fix(ui): pose stream WebSocket 401s when RUVIEW_API_TOKEN is set (#1461) (#1462)

websocket.service.js (used by the pose/event streams) opened a bare
`new WebSocket(url)` with no ADR-272 ticket exchange, unlike
sensing.service.js which already mints a ticket per connect. Since a
browser cannot set an Authorization header on a WebSocket upgrade, and
the server rejects a long-lived bearer passed as a query string
(CWE-598), the pose stream 401'd whenever auth was on — visible in the
Live Demo tab as "Failed to create WebSocket connection".

Fix: createWebSocketWithTimeout() now strips any `token` query param a
caller put on the URL (pose.service.js does this) and exchanges the
stored bearer for a single-use `?ticket=` via withWsTicket(), done at
this one choke point so every consumer (pose, events, training) and
every reconnect attempt gets a fresh ticket.

Second, smaller bug: pose-fusion/js/main.js auto-connected to a
hardcoded `ws://localhost:8765/ws/sensing`, but the Docker image serves
the sensing WebSocket on :3001 (the same 3000->3001 mapping
sensing.service.js already encodes) — the auto-connect dialed a port
nothing listens on. Reuses that port mapping and tickets both the
auto-connect and the manual "Connect" button.

Bumped the pose-fusion.html cache-buster (v=13 -> v=14) so browsers
actually fetch the updated main.js.

Adds ui/services/websocket.service.test.mjs (4 executed Node tests,
stubbed WebSocket/fetch/localStorage) covering: no-auth passthrough,
ticket exchange + bearer-never-in-URL, stray ?token= stripping, and the
pre-ADR-272 404 fallback. Wired into the CI "Run UI unit tests" step.

Reported with a verified fix in #1461 by wsc7r4zcj4-collab; this PR
implements the same fix against current main with an added regression
test.

Closes #1461

ui/services/websocket.service.js

@@ -2,6 +2,7 @@
 
 import { API_CONFIG, buildWsUrl } from '../config/api.config.js';
 import { backendDetector } from '../utils/backend-detector.js';
+import { withWsTicket } from './ws-ticket.js';
 
 export class WebSocketService {
   constructor() {
@@ -115,8 +116,19 @@ export class WebSocketService {
   }
 
   async createWebSocketWithTimeout(url) {
+    // ADR-272: the server gates /ws/* and /api/v1/stream/* behind bearer auth,
+    // and a browser cannot set an Authorization header on an upgrade request.
+    // Exchange the stored bearer for a single-use ?ticket= here — immediately
+    // before the socket opens, on every attempt — so reconnects each get a
+    // fresh ticket. Also strip any long-lived `token` param a caller put in
+    // the URL (e.g. pose.service.js): the bearer itself must never travel in
+    // a query string.
+    const urlObj = new URL(url);
+    urlObj.searchParams.delete('token');
+    const connectUrl = await withWsTicket(urlObj.toString());
+
     return new Promise((resolve, reject) => {
-      const ws = new WebSocket(url);
+      const ws = new WebSocket(connectUrl);
       const timeout = setTimeout(() => {
         ws.close();
         reject(new Error(`Connection timeout after ${this.config.connectionTimeout}ms`));