README: list miniflux + news-digest + memos + task-board in Current stacks

These four ana-docker stacks were missing from the discoverability
index — readers landing on the README couldn't find them without
walking stacks/. Found via /tend-docs.

README.md

@@ -71,6 +71,8 @@ Per-host snapshots of the running system live under `servers/<host>/system-detai
 **Anaheim non-GPU (ana-docker):**
 - `traefik`, `crowdsec`, `gitea`, `vaultwarden`, `synapse`, `seafile`, `searxng`, `openwebui`, `sillytavern`, `mailrise`, `rustdesk`, `dockge`, `it-tools`
 - (`mattermost` retired 2026-04-21 — compose dir may still linger, containers gone)
+- Notes / feeds: `miniflux` (RSS, 8080), `news-digest` (twice-daily LLM-curated brief, 8181, multi-tenant via `scripts/add-digest-user.sh`), `memos` (note server, 5230)
+- Assistant tooling: `task-board` (MCP + dashboard for assistant task state, 7878)
 - Fleet services: `beszel` (metrics hub, port 8090), `dozzle-hub` (log viewer, 8088), `backrest` (restic UI, 9898)
 - Backup target: `rest-server-ana` on port 8000