Wire shell dropdown to detected profiles

AppBar now dispatches shell path and args in the new-terminal event.
Pond stores pending shell options via setPendingShellOpts so the
terminal registry uses them when the pane mounts. The standalone app
calls get_available_shells to populate the dropdown on startup.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: nedtwigg

lib/src/components/Pond.tsx

@@ -32,6 +32,7 @@ import {
   toggleSessionTodo,
   destroyTerminal,
   swapTerminals,
+  setPendingShellOpts,
   type SessionStatus,
 } from '../lib/terminal-registry';
 import { resolvePanelElement, findPanelInDirection, findRestoreNeighbor, type DetachDirection } from '../lib/spatial-nav';
@@ -1690,10 +1691,17 @@ export function Pond({
 
   // Listen for external "new terminal" requests (e.g. from the standalone AppBar)
   useEffect(() => {
-    const handler = () => {
+    const handler = (e: Event) => {
       const api = apiRef.current;
       if (!api) return;
+      const detail = (e as CustomEvent).detail;
       const newId = generatePaneId();
+
+      // Store shell options so getOrCreateTerminal picks them up on mount
+      if (detail?.shell) {
+        setPendingShellOpts(newId, { shell: detail.shell, args: detail.args });
+      }
+
       const active = api.activePanel;
       let direction: 'right' | 'below' = 'right';
       if (active) {

standalone/src/AppBar.tsx

@@ -5,6 +5,7 @@ import { CaretDownIcon, MinusIcon, CornersOutIcon, CornersInIcon, XIcon, Termina
 export interface ShellEntry {
   name: string;
   path: string;
+  args?: string[];
 }
 
 interface AppBarProps {
@@ -95,7 +96,7 @@ function ShellDropdown({ shells }: { shells: ShellEntry[] }) {
 
   const handleSelect = useCallback((shell: ShellEntry) => {
     setOpen(false);
-    window.dispatchEvent(new CustomEvent('mouseterm:new-terminal', { detail: { shell: shell.path } }));
+    window.dispatchEvent(new CustomEvent('mouseterm:new-terminal', { detail: { shell: shell.path, args: shell.args } }));
   }, []);
 
   // Close on click outside

standalone/src/main.tsx

@@ -29,12 +29,12 @@ async function bootstrap() {
   startUpdateCheck();
 
   // Fetch app bar data from Rust backend
-  const [homeDir, defaultShell] = await Promise.all([
+  const [homeDir, detectedShells] = await Promise.all([
     invoke<string>("get_project_dir"),
-    invoke<ShellEntry>("get_default_shell"),
+    invoke<ShellEntry[]>("get_available_shells"),
   ]);
   const projectDir = homeDir; // For now, project dir defaults to home
-  const shells: ShellEntry[] = [defaultShell];
+  const shells: ShellEntry[] = detectedShells.length > 0 ? detectedShells : [{ name: 'shell', path: '' }];
 
   createRoot(document.getElementById("root")!).render(
     <StrictMode>