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/playwright.config.ts

@@ -4,8 +4,8 @@ import { defineConfig, devices } from "@playwright/test";
  * E2E characterization (golden-master) net for the Platform refactor.
  *
  * Target (PW_BASE_URL): defaults to the baked localdev stack on :8080 (production-faithful,
- * same-origin, no HMR/WS gaps). Point it at http://localhost:5173 for the fast Vite loop — all
- * five characterization flows are proxy-safe (none use the WebSocket).
+ * same-origin, no HMR gaps). Point it at http://localhost:5173 for the fast Vite loop — all
+ * five characterization flows are proxy-safe.
  *
  * The stack must already be UP (owned by `siftlode dev`); there is deliberately no `webServer`.
  * `e2e/global.setup.ts` seeds the dedicated test account and logs in once, sharing the resulting