Follow-up to social-feed. Adds real ActivityPub: per-user actor
objects, WebFinger, signed inbox/outbox, push delivery on local
activity create, signed outbox-poll for remote trails actors.
Asymmetric scope keeps v1 small:
- Inbound: anyone (Mastodon, Pleroma, …) can follow a trails user
and receive their public activities via push delivery.
- Outbound: trails users can follow other *trails* instances only.
Following Mastodon/Pleroma/Misskey is refused at the API layer
with a clear "v1 limitation" message.
This avoids the engineering tar pit of robustly parsing arbitrary AP
vocabulary (Notes with attachments, polls, mentions, content warnings,
threads) while still delivering the core federation pitch.
Capabilities:
- New: social-federation
- Modified: social-follows (remote follows + Pending lifecycle)
- Modified: public-profiles (Pending button state, actor object gate)
- Modified: infrastructure (Fedify dep, key management runbook)
- Modified: security-hardening (HTTP Signatures, signed-fetch policy)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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