fix(federation): fix 27 AP bugs, gaps, and inconsistencies

Round 1 — 18 bug fixes: - remote likes/boosts now persist in engagement tables - intern_remote_actor uses name@domain, expanded username to VARCHAR(255) - PgRemoteActorRepository upsert/find now handles all fields - update_following_status no longer a no-op, count_followers counts all - accept/reject follow publishes event before DB mark (atomicity) - fetch_outbox_page follows pagination via next links - actor URL canonicalized to /users/{uuid} - content_to_html escapes single quotes - WebFinger accepts application/ld+json type - try_from_ap accepts Article and Page object types - feed SQL uses parameterized viewer UUID instead of format! - content cap raised from 500 to 5000 chars - also_known_as changed from Option<String> to Vec<String> - connections fetch always triggers from page 1 Round 2 — 9 gap fixes: - on_announce_removed handler deletes boost row on Undo(Announce) - on_update handles Person/Service/Group actor profile updates - sync_remote_actor_to_user syncs remote_actors → users on create/update - FederationBlockPort: block_by_username sends Block activity to remote - domain RemoteActor gains inbox_url, shared_inbox_url fields - remote_actors attachment column (JSONB) with read/write - .well-known/host-meta endpoint - 256KB body limit on AP inbox routes - outbox cleanup job (7-day retention, hourly sweep)
2026-05-29 11:28:40 +02:00
parent f9de21dcfa
commit 84edf58de6
32 changed files with 565 additions and 142 deletions
--- a/crates/adapters/activitypub/src/handler.rs
+++ b/crates/adapters/activitypub/src/handler.rs
@@ -10,7 +10,7 @@ use url::Url;
 use crate::note::{ThoughtNote, ThoughtNoteInput};
 use crate::port::{AcceptNoteInput, ActivityPubRepository};
 use crate::urls::ThoughtsUrls;
-use domain::ports::{EventPublisher, TagRepository};
+use domain::ports::{BoostRepository, EventPublisher, LikeRepository, TagRepository};
 use domain::value_objects::UserId;
 use k_ap::{ApContentReader, ApObjectHandler};

@@ -19,6 +19,8 @@ pub struct ThoughtsObjectHandler {
    urls: ThoughtsUrls,
    event_publisher: Option<Arc<dyn EventPublisher>>,
    tag_repo: Arc<dyn TagRepository>,
+    likes: Arc<dyn LikeRepository>,
+    boosts: Arc<dyn BoostRepository>,
 }

 impl ThoughtsObjectHandler {
@@ -27,12 +29,16 @@ impl ThoughtsObjectHandler {
        base_url: &str,
        event_publisher: Option<Arc<dyn EventPublisher>>,
        tag_repo: Arc<dyn TagRepository>,
+        likes: Arc<dyn LikeRepository>,
+        boosts: Arc<dyn BoostRepository>,
    ) -> Self {
        Self {
            repo,
            urls: ThoughtsUrls::new(base_url),
            event_publisher,
            tag_repo,
+            likes,
+            boosts,
        }
    }
 }
@@ -106,6 +112,10 @@ impl ApObjectHandler for ThoughtsObjectHandler {
            .intern_remote_actor(actor_url.as_str())
            .await
            .map_err(|e| anyhow!("{e}"))?;
+        let _ = self
+            .repo
+            .sync_remote_actor_to_user(actor_url.as_str())
+            .await;

        let as_public = "https://www.w3.org/ns/activitystreams#Public";
        let in_to = note.to.iter().any(|s| s == as_public);
@@ -194,17 +204,50 @@ impl ApObjectHandler for ThoughtsObjectHandler {
    async fn on_update(
        &self,
        ap_id: &Url,
-        _actor_url: &Url,
+        actor_url: &Url,
        object: serde_json::Value,
    ) -> Result<()> {
-        let Some((note, _)) = ThoughtNote::try_from_ap(object) else {
-            tracing::debug!(ap_id = %ap_id, "on_update: skipping non-Note object");
-            return Ok(());
-        };
-        self.repo
-            .apply_note_update(ap_id.as_str(), &note.content)
-            .await
-            .map_err(|e| anyhow!("{e}"))
+        let obj_type = object.get("type").and_then(|v| v.as_str()).unwrap_or("");
+        match obj_type {
+            "Note" | "Article" | "Page" => {
+                let Some((note, _)) = ThoughtNote::try_from_ap(object) else {
+                    return Ok(());
+                };
+                self.repo
+                    .apply_note_update(ap_id.as_str(), &note.content)
+                    .await
+                    .map_err(|e| anyhow!("{e}"))
+            }
+            "Person" | "Service" | "Application" | "Group" | "Organization" => {
+                let display_name = object.get("name").and_then(|v| v.as_str());
+                let avatar_url = object
+                    .get("icon")
+                    .and_then(|v| v.get("url"))
+                    .and_then(|v| v.as_str());
+                self.repo
+                    .update_remote_actor_display(
+                        &self
+                            .repo
+                            .find_remote_actor_id(actor_url.as_str())
+                            .await
+                            .map_err(|e| anyhow!("{e}"))?
+                            .ok_or_else(|| anyhow!("unknown actor"))?,
+                        display_name,
+                        avatar_url,
+                    )
+                    .await
+                    .map_err(|e| anyhow!("{e}"))?;
+                let _ = self
+                    .repo
+                    .sync_remote_actor_to_user(actor_url.as_str())
+                    .await;
+                Ok(())
+            }
+            _ => {
+                tracing::debug!(ap_id = %ap_id, obj_type, "on_update: skipping");
+                Ok(())
+            }
+        }
    }

    async fn on_delete(&self, ap_id: &Url, _actor_url: &Url) -> Result<()> {
@@ -245,14 +288,24 @@ impl ApObjectHandler for ThoughtsObjectHandler {
        let actor_user_id = match actor_user_id {
            Some(id) => id,
            None => {
-                tracing::debug!(actor = %actor_url, "on_like: remote actor not interned, skipping notification");
+                tracing::debug!(actor = %actor_url, "on_like: remote actor not interned, skipping");
                return Ok(());
            }
        };

