reflowOverflow);
+  }
+
   function installMobileMore() {
     const nav = document.querySelector(".tab-bar-nav");
     if (!nav || document.getElementById("mobile-more-btn")) return;
@@ -339,7 +473,10 @@ function elementById<T extends HTMLElement>(id: string): T {
     more.addEventListener("click", () => {
       const open = menu.classList.toggle("is-open");
       more.setAttribute("aria-expanded", String(open));
-      if (open) menu.querySelector<HTMLElement>('[role="menuitem"]')?.focus();
+      if (open) {
+        anchorMenu(more, menu);
+        menu.querySelector<HTMLElement>('[role="menuitem"]')?.focus();
+      }
     });
     document.addEventListener("click", (event) => {
       if (!(event.target instanceof Node) || (!menu.contains(event.target) && !more.contains(event.target))) closeMore();
@@ -404,6 +541,7 @@ function elementById<T extends HTMLElement>(id: string): T {
   api.init = function init() {
     ensureLiveRegions();
     installLayoutControls();
+    installTopBarOverflow();
     installMobileMore();
     installDecoderPicker();
     installDecoderBadges();

src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs

@@ -184,7 +184,10 @@ try {
   await page.locator('.tab[data-tab="main"]').click();
   assert.equal(new URL(page.url()).pathname, "/");
 
-  await page.locator('.tab[data-tab="about"]').click();
+  // About is an occasional destination, so it lives behind More at every
+  // width rather than in the operating tab strip.
+  await page.locator("#mobile-more-btn").click();
+  await page.locator('[data-navigate-tab="about"]').click();
   await page.locator("#tab-about").waitFor({ state: "visible" });
   assert.equal(new URL(page.url()).pathname, "/about");
 

src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/ui-core.test.mjs

@@ -143,4 +143,31 @@ ui.applyLayout("digital");
 assert.equal(document.body.dataset.operatorLayout, "compact");
 assert.equal(localStorage.getItem("trxOperatorLayout:rig-b"), "compact");
 
+// A layout seeds the collapsible sections but must not hold them there:
+// applyLayout runs on every rig-state refresh, so an operator who expands a
+// section a layout collapses by default had it shut again about once a second.
+const schedulerSection = new Element("details", document);
+schedulerSection.id = "scheduler-controls";
+const audioSection = new Element("details", document);
+audioSection.id = "audio-controls";
+
+ui.setActiveRig("rig-c");
+ui.applyLayout("compact");
+assert.equal(schedulerSection.open, false, "compact seeds the scheduler section closed");
+
+schedulerSection.open = true;             // operator expands it
+ui.applyLayout("compact");                // the next rig-state refresh
+assert.equal(schedulerSection.open, true, "re-applying the same layout leaves sections alone");
+ui.setActiveRig("rig-c");
+assert.equal(schedulerSection.open, true, "a rig-state refresh leaves sections alone");
+
+// Choosing a different layout is an explicit request for its defaults.
+ui.applyLayout("full");
+assert.equal(schedulerSection.open, true, "full seeds the scheduler section open");
+assert.equal(audioSection.open, true, "full seeds the audio section open");
+audioSection.open = false;
+ui.applyLayout("compact");
+assert.equal(audioSection.open, false, "compact seeds the audio section closed");
+assert.equal(schedulerSection.open, false, "switching layout reseeds every section");
+
 console.log("ui-core component tests passed");