Phase 3-5 of ActivityPub integration:
- Federation handlers: post.published, calendar_entry.created, product.listed
→ publish_activity() for AP outbox
- AP delivery handler: federation.activity_created → sign + POST to follower
inboxes with HTTP Signatures
- IPFS storage wired into publish_activity() (best-effort)
- Anchoring utility: merkle trees + OpenTimestamps Bitcoin timestamping
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add typed service contracts (Protocols + frozen DTOs) in shared/contracts/
for cross-domain communication. Each domain exposes a service interface
(BlogService, CalendarService, MarketService, CartService) backed by SQL
implementations in shared/services/. A singleton registry with has() guards
enables composable startup — apps register their own domain service and
stubs for absent domains.
Absorbs glue layer: navigation, relationships, event handlers (login,
container, order) now live in shared/ with has()-guarded service calls.
Factory gains domain_services_fn parameter for per-app service registration.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
