docs(comments): no WebSocket and no CI in the present tense

The chat cut removed the only WebSocket and CI went before it, but comments still leaned on both:
`?account=` was justified by the socket, job polling by an in-process WS registry, the e2e flows as
"proxy-safe (none use the WebSocket)", and pyrightconfig named a CI container the engine contract
test never checked. Each now says what holds today (the wallet gate, no push channel, the two
contract test halves, the image build's `npm ci`, the gate).

frontend/src/lib/store.ts

@@ -1,8 +1,8 @@
 import { useSyncExternalStore } from "react";
 
 // A minimal observable value shared across React components AND non-React code (the api
-// layer, websocket handlers, etc.). Replaces the hand-rolled `listeners`/`subscribe`/`emit`
-// triad that several modules each re-implemented slightly differently.
+// layer, the debug recorder, the error dialog, etc.). Replaces the hand-rolled
+// `listeners`/`subscribe`/`emit` triad that several modules each re-implemented slightly differently.
 export interface Store<T> {
   get(): T;
   set(next: T | ((prev: T) => T)): void;