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/format.test.ts

@@ -133,7 +133,7 @@ describe("relativeFromMs", () => {
 // printed "1 234 567" (and a Hungarian UI in an English browser "1,234,567"). The case below asserts
 // BOTH languages and that the two differ, rather than comparing against the runtime's own default:
 // the default is whatever locale the machine running the suite has (Hungarian on the dev box, English
-// on a CI image), so a one-language assertion passes under the old bug on half the machines.
+// in the test image), so a one-language assertion passes under the old bug on half the machines.
 describe("formatNumber", () => {
   afterEach(() => {
     i18nStub.language = "en";