+        let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
+        let like_id = domain::value_objects::LikeId::new();
+
+        let like = domain::models::social::Like {
+            id: like_id.clone(),
+            user_id: actor_user_id.clone(),
+            thought_id: thought_id.clone(),
+            ap_id: Some(object_url.to_string()),
+            created_at: Utc::now(),
+        };
+        let _ = self.likes.save(&like).await;
+
        if let Some(ep) = &self.event_publisher {
-            let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
-            let like_id = domain::value_objects::LikeId::new();
            ep.publish(&domain::events::DomainEvent::LikeAdded {
                like_id,
                user_id: actor_user_id,
@@ -294,10 +347,13 @@ impl ApObjectHandler for ThoughtsObjectHandler {
            }
        };

+        let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
+        let _ = self.likes.delete(&actor_user_id, &thought_id).await;
+
        if let Some(ep) = &self.event_publisher {
            ep.publish(&domain::events::DomainEvent::LikeRemoved {
                user_id: actor_user_id,
-                thought_id: domain::value_objects::ThoughtId::from_uuid(thought_uuid),
+                thought_id,
            })
            .await
            .map_err(|e| anyhow!("{e}"))?;
@@ -369,9 +425,19 @@ impl ApObjectHandler for ThoughtsObjectHandler {
            None => return Ok(()),
        };

+        let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
+        let boost_id = domain::value_objects::BoostId::new();
+
+        let boost = domain::models::social::Boost {
+            id: boost_id.clone(),
+            user_id: actor_user_id.clone(),
+            thought_id: thought_id.clone(),
+            ap_id: Some(object_url.to_string()),
+            created_at: Utc::now(),
+        };
+        let _ = self.boosts.save(&boost).await;
+
        if let Some(ep) = &self.event_publisher {
-            let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
-            let boost_id = domain::value_objects::BoostId::new();
            ep.publish(&domain::events::DomainEvent::BoostAdded {
                boost_id,
                user_id: actor_user_id,
@@ -384,6 +450,44 @@ impl ApObjectHandler for ThoughtsObjectHandler {
        Ok(())
    }

+    async fn on_announce_removed(&self, object_url: &Url, actor_url: &Url) -> Result<()> {
+        let thought_uuid = object_url
+            .path()
+            .strip_prefix(THOUGHTS_PATH_PREFIX)
+            .and_then(|s| s.split('/').next())
+            .and_then(|s| uuid::Uuid::parse_str(s).ok());
+
+        let thought_uuid = match thought_uuid {
+            Some(u) => u,
+            None => return Ok(()),
+        };
+
+        let actor_user_id = self
+            .repo
+            .find_remote_actor_id(actor_url.as_str())
+            .await
+            .map_err(|e| anyhow!("{e}"))?;
+
+        let actor_user_id = match actor_user_id {
+            Some(id) => id,
+            None => return Ok(()),
+        };
+
+        let thought_id = domain::value_objects::ThoughtId::from_uuid(thought_uuid);
+        let _ = self.boosts.delete(&actor_user_id, &thought_id).await;
+
+        if let Some(ep) = &self.event_publisher {
+            ep.publish(&domain::events::DomainEvent::BoostRemoved {
+                user_id: actor_user_id,
+                thought_id,
+            })
+            .await
+            .map_err(|e| anyhow!("{e}"))?;
+        }
+
+        Ok(())
+    }
+
    async fn on_announce_of_remote(&self, _object_url: &Url, _actor_url: &Url) -> Result<()> {
        Ok(())
    }
--- a/crates/adapters/activitypub/src/note/mod.rs
+++ b/crates/adapters/activitypub/src/note/mod.rs
@@ -74,11 +74,15 @@ pub struct ThoughtNoteInput {

 impl ThoughtNote {
    /// Returns `(note, extensions)` if `value` is a Note object, `None` otherwise.
-    pub fn try_from_ap(value: serde_json::Value) -> Option<(Self, Option<serde_json::Value>)> {
-        if value.get("type").and_then(|v| v.as_str()) != Some("Note") {
+    pub fn try_from_ap(mut value: serde_json::Value) -> Option<(Self, Option<serde_json::Value>)> {
+        let obj_type = value.get("type").and_then(|v| v.as_str());
+        if !matches!(obj_type, Some("Note" | "Article" | "Page")) {
            return None;
        }
        let extensions = extract_extensions(&value);
+        if let Some(obj) = value.as_object_mut() {
+            obj.insert("type".to_string(), serde_json::json!("Note"));
+        }
        serde_json::from_value(value)
            .ok()
            .map(|note| (note, extensions))
--- a/crates/adapters/activitypub/src/port.rs
+++ b/crates/adapters/activitypub/src/port.rs
@@ -101,6 +101,9 @@ pub trait ActivityPubRepository: Send + Sync {
    /// Returns None for users that have not been federated.
    async fn get_actor_ap_urls(&self, user_id: &UserId)
        -> Result<Option<ActorApUrls>, DomainError>;
+
+    /// Sync display_name + avatar_url from remote_actors to users table.
+    async fn sync_remote_actor_to_user(&self, actor_ap_url: &str) -> Result<(), DomainError>;
 }

 #[async_trait]
--- a/crates/adapters/activitypub/src/service.rs
+++ b/crates/adapters/activitypub/src/service.rs
@@ -23,7 +23,8 @@ fn content_to_html(text: &str) -> String {
        .replace('&', "&amp;")
        .replace('<', "&lt;")
        .replace('>', "&gt;")
-        .replace('"', "&quot;");
+        .replace('"', "&quot;")
+        .replace('\'', "&#39;");
    let paragraphs: Vec<&str> = escaped.split('\n').filter(|s| !s.is_empty()).collect();
    if paragraphs.is_empty() {
        format!("<p>{}</p>", escaped)
@@ -116,13 +117,17 @@ fn k_ap_actor_to_domain(a: k_ap::RemoteActor) -> DomainRemoteActor {
        last_fetched_at: chrono::Utc::now(),
        bio: a.bio,
        banner_url: a.banner_url,
-        also_known_as: a.also_known_as.into_iter().next(),
+        also_known_as: a.also_known_as,
        followers_url: a.followers_url,
        following_url: a.following_url,
+        inbox_url: Some(a.inbox_url),
+        shared_inbox_url: a.shared_inbox_url,
        attachment: vec![],
    }
 }

+// TODO: these fetches are unsigned — fails on instances with authorized-fetch (Secure Mode).
+// Fix requires exposing k-ap's signed HTTP client.
 async fn resolve_actor_profiles_from_urls(
    urls: Vec<String>,
 ) -> Vec<domain::models::actor_connection_summary::ActorConnectionSummary> {
@@ -201,7 +206,9 @@ async fn webfinger_resolve_actor_url(handle: &str) -> anyhow::Result<String> {
        .and_then(|links| {
            links.iter().find(|l| {
                l["rel"].as_str() == Some("self")
-                    && l["type"].as_str() == Some("application/activity+json")
+                    && l["type"].as_str().is_some_and(|t| {
+                        t == "application/activity+json" || t.starts_with("application/ld+json")
+                    })
            })
        })
        .and_then(|l| l["href"].as_str())
@@ -415,11 +422,8 @@ impl FederationSchedulerPort for ApFederationAdapter {
        actor_ap_url: &str,
        collection_url: &str,
        connection_type: &str,
-        page: u32,
+        _page: u32,
    ) -> Result<(), DomainError> {
-        if page != 1 {
-            return Ok(());
-        }
        let actor = actor_ap_url.to_string();
        let collection = collection_url.to_string();
        let conn_type = connection_type.to_string();
@@ -536,9 +540,15 @@ impl FederationLookupPort for ApFederationAdapter {
            last_fetched_at: chrono::Utc::now(),
            bio: actor.bio,
            banner_url: actor.banner_url.as_ref().map(|u| u.to_string()),
-            also_known_as: actor.also_known_as.into_iter().next(),
+            also_known_as: actor
+                .also_known_as
+                .into_iter()
+                .map(|u| u.to_string())
+                .collect(),
            followers_url: actor.followers_url.as_ref().map(|u| u.to_string()),
            following_url: actor.following_url.as_ref().map(|u| u.to_string()),
+            inbox_url: None,
+            shared_inbox_url: None,
            attachment: actor
                .attachment
                .into_iter()
@@ -599,20 +609,36 @@ impl FederationFetchPort for ApFederationAdapter {
            .await
            .map_err(|e| DomainError::ExternalService(e.to_string()))?;

-        let url = base["first"]
+        let first_url = base["first"]
            .as_str()
            .map(|s| s.to_string())
-            .unwrap_or_else(|| format!("{}?page={}", outbox_url, page));
+            .unwrap_or_else(|| format!("{}?page=1", outbox_url));

-        let resp: serde_json::Value = client
-            .get(&url)
-            .header("Accept", "application/activity+json, application/ld+json")
-            .send()
-            .await
-            .map_err(|e| DomainError::ExternalService(e.to_string()))?
-            .json()
-            .await
-            .map_err(|e| DomainError::ExternalService(e.to_string()))?;
+        let mut current_url = first_url;
+        let mut hops = 0u32;
+        let target_page = page.max(1);
+        let max_hops = 10u32;
+
+        let resp: serde_json::Value = loop {
+            let page_resp: serde_json::Value = client
+                .get(&current_url)
+                .header("Accept", "application/activity+json, application/ld+json")
+                .send()
+                .await
+                .map_err(|e| DomainError::ExternalService(e.to_string()))?
+                .json()
+                .await
+                .map_err(|e| DomainError::ExternalService(e.to_string()))?;
+
+            hops += 1;
+            if hops >= target_page || hops >= max_hops {
+                break page_resp;
+            }
+            match page_resp["next"].as_str() {
+                Some(next) => current_url = next.to_string(),
+                None => break page_resp,
+            }
+        };

        let empty = vec![];
        let items = resp["orderedItems"].as_array().unwrap_or(&empty);
@@ -850,4 +876,33 @@ impl FederationFollowRequestPort for ApFederationAdapter {
    }
 }

+// ── FederationBlockPort ──────────────────────────────────────────────────────
+
+#[async_trait]
+impl domain::ports::FederationBlockPort for ApFederationAdapter {
+    async fn block_remote(&self, local_user_id: &UserId, handle: &str) -> Result<(), DomainError> {
+        let actor_url = webfinger_resolve_actor_url(handle)
+            .await
+            .map_err(|e| DomainError::ExternalService(e.to_string()))?;
+        self.inner
+            .block_actor(local_user_id.as_uuid(), &actor_url)
+            .await
+            .map_err(|e| DomainError::ExternalService(e.to_string()))
+    }
+
+    async fn unblock_remote(
+        &self,
+        local_user_id: &UserId,
+        handle: &str,
+    ) -> Result<(), DomainError> {
+        let actor_url = webfinger_resolve_actor_url(handle)
+            .await
+            .map_err(|e| DomainError::ExternalService(e.to_string()))?;
+        self.inner
+            .unblock_actor(local_user_id.as_uuid(), &actor_url)
+            .await
+            .map_err(|e| DomainError::ExternalService(e.to_string()))
+    }
+}
+
 // FederationActionPort is a blanket supertrait; no explicit impl needed.
--- a/crates/adapters/activitypub/src/urls/mod.rs
+++ b/crates/adapters/activitypub/src/urls/mod.rs
@@ -11,24 +11,24 @@ impl ThoughtsUrls {
        }
    }

-    pub fn user_url(&self, username: &str) -> Url {
-        Url::parse(&format!("{}/users/{}", self.base_url, username)).expect("valid URL")
+    pub fn user_url(&self, id: &str) -> Url {
+        Url::parse(&format!("{}/users/{}", self.base_url, id)).expect("valid URL")
    }

    pub fn thought_url(&self, thought_id: uuid::Uuid) -> Url {
        Url::parse(&format!("{}/thoughts/{}", self.base_url, thought_id)).expect("valid URL")
    }

-    pub fn user_inbox(&self, username: &str) -> Url {
-        Url::parse(&format!("{}/users/{}/inbox", self.base_url, username)).expect("valid URL")
+    pub fn user_inbox(&self, id: &str) -> Url {
+        Url::parse(&format!("{}/users/{}/inbox", self.base_url, id)).expect("valid URL")
    }

-    pub fn user_outbox(&self, username: &str) -> Url {
-        Url::parse(&format!("{}/users/{}/outbox", self.base_url, username)).expect("valid URL")
+    pub fn user_outbox(&self, id: &str) -> Url {
+        Url::parse(&format!("{}/users/{}/outbox", self.base_url, id)).expect("valid URL")
    }

-    pub fn user_followers(&self, username: &str) -> Url {
-        Url::parse(&format!("{}/users/{}/followers", self.base_url, username)).expect("valid URL")
+    pub fn user_followers(&self, id: &str) -> Url {
+        Url::parse(&format!("{}/users/{}/followers", self.base_url, id)).expect("valid URL")
    }
 }

--- a/crates/adapters/postgres-federation/src/lib.rs
+++ b/crates/adapters/postgres-federation/src/lib.rs
@@ -222,13 +222,12 @@ impl FollowRepository for PostgresFederationRepository {
    }

    async fn count_followers(&self, local_user_id: uuid::Uuid) -> Result<usize> {
-        let n: i64 = sqlx::query_scalar(
-            "SELECT COUNT(*) FROM federation_followers WHERE local_user_id=$1 AND status='accepted'",
-        )
-        .bind(local_user_id)
-        .fetch_one(&self.pool)
-        .await
-        .map_err(|e| anyhow!(e))?;
+        let n: i64 =
+            sqlx::query_scalar("SELECT COUNT(*) FROM federation_followers WHERE local_user_id=$1")
+                .bind(local_user_id)
+                .fetch_one(&self.pool)
+                .await
+                .map_err(|e| anyhow!(e))?;
        Ok(n as usize)
    }

@@ -428,11 +427,24 @@ impl FollowRepository for PostgresFederationRepository {

    async fn update_following_status(
        &self,
-        _local_user_id: uuid::Uuid,
-        _remote_actor_url: &str,
-        _status: FollowingStatus,
+        local_user_id: uuid::Uuid,
+        remote_actor_url: &str,
+        status: FollowingStatus,
    ) -> Result<()> {
-        Ok(())
+        let s = match status {
+            FollowingStatus::Pending => "pending",
+            FollowingStatus::Accepted => "accepted",
+        };
+        sqlx::query(
+            "UPDATE federation_following SET status=$3 WHERE local_user_id=$1 AND remote_actor_url=$2",
+        )
+        .bind(local_user_id)
+        .bind(remote_actor_url)
+        .bind(s)
+        .execute(&self.pool)
+        .await
+        .map_err(|e| anyhow!(e))
+        .map(|_| ())
    }

    async fn get_following_outbox_url(
@@ -743,7 +755,7 @@ impl PostgresApUserRepository {
    }

    fn row_to_ap_user(&self, r: UserRow) -> ApUser {
-        let profile_url = url::Url::parse(&format!("{}/users/{}", self.base_url, r.username)).ok();
+        let profile_url = url::Url::parse(&format!("{}/users/{}", self.base_url, r.id)).ok();
        let avatar_url = r.avatar_url.and_then(|u| url::Url::parse(&u).ok());
        let banner_url = r.header_url.and_then(|u| url::Url::parse(&u).ok());
        ApUser {
--- a/crates/adapters/postgres/migrations/017_widen_username.sql
+++ b/crates/adapters/postgres/migrations/017_widen_username.sql
@@ -0,0 +1 @@
+ALTER TABLE users ALTER COLUMN username TYPE VARCHAR(255);
--- a/crates/adapters/postgres/migrations/018_federation_following_status.sql
+++ b/crates/adapters/postgres/migrations/018_federation_following_status.sql
@@ -0,0 +1,2 @@
+ALTER TABLE federation_following
+  ADD COLUMN IF NOT EXISTS status TEXT NOT NULL DEFAULT 'accepted';
--- a/crates/adapters/postgres/migrations/019_remote_actor_attachment.sql
+++ b/crates/adapters/postgres/migrations/019_remote_actor_attachment.sql
@@ -0,0 +1 @@
+ALTER TABLE remote_actors ADD COLUMN IF NOT EXISTS attachment JSONB DEFAULT '[]'::jsonb;
--- a/crates/adapters/postgres/src/activitypub/mod.rs
+++ b/crates/adapters/postgres/src/activitypub/mod.rs
@@ -1,7 +1,7 @@
 use crate::db_error::IntoDbResult;
 use async_trait::async_trait;

-const MAX_REMOTE_CONTENT_CHARS: usize = 500;
+const MAX_REMOTE_CONTENT_CHARS: usize = 5000;
 const THOUGHTS_PATH_PREFIX: &str = "/thoughts/";
 use chrono::{DateTime, Utc};
 use sqlx::PgPool;
@@ -155,24 +155,28 @@ impl ActivityPubRepository for PgActivityPubRepository {
            return Ok(id);
        }
        let new_id = uuid::Uuid::new_v4();
-        // Use the last path segment as username (e.g. /users/alice → "alice").
-        // Falls back to a random short id for long segments (e.g. UUID-based actor URLs).
-        // username column is VARCHAR(32).
-        let last_seg = url::Url::parse(actor_ap_url)
-            .ok()
+        let parsed = url::Url::parse(actor_ap_url).ok();
+        let domain_str = parsed
+            .as_ref()
+            .and_then(|u| u.host_str().map(|s| s.to_string()))
+            .unwrap_or_default();
+        let last_seg = parsed
            .and_then(|u| {
                u.path_segments()
                    .and_then(|mut s| s.next_back().map(|s| s.to_string()))
            })
            .unwrap_or_default();
-        let handle = if last_seg.is_empty() {
-            format!("remote_{}", &new_id.to_string()[..13])
-        } else if last_seg.len() <= 32 {
-            last_seg
+        let handle = if last_seg.is_empty() || domain_str.is_empty() {
+            format!("r_{}", &new_id.to_string()[..13])
        } else {
-            format!("remote_{}", &new_id.to_string()[..13])
+            let candidate = format!("{}@{}", last_seg, domain_str);
+            if candidate.len() <= 255 {
+                candidate
+            } else {
+                format!("r_{}", &new_id.to_string()[..13])
+            }
        };
-        sqlx::query(
+        let result = sqlx::query(
            "INSERT INTO users(id,username,email,password_hash,local,ap_id,created_at,updated_at)
             VALUES($1,$2,$3,'',false,$4,NOW(),NOW()) ON CONFLICT(ap_id) DO NOTHING",
        )
@@ -181,9 +185,24 @@ impl ActivityPubRepository for PgActivityPubRepository {
        .bind(format!("{}@remote", new_id))
        .bind(actor_ap_url)
        .execute(&self.pool)
-        .await
-        .into_domain()?;
-        // Re-fetch to get whichever id won the race
+        .await;
+
+        if result.is_err() {
+            let fallback = format!("r_{}", &new_id.to_string()[..13]);
+            let new_id2 = uuid::Uuid::new_v4();
+            sqlx::query(
+                "INSERT INTO users(id,username,email,password_hash,local,ap_id,created_at,updated_at)
+                 VALUES($1,$2,$3,'',false,$4,NOW(),NOW()) ON CONFLICT(ap_id) DO NOTHING",
+            )
+            .bind(new_id2)
+            .bind(&fallback)
+            .bind(format!("{}@remote", new_id2))
+            .bind(actor_ap_url)
+            .execute(&self.pool)
+            .await
+            .into_domain()?;
+        }
+
        self.find_remote_actor_id(actor_ap_url)
            .await?
            .ok_or_else(|| {
@@ -345,6 +364,19 @@ impl ActivityPubRepository for PgActivityPubRepository {
        .into_domain()
        .map(|opt| opt.map(|(ap_id, inbox_url)| ActorApUrls { ap_id, inbox_url }))
    }
+
+    async fn sync_remote_actor_to_user(&self, actor_ap_url: &str) -> Result<(), DomainError> {
+        sqlx::query(
+            "UPDATE users SET display_name = ra.display_name, avatar_url = ra.avatar_url, updated_at = NOW()
+             FROM remote_actors ra
+             WHERE users.ap_id = ra.url AND users.ap_id = $1 AND users.local = false",
+        )
+        .bind(actor_ap_url)
+        .execute(&self.pool)
+        .await
+        .into_domain()
+        .map(|_| ())
+    }
 }

 #[cfg(test)]
--- a/crates/adapters/postgres/src/feed/mod.rs
+++ b/crates/adapters/postgres/src/feed/mod.rs
@@ -113,14 +113,14 @@ impl<'a> FeedSqlBuilder<'a> {
        }
    }

-    fn select(&self) -> String {
+    fn select(&self, viewer_param: &str) -> String {
        let (viewer_cols, viewer_joins) = match self.viewer {
-            Some(uid) => (
+            Some(_) => (
                "(lv.thought_id IS NOT NULL) AS liked_by_viewer,
                 (bv.thought_id IS NOT NULL) AS boosted_by_viewer".to_string(),
                format!(
-                    "LEFT JOIN (SELECT thought_id FROM likes WHERE user_id='{uid}') lv ON lv.thought_id = t.id
-                     LEFT JOIN (SELECT thought_id FROM boosts WHERE user_id='{uid}') bv ON bv.thought_id = t.id"
+                    "LEFT JOIN (SELECT thought_id FROM likes WHERE user_id={viewer_param}) lv ON lv.thought_id = t.id
+                     LEFT JOIN (SELECT thought_id FROM boosts WHERE user_id={viewer_param}) bv ON bv.thought_id = t.id"
                ),
            ),
            None => (
@@ -164,13 +164,13 @@ impl<'a> FeedSqlBuilder<'a> {
        )
    }

-    fn fed_clause(&self) -> String {
+    fn fed_clause(&self, viewer_param: &str) -> String {
        match self.viewer {
-            Some(fid) => format!(
+            Some(_) => format!(
                " OR t.user_id IN (
                SELECT u2.id FROM users u2
                JOIN federation_following ff ON u2.ap_id = ff.remote_actor_url
-                WHERE ff.local_user_id = '{fid}'
+                WHERE ff.local_user_id = {viewer_param}
            )"
            ),
            None => String::new(),
@@ -217,7 +217,7 @@ impl<'a> FeedSqlBuilder<'a> {
        );
        let data = format!(
            "{} WHERE t.local=true AND t.visibility='public'{} {} LIMIT $1 OFFSET $2",
-            self.select(),
+            self.select("$3"),
            filter,
            order
        );
@@ -225,17 +225,16 @@ impl<'a> FeedSqlBuilder<'a> {
    }

    fn home(&self) -> (String, String) {
-        let fed = self.fed_clause();
        let filter = self.filter_sql();
        let order = self.order_sql();
-        let count  = format!(
+        let count = format!(
            "SELECT COUNT(*) FROM thoughts t WHERE (t.user_id=ANY($1){}) AND t.visibility != 'direct'{}",
-            fed, filter
+            self.fed_clause("$2"), filter
        );
        let data =
            format!(
            "{} WHERE (t.user_id=ANY($1){}) AND t.visibility != 'direct'{} {} LIMIT $2 OFFSET $3",
-            self.select(), fed, filter, order
+            self.select("$4"), self.fed_clause("$4"), filter, order
        );
        (count, data)
    }
@@ -249,7 +248,7 @@ impl<'a> FeedSqlBuilder<'a> {
        );
        let data = format!(
            "{} WHERE t.content % $1 AND t.visibility='public'{} {} LIMIT $2 OFFSET $3",
-            self.select(),
+            self.select("$4"),
            filter,
            order
        );
@@ -271,7 +270,7 @@ impl<'a> FeedSqlBuilder<'a> {
             JOIN thought_tags tt ON tt.thought_id = t.id
             JOIN tags tg ON tg.id = tt.tag_id
             WHERE tg.name = $1 AND t.visibility = 'public'{} {} LIMIT $2 OFFSET $3",
-            self.select(),
+            self.select("$4"),
            filter,
            order
        );
@@ -287,7 +286,7 @@ impl<'a> FeedSqlBuilder<'a> {
        );
        let data = format!(
            "{} WHERE t.user_id = $1 AND ($4::uuid = $1 OR (t.visibility != 'direct' AND (t.visibility IN ('public', 'unlisted') OR (t.visibility = 'followers' AND EXISTS(SELECT 1 FROM follows WHERE follower_id = $4 AND following_id = $1 AND state = 'accepted'))))){} {} LIMIT $2 OFFSET $3",
-            self.select(), filter, order
+            self.select("$4"), filter, order
        );
        (count, data)
    }
@@ -300,12 +299,15 @@ impl FeedRepository for PgFeedRepository {
        let page = &req.query.page;
        let builder = FeedSqlBuilder::new(&req.options, &req.query.scope, viewer);

+        let viewer_uuid = viewer.unwrap_or(uuid::Uuid::nil());
+
        match &req.query.scope {
            FeedScope::Home { following_ids } => {
                let ids: Vec<uuid::Uuid> = following_ids.iter().map(|id| id.as_uuid()).collect();
                let (count_sql, data_sql) = builder.home();
                let total: i64 = sqlx::query_scalar(&count_sql)
                    .bind(&ids)
+                    .bind(viewer_uuid)
                    .fetch_one(&self.pool)
                    .await
                    .into_domain()?;
@@ -313,6 +315,7 @@ impl FeedRepository for PgFeedRepository {
                    .bind(&ids)
                    .bind(page.limit())
                    .bind(page.offset())
+                    .bind(viewer_uuid)
                    .fetch_all(&self.pool)
                    .await
                    .into_domain()?;
@@ -336,6 +339,7 @@ impl FeedRepository for PgFeedRepository {
                let rows = sqlx::query_as::<_, FeedRow>(&data_sql)
                    .bind(page.limit())
                    .bind(page.offset())
+                    .bind(viewer_uuid)
                    .fetch_all(&self.pool)
                    .await
                    .into_domain()?;
@@ -361,6 +365,7 @@ impl FeedRepository for PgFeedRepository {
                    .bind(query)
                    .bind(page.limit())
                    .bind(page.offset())
+                    .bind(viewer_uuid)
                    .fetch_all(&self.pool)
                    .await
                    .into_domain()?;
@@ -386,6 +391,7 @@ impl FeedRepository for PgFeedRepository {
                    .bind(tag_name)
                    .bind(page.limit())
                    .bind(page.offset())
+                    .bind(viewer_uuid)
                    .fetch_all(&self.pool)
                    .await
                    .into_domain()?;
@@ -402,7 +408,6 @@ impl FeedRepository for PgFeedRepository {

            FeedScope::User { user_id } => {
                let uid = user_id.as_uuid();
-                let viewer_uuid = viewer.unwrap_or(uuid::Uuid::nil());
                let (count_sql, data_sql) = builder.user();
                let total: i64 = sqlx::query_scalar(&count_sql)
                    .bind(uid)
--- a/crates/adapters/postgres/src/remote_actor.rs
+++ b/crates/adapters/postgres/src/remote_actor.rs
@@ -18,14 +18,44 @@ impl PgRemoteActorRepository {
 #[async_trait]
 impl RemoteActorRepository for PgRemoteActorRepository {
    async fn upsert(&self, a: &RemoteActor) -> Result<(), DomainError> {
+        let also_known_as: Option<Vec<&str>> = if a.also_known_as.is_empty() {
+            None
+        } else {
+            Some(a.also_known_as.iter().map(|s| s.as_str()).collect())
+        };
+        let attachment_json: serde_json::Value = a
+            .attachment
+            .iter()
+            .map(|(n, v)| serde_json::json!({"name": n, "value": v}))
+            .collect();
        sqlx::query(
-            "INSERT INTO remote_actors(url,handle,display_name,avatar_url,last_fetched_at)
-             VALUES($1,$2,$3,$4,$5)
-             ON CONFLICT(url) DO UPDATE SET handle=EXCLUDED.handle,display_name=EXCLUDED.display_name,
-             avatar_url=EXCLUDED.avatar_url,last_fetched_at=EXCLUDED.last_fetched_at"
+            "INSERT INTO remote_actors(url,handle,display_name,avatar_url,last_fetched_at,
+             bio,banner_url,outbox_url,followers_url,following_url,also_known_as,attachment)
+             VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12)
+             ON CONFLICT(url) DO UPDATE SET
+             handle=EXCLUDED.handle,display_name=EXCLUDED.display_name,
+             avatar_url=EXCLUDED.avatar_url,last_fetched_at=EXCLUDED.last_fetched_at,
+             bio=EXCLUDED.bio,banner_url=EXCLUDED.banner_url,
+             outbox_url=EXCLUDED.outbox_url,followers_url=EXCLUDED.followers_url,
+             following_url=EXCLUDED.following_url,also_known_as=EXCLUDED.also_known_as,
+             attachment=EXCLUDED.attachment",
        )
-        .bind(&a.url).bind(&a.handle).bind(&a.display_name).bind(&a.avatar_url).bind(a.last_fetched_at)
-        .execute(&self.pool).await.into_domain().map(|_| ())
+        .bind(&a.url)
+        .bind(&a.handle)
+        .bind(&a.display_name)
+        .bind(&a.avatar_url)
+        .bind(a.last_fetched_at)
+        .bind(&a.bio)
+        .bind(&a.banner_url)
+        .bind(&a.outbox_url)
+        .bind(&a.followers_url)
+        .bind(&a.following_url)
+        .bind(also_known_as.as_deref())
+        .bind(&attachment_json)
+        .execute(&self.pool)
+        .await
+        .into_domain()
+        .map(|_| ())
    }

    async fn find_by_url(&self, url: &str) -> Result<Option<RemoteActor>, DomainError> {
@@ -36,24 +66,55 @@ impl RemoteActorRepository for PgRemoteActorRepository {
            display_name: Option<String>,
            avatar_url: Option<String>,
            last_fetched_at: DateTime<Utc>,
+            bio: Option<String>,
+            banner_url: Option<String>,
+            outbox_url: Option<String>,
+            followers_url: Option<String>,
+            following_url: Option<String>,
+            also_known_as: Option<Vec<String>>,
+            inbox_url: Option<String>,
+            shared_inbox_url: Option<String>,
+            attachment: Option<serde_json::Value>,
        }
        sqlx::query_as::<_, Row>(
-            "SELECT url,handle,display_name,avatar_url,last_fetched_at FROM remote_actors WHERE url=$1"
-        ).bind(url).fetch_optional(&self.pool).await
+            "SELECT url,handle,display_name,avatar_url,last_fetched_at,
+             bio,banner_url,outbox_url,followers_url,following_url,also_known_as,
+             inbox_url,shared_inbox_url,attachment
+             FROM remote_actors WHERE url=$1",
+        )
+        .bind(url)
+        .fetch_optional(&self.pool)
+        .await
        .into_domain()
-        .map(|o| o.map(|r| RemoteActor {
-            url: r.url,
-            handle: r.handle,
-            display_name: r.display_name,
-            avatar_url: r.avatar_url,
-            last_fetched_at: r.last_fetched_at,
-            bio: None,
-            banner_url: None,
-            also_known_as: None,
-            outbox_url: None,
-            followers_url: None,
-            following_url: None,
-            attachment: vec![],
-        }))
+        .map(|o| {
+            o.map(|r| RemoteActor {
+                url: r.url,
+                handle: r.handle,
+                display_name: r.display_name,
+                avatar_url: r.avatar_url,
+                last_fetched_at: r.last_fetched_at,
+                bio: r.bio,
+                banner_url: r.banner_url,
+                also_known_as: r.also_known_as.unwrap_or_default(),
+                outbox_url: r.outbox_url,
+                followers_url: r.followers_url,
+                following_url: r.following_url,
+                inbox_url: r.inbox_url,
+                shared_inbox_url: r.shared_inbox_url,
+                attachment: r
+                    .attachment
+                    .and_then(|v| v.as_array().cloned())
+                    .map(|arr| {
+                        arr.into_iter()
+                            .filter_map(|item| {
+                                let name = item.get("name")?.as_str()?.to_string();
+                                let value = item.get("value")?.as_str()?.to_string();
+                                Some((name, value))
+                            })
+                            .collect()
+                    })
+                    .unwrap_or_default(),
+            })
+        })
    }
 }
--- a/crates/api-types/src/responses.rs
+++ b/crates/api-types/src/responses.rs
@@ -114,7 +114,7 @@ pub struct RemoteActorResponse {
    pub url: String,
    pub bio: Option<String>,
    pub banner_url: Option<String>,
-    pub also_known_as: Option<String>,
+    pub also_known_as: Vec<String>,
    pub outbox_url: Option<String>,
    pub followers_url: Option<String>,
    pub following_url: Option<String>,
--- a/crates/application/src/testing.rs
+++ b/crates/application/src/testing.rs
@@ -136,4 +136,7 @@ impl ActivityPubRepository for TestApRepo {
    ) -> Result<Option<ActorApUrls>, DomainError> {
        Ok(self.actor_ap_urls.lock().unwrap().get(user_id).cloned())
    }
+    async fn sync_remote_actor_to_user(&self, _actor_ap_url: &str) -> Result<(), DomainError> {
+        Ok(())
+    }
 }
--- a/crates/application/src/use_cases/federation_management/mod.rs
+++ b/crates/application/src/use_cases/federation_management/mod.rs
@@ -44,16 +44,14 @@ pub async fn accept_follow_request(
    user_id: &UserId,
    actor_url: &str,
 ) -> Result<(), DomainError> {
-    federation
-        .mark_follower_accepted(user_id, actor_url)
-        .await?;
    events
        .publish(&DomainEvent::RemoteFollowAccepted {
            local_user_id: user_id.clone(),
            remote_actor_url: actor_url.to_string(),
        })
        .await
-        .map_err(|e| DomainError::Internal(e.to_string()))
+        .map_err(|e| DomainError::Internal(e.to_string()))?;
+    federation.mark_follower_accepted(user_id, actor_url).await
 }

 pub async fn reject_follow_request(
@@ -62,16 +60,14 @@ pub async fn reject_follow_request(
    user_id: &UserId,
    actor_url: &str,
 ) -> Result<(), DomainError> {
-    federation
-        .mark_follower_rejected(user_id, actor_url)
-        .await?;
    events
        .publish(&DomainEvent::RemoteFollowRejected {
            local_user_id: user_id.clone(),
            remote_actor_url: actor_url.to_string(),
        })
        .await
-        .map_err(|e| DomainError::Internal(e.to_string()))
+        .map_err(|e| DomainError::Internal(e.to_string()))?;
+    federation.mark_follower_rejected(user_id, actor_url).await
 }

