The feed hears new posts as they come

decePub opens PrivaPub's streaming API (one WebSocket for the persona, its
token given as the socket's protocol, never in a URL) and subscribes to the
stream of the feed in view: home, a list, local, federated, a hashtag or
notifications. New posts wait behind the "new" button as polled ones did;
a deletion or an edit applies at once. Polling stays for the feeds PrivaPub
does not stream and for any feed while the socket is down, which opens again
after a pause growing to a minute. The e2e test sees a post made elsewhere
in seconds and its deletion take the card away.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

CLAUDE.md

@@ -242,8 +242,10 @@ supplies:
   are read on the first hover and kept for the session. PrivaPub's own host is the signed-in persona's account host,
   since the API may be reached under another name.
 - **The feed page** (`Pages/Index.razor`): `FeedTabs`, `Content` (the card, which does its own actions), `Composer`,
-  `GlobePanel`. Older pages load as the end comes near (`wwwroot/js/feed.js`); newer ones are polled every 45 s while
-  the page is visible (PrivaPub has no streaming) and wait behind a "new" button.
+  `GlobePanel`. Older pages load as the end comes near (`wwwroot/js/feed.js`). Newer ones come through PrivaPub's
+  streaming API (`Services/StreamingService.cs`: one WebSocket, the persona's token as its protocol, never in a URL)
+  for home, lists, local, federated, hashtags and notifications, and wait behind a "new" button; a deletion or an edit
+  it tells applies at once. Other feeds, and any feed while the stream is down, are polled every 45 s while visible.
 - **The globe** (`wwwroot/js/globe.js`, an ES module imported by `GlobePanel`) runs on globe.gl, vendored in
   `wwwroot/vendor/globe/` with its textures and `countries.json` (`SOURCES.md` has versions, licences and hashes; the
   service worker never precaches it). It looks at the spherical mean of the located posts in view, pulses and draws an