fix(street-level): reconnect the panel once the data manager attaches, so a switch-on opens it

The panel connected before the shell had its data manager, so it never
heard switch-on requests and a user switch-on left it collapsed.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/ui/shellLifetime.test.mjs

@@ -80,6 +80,7 @@ function bindings(t) {
     hud: { attachDataManager() {} },
     _contextControls: { connect() {} },
     _cctvControls: { connect() {} }, _radioControls: { connect() {} },
+    _streetLevelControls: { connects: 0, connect() { this.connects += 1; } },
   };
   const owner = new LayerBindings({
     viewer: {}, services: {}, readControls: () => controls,
@@ -97,7 +98,7 @@ function bindings(t) {
       subscribe() { events.push([id, 'subscribe']); return () => events.push([id, 'unsubscribe']); },
     };
   }
-  return { owner, manager, events };
+  return { owner, manager, events, controls };
 }
 
 test('manager replacement releases Directions even when the new manager has no route layer', (t) => {
@@ -116,6 +117,13 @@ test('manager replacement releases Directions even when the new manager has no r
   assert.equal(events.length, count);
 });
 
+test('attaching the manager reconnects Street Level, so its switch-on requests reach the panel', (t) => {
+  const { owner, manager, controls } = bindings(t);
+  owner.attachDataManager(manager('first'));
+  assert.equal(controls._streetLevelControls.connects, 1);
+  owner.stop(); owner.disconnect();
+});
+
 test('camera-entry listeners are removed before any asynchronous layer cleanup', (t) => {
   const { owner } = bindings(t);
   let changes = 0;