feat(rfeeds): Phase 1+2 — RSS dashboard with rApp activity adapters & user feed profiles
Phase 1: External RSS/Atom import, manual posts, OPML import, combined
Atom 1.0 output feed, background sync loop, reshare curation.
Phase 2: 8 activity adapters (rcal, rtasks, rdocs, rnotes, rsocials,
rwallet, rphotos, rfiles) read Automerge docs directly — no circular
deps. Activity cache in FeedsDoc, configurable per-module toggles.
User feed profiles with personal Atom feeds at /user/{did}/feed.xml
subscribable cross-space via existing RSS import.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>