fix: dropdown menus use fixed positioning to escape overflow clipping

Dropdown menus in app-switcher and space-switcher were clipped by
overflow:hidden on .rstack-header__left (mobile). Changed from
position:absolute to position:fixed with dynamic getBoundingClientRect
positioning. Bumped shell asset versions to v=5 to bypass CF cache.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/shell.ts

@@ -54,7 +54,7 @@ export function renderShell(opts: ShellOptions): string {
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>🌌</text></svg>">
   <title>${escapeHtml(title)}</title>
-  <link rel="stylesheet" href="/shell.css?v=4">
+  <link rel="stylesheet" href="/shell.css?v=5">
   <style>
     /* When loaded inside an iframe (e.g. standalone domain redirecting back),
        hide the shell chrome — the parent rSpace page already provides it. */
@@ -94,7 +94,7 @@ export function renderShell(opts: ShellOptions): string {
   ${renderWelcomeOverlay()}
 
   <script type="module">
-    import '/shell.js?v=4';
+    import '/shell.js?v=5';
     // Provide module list to app switcher
     document.querySelector('rstack-app-switcher')?.setModules(${moduleListJSON});
 
@@ -355,7 +355,7 @@ export function renderExternalAppShell(opts: ExternalAppShellOptions): string {
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>🌌</text></svg>">
   <title>${escapeHtml(title)}</title>
-  <link rel="stylesheet" href="/shell.css?v=4">
+  <link rel="stylesheet" href="/shell.css?v=5">
   <style>
     html.rspace-embedded .rstack-header { display: none !important; }
     html.rspace-embedded .rstack-tab-row { display: none !important; }
@@ -398,7 +398,7 @@ export function renderExternalAppShell(opts: ExternalAppShellOptions): string {
   </div>
 
   <script type="module">
-    import '/shell.js?v=4';
+    import '/shell.js?v=5';
     document.querySelector('rstack-app-switcher')?.setModules(${moduleListJSON});
 
     const tabBar = document.querySelector('rstack-tab-bar');
@@ -581,7 +581,7 @@ export function renderModuleLanding(opts: ModuleLandingOptions): string {
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>${mod.icon}</text></svg>">
   <title>${escapeHtml(mod.name)} — rSpace</title>
-  <link rel="stylesheet" href="/shell.css?v=4">
+  <link rel="stylesheet" href="/shell.css?v=5">
   ${cssBlock}
   <script defer src="https://rdata.online/collect.js" data-website-id="6ee7917b-0ed7-44cb-a4c8-91037638526b"></script>
 </head>
@@ -601,7 +601,7 @@ export function renderModuleLanding(opts: ModuleLandingOptions): string {
   </header>
   ${bodyContent}
   <script type="module">
-    import '/shell.js?v=4';
+    import '/shell.js?v=5';
     document.querySelector('rstack-app-switcher')?.setModules(${moduleListJSON});
     try {
       var raw = localStorage.getItem('encryptid_session');

shared/components/rstack-app-switcher.ts

@@ -241,7 +241,12 @@ export class RStackAppSwitcher extends HTMLElement {
 
 		trigger.addEventListener("click", (e) => {
 			e.stopPropagation();
-			menu.classList.toggle("open");
+			const isOpen = menu.classList.toggle("open");
+			if (isOpen) {
+				const rect = trigger.getBoundingClientRect();
+				menu.style.top = `${rect.bottom + 6}px`;
+				menu.style.left = `${Math.max(4, rect.left)}px`;
+			}
 		});
 
 		// Prevent external links from closing the menu prematurely
@@ -298,10 +303,10 @@ const STYLES = `
 .caret { font-size: 0.7em; opacity: 0.6; }
 
 .menu {
-  position: absolute; top: 100%; left: 0; margin-top: 6px;
+  position: fixed; margin-top: 0;
   min-width: 300px; border-radius: 12px; overflow: hidden;
   overflow-y: auto; max-height: 70vh;
-  box-shadow: 0 8px 30px rgba(0,0,0,0.25); display: none; z-index: 200;
+  box-shadow: 0 8px 30px rgba(0,0,0,0.25); display: none; z-index: 10001;
 }
 .menu.open { display: block; }
 :host-context([data-theme="light"]) .menu {

shared/components/rstack-space-switcher.ts

@@ -100,9 +100,14 @@ export class RStackSpaceSwitcher extends HTMLElement {
 		trigger.addEventListener("click", async (e) => {
 			e.stopPropagation();
 			const isOpen = menu.classList.toggle("open");
-			if (isOpen && !this.#loaded) {
+			if (isOpen) {
-				await this.#loadSpaces();
+				const rect = trigger.getBoundingClientRect();
-				this.#renderMenu(menu, current);
+				menu.style.top = `${rect.bottom + 6}px`;
+				menu.style.left = `${Math.max(4, rect.left)}px`;
+				if (!this.#loaded) {
+					await this.#loadSpaces();
+					this.#renderMenu(menu, current);
+				}
 			}
 		});
 
@@ -689,10 +694,10 @@ const STYLES = `
 .caret { font-size: 0.7em; opacity: 0.6; }
 
 .menu {
-  position: absolute; top: 100%; left: 0; margin-top: 6px;
+  position: fixed; margin-top: 0;
   min-width: 260px; max-height: 400px; overflow-y: auto;
   border-radius: 12px; box-shadow: 0 8px 30px rgba(0,0,0,0.25);
-  display: none; z-index: 200;
+  display: none; z-index: 10001;
 }
 .menu.open { display: block; }
 :host-context([data-theme="light"]) .menu { background: white; border: 1px solid rgba(0,0,0,0.1); }