refactor(presentation): pure HTTP library — remove concrete adapter deps and binary

crates/presentation/src/state.rs

@@ -1,6 +1,5 @@
 use std::sync::Arc;
 use domain::ports::*;
-use activitypub_base::ApFederationConfig;
 
 #[derive(Clone)]
 pub struct AppState {
@@ -20,5 +19,4 @@ pub struct AppState {
     pub auth:          Arc<dyn AuthService>,
     pub hasher:        Arc<dyn PasswordHasher>,
     pub events:        Arc<dyn EventPublisher>,
-    pub fed_config:    ApFederationConfig,
 }