k-ap now emits OutboundFollowAccepted when remote accepts our follow.
Bridge maps it to FollowAccepted domain event. Worker handler looks up
the actor's outbox URL and calls import_remote_outbox. Previously the
accept was silent — no backfill happened, feed stayed empty.
- Removed event-publisher dependency from Cargo.lock and Cargo.toml.
- Introduced sqlite-federation crate with necessary dependencies and implementation.
- Updated activitypub crate to use new ActivityPubPort trait for better abstraction.
- Refactored event handling to utilize domain ports instead of direct dependencies.
- Adjusted presentation layer to accommodate new ActivityPub service structure.
- Removed unused test setup for ActivityPub service in favor of NoopActivityPubService.
- Cleaned up SQLite adapter to remove unnecessary dependencies and streamline functionality.
