Shell 1.9.4: header menus open where their button is, folded bar or not; ProdCom 1.3.3 keeps its filter on a narrow tile

A tile's dropdown menus (ProdCom's Channels, the Timers menu) opened but
never showed under a folded-away title bar — in fullscreen, or with
auto-hide on. The bar carries a backdrop-filter and a transform while
folded, and either one makes a fixed-positioned descendant position
itself against the bar instead of the viewport: the menu landed a
screen-height below its button, inside the tile's overflow. A tile near
the top of the screen showed a misplaced menu; anything lower showed
nothing at all.

The shell now hosts every header menu on the body, under an element
carrying the tile's data-module so a module's scoped CSS still reaches
its items; places it whole inside the viewport; holds a folded bar open
while one of its menus is open (the pointer has to travel down into the
menu); and marks the open menu's button the way the gear is marked.

ProdCom: seven controls need ~175 px of bar, and the shell clips what a
narrow tile cannot fit — the Channels button went with the rest. Below
380 px the six secondary controls fold into a ⋯ menu offering the same
actions, so the filter is the last thing to go.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

public/shell.js

@@ -639,8 +639,10 @@ function buildTile(tile) {
   el.addEventListener('pointermove', (ev) => {
     if (!headIsOff(tile)) return;
     // Mid-drag the tile moves under the pointer, and mid-resize the edges do
-    // — neither is a moment to take the bar away.
+    // — neither is a moment to take the bar away. Nor is an open header
+    // menu, which hangs below the bar and is about to be pointed at.
     if (el.classList.contains('dragging') || el.classList.contains('resizing')) return;
+    if (el.classList.contains('menu-open')) return;
     const y = ev.clientY - el.getBoundingClientRect().top;
     const shown = el.classList.contains('head-peek');
     // It takes less to hold the bar open than to open it, so a bar that
@@ -651,6 +653,7 @@ function buildTile(tile) {
 
   el.addEventListener('pointerleave', () => {
     if (el.classList.contains('dragging') || el.classList.contains('resizing')) return;
+    if (el.classList.contains('menu-open')) return; // the pointer is on its way to the menu
     el.classList.remove('head-peek');
   });
 
@@ -658,7 +661,7 @@ function buildTile(tile) {
   applyHeadState(tile, el);
   grid.appendChild(el);
 
-  const entry = { el, body, dot, titleEl: title, controls, instance: null };
+  const entry = { el, body, dot, titleEl: title, controls, instance: null, openMenus: new Set() };
   tileEls.set(tile.id, entry);
   applyRect(tile);
 
@@ -1416,34 +1419,60 @@ function buildModuleApi(tile, man, entry) {
         menu.className = 'tile-menu';
         menu.hidden = true;
 
+        /* The menu lives on the body, not in the bar. A folded-away bar
+           (auto-hide, fullscreen) carries a backdrop-filter and a transform,
+           and either one makes a fixed-positioned descendant position
+           itself against the bar instead of the viewport — the menu landed
+           a screen-height below its button, inside the tile's overflow, and
+           never showed. Its host carries the tile's data-module so the
+           module's scoped CSS still reaches the items. */
+        const host = document.createElement('div');
+        host.className = 'tile-menu-host';
+        if (man) host.dataset.module = man.id;
+        host.appendChild(menu);
+
+        const setOpen = (on) => {
+          if (on === !menu.hidden) return;
+          menu.hidden = !on;
+          btn.classList.toggle('is-open', on);
+          if (on) entry.openMenus.add(menu);
+          else entry.openMenus.delete(menu);
+          // an open menu holds a folded-away bar out; when the last one
+          // closes with the pointer elsewhere, the bar goes back
+          entry.el.classList.toggle('menu-open', entry.openMenus.size > 0);
+          if (!on && !entry.openMenus.size && !entry.el.matches(':hover')) entry.el.classList.remove('head-peek');
+        };
         const open = () => {
           if (typeof build === 'function') {
             menu.innerHTML = '';
             build(menu);
           }
-          menu.hidden = false;
-          // fixed positioning (escapes the tile's overflow): under the
-          // button, right-aligned, clamped to the viewport
+          setOpen(true);
+          // under the button, right-aligned, kept whole inside the viewport
           const r = btn.getBoundingClientRect();
-          menu.style.top = Math.min(r.bottom + 6, window.innerHeight - 80) + 'px';
           menu.style.left = '0px';
+          menu.style.top = '0px';
           const w = menu.offsetWidth;
+          const h = menu.offsetHeight;
+          menu.style.top = Math.max(8, Math.min(r.bottom + 6, window.innerHeight - h - 8)) + 'px';
           menu.style.left = Math.max(8, Math.min(r.right - w, window.innerWidth - w - 8)) + 'px';
         };
         btn.addEventListener('click', (e) => {
           e.stopPropagation();
           if (menu.hidden) open();
-          else menu.hidden = true;
+          else setOpen(false);
         });
         const onDocClick = (e) => {
-          if (!menu.hidden && !menu.contains(e.target) && !btn.contains(e.target)) menu.hidden = true;
+          if (!menu.hidden && !menu.contains(e.target) && !btn.contains(e.target)) setOpen(false);
         };
         document.addEventListener('click', onDocClick);
         docListeners.add(onDocClick);
 
-        wrap.append(btn, menu);
+        wrap.append(btn);
         entry.controls.appendChild(wrap);
+        document.body.appendChild(host);
         headerEls.add(wrap);
+        headerEls.add(host);
         return {
           button: btn,
           menu,
@@ -1451,7 +1480,7 @@ function buildModuleApi(tile, man, entry) {
             btn.textContent = text;
           },
           close() {
-            menu.hidden = true;
+            setOpen(false);
           },
         };
       },
@@ -1463,6 +1492,8 @@ function buildModuleApi(tile, man, entry) {
       for (const handle of [...sseHandles]) handle.close();
       for (const el of headerEls) el.remove();
       headerEls.clear();
+      entry.openMenus.clear();
+      entry.el.classList.remove('menu-open');
       for (const fn of docListeners) document.removeEventListener('click', fn);
       docListeners.clear();
     },

public/style.css

@@ -445,8 +445,9 @@ body.menu-hidden #topbar {
 }
 .tile-dd { position: relative; display: inline-flex; }
 
-/* a module header menu — fixed-positioned by the shell so the tile's
-   overflow:hidden can't clip it */
+/* a module header menu — hosted on the body (shell.js addMenu) so neither
+   the tile's overflow nor a folded-away bar's backdrop-filter can touch it */
+.tile-menu-host { display: contents; }
 .tile-menu {
   position: fixed;
   z-index: 70;