docs(hub-ui): explain dock restore trust gate

Author: dvcolomban

packages/hub-ui/src/client/state/context.ts

@@ -640,6 +640,7 @@ export async function createDocksContext(
   // the captured session intent.
   // `switchEntry` then consumes the persisted iframe route when the view boots.
   const restoreAfterInitialization = async (): Promise<void> => {
+    // The authorization gate can still clear the live session on reload, so restore only after it settles.
     await waitUntilTrusted()
 
     const restoreDockId = restoreIntent.selectedDockId