New artifacts appear at the top of the feed without a manual refresh.
- GET /feed/updates (session-authed): new artifacts since a timestamp marker,
owner-scoped and filter-aware (source/label/kind/q), returned as row HTML.
- Feed JS polls every 5s, paused while the tab is hidden (immediate poll on
refocus). Prepends new rows into today's group without touching the selected
row or the preview iframe — what you're reading stays put and selected.
- Fresh rows show "now", aging into their real time after ~3 min; brief
highlight on arrival.
- Extracted _artifact_rows.html partial, shared by the day-group render and the
updates endpoint, so live rows match exactly.
- Polling chosen over SSE/WebSockets: zero infra on sync-WSGI + SQLite (see
planning/next_steps for the SSE upgrade path). 142 tests pass; feed page +
endpoint verified.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