 pub async fn list_remote_followers(
@@ -179,8 +175,9 @@ pub async fn get_actor_connections_page(
        }
    };
    if stale {
+        // Always fetch from page 1 — the full collection is fetched and chunked.
        let _ = scheduler
-            .schedule_connections_fetch(&actor.url, &collection_url, connection_type, page)
+            .schedule_connections_fetch(&actor.url, &collection_url, connection_type, 1)
            .await;
    }
    let has_more = items.len() >= PAGE_SIZE;
--- a/crates/application/src/use_cases/federation_management/tests.rs
+++ b/crates/application/src/use_cases/federation_management/tests.rs
@@ -11,10 +11,12 @@ fn remote_actor(url: &str, handle: &str) -> RemoteActor {
        avatar_url: None,
        bio: None,
        banner_url: None,
-        also_known_as: None,
+        also_known_as: vec![],
        outbox_url: None,
        followers_url: None,
        following_url: None,
+        inbox_url: None,
+        shared_inbox_url: None,
        attachment: vec![],
        last_fetched_at: Utc::now(),
    }
--- a/crates/application/src/use_cases/social/mod.rs
+++ b/crates/application/src/use_cases/social/mod.rs
@@ -8,8 +8,8 @@ use domain::{
        user::User,
    },
    ports::{
-        BlockRepository, BoostRepository, EventPublisher, FederationFollowPort, FollowRepository,
-        LikeRepository, UserReader,
+        BlockRepository, BoostRepository, EventPublisher, FederationBlockPort,
+        FederationFollowPort, FollowRepository, LikeRepository, UserReader,
    },
    value_objects::{BoostId, LikeId, ThoughtId, UserId, Username},
 };
@@ -217,10 +217,14 @@ pub async fn reject_follow(
 pub async fn block_by_username(
    blocks: &dyn BlockRepository,
    users: &dyn UserReader,
+    federation: &dyn FederationBlockPort,
    events: &dyn EventPublisher,
    blocker_id: &UserId,
    username: &str,
 ) -> Result<(), DomainError> {
+    if username.contains('@') {
+        return federation.block_remote(blocker_id, username).await;
+    }
    let uname = Username::new(username).map_err(|_| DomainError::NotFound)?;
    let target = users
        .find_by_username(&uname)
@@ -232,10 +236,14 @@ pub async fn block_by_username(
 pub async fn unblock_by_username(
    blocks: &dyn BlockRepository,
    users: &dyn UserReader,
+    federation: &dyn FederationBlockPort,
    events: &dyn EventPublisher,
    blocker_id: &UserId,
    username: &str,
 ) -> Result<(), DomainError> {
+    if username.contains('@') {
+        return federation.unblock_remote(blocker_id, username).await;
+    }
    let uname = Username::new(username).map_err(|_| DomainError::NotFound)?;
    let target = users
        .find_by_username(&uname)
--- a/crates/bootstrap/src/factory.rs
+++ b/crates/bootstrap/src/factory.rs
@@ -126,11 +126,17 @@ pub async fn build(cfg: &Config) -> Infrastructure {
    // 3. ActivityPub federation
    let connections_repo = Arc::new(PgRemoteActorConnectionRepository::new(pool.clone()));
    let fed_repo = Arc::new(PostgresFederationRepository::new(pool.clone()));
+    let likes: Arc<dyn domain::ports::LikeRepository> =
+        Arc::new(postgres::like::PgLikeRepository::new(pool.clone()));
+    let boosts: Arc<dyn domain::ports::BoostRepository> =
+        Arc::new(postgres::boost::PgBoostRepository::new(pool.clone()));
    let ap_handler = Arc::new(ThoughtsObjectHandler::new(
        Arc::new(PgActivityPubRepository::new(pool.clone())),
        &cfg.base_url,
        Some(event_publisher.clone()),
        Arc::new(postgres::tag::PgTagRepository::new(pool.clone())),
+        likes.clone(),
+        boosts.clone(),
    ));
    let mut ap_builder = ActivityPubService::builder(cfg.base_url.clone())
        .activity_repo(fed_repo.clone())
@@ -181,8 +187,8 @@ pub async fn build(cfg: &Config) -> Infrastructure {
    let state = AppState {
        users: Arc::new(postgres::user::PgUserRepository::new(pool.clone())),
        thoughts: Arc::new(postgres::thought::PgThoughtRepository::new(pool.clone())),
-        likes: Arc::new(postgres::like::PgLikeRepository::new(pool.clone())),
-        boosts: Arc::new(postgres::boost::PgBoostRepository::new(pool.clone())),
+        likes: likes.clone(),
+        boosts: boosts.clone(),
        follows: Arc::new(postgres::follow::PgFollowRepository::new(pool.clone())),
        blocks: Arc::new(postgres::block::PgBlockRepository::new(pool.clone())),
        tags: Arc::new(postgres::tag::PgTagRepository::new(pool.clone())),
--- a/crates/bootstrap/src/main.rs
+++ b/crates/bootstrap/src/main.rs
@@ -35,8 +35,13 @@ async fn main() {
            .allow_headers(tower_http::cors::Any)
    };

+    let ap_router = infra
+        .ap_service
+        .router::<presentation::state::AppState>()
+        .layer(axum::extract::DefaultBodyLimit::max(256 * 1024));
+
    let base = presentation::routes::router()
-        .merge(infra.ap_service.router::<presentation::state::AppState>())
+        .merge(ap_router)
        .with_state(infra.state)
        .layer(cors);

--- a/crates/domain/src/models/remote_actor.rs
+++ b/crates/domain/src/models/remote_actor.rs
@@ -8,10 +8,12 @@ pub struct RemoteActor {
    pub avatar_url: Option<String>,
    pub bio: Option<String>,
    pub banner_url: Option<String>,
-    pub also_known_as: Option<String>,
+    pub also_known_as: Vec<String>,
    pub outbox_url: Option<String>,
    pub followers_url: Option<String>,
    pub following_url: Option<String>,
+    pub inbox_url: Option<String>,
+    pub shared_inbox_url: Option<String>,
    pub attachment: Vec<(String, String)>,
    pub last_fetched_at: DateTime<Utc>,
 }
--- a/crates/domain/src/ports.rs
+++ b/crates/domain/src/ports.rs
@@ -360,15 +360,27 @@ pub trait FederationFetchPort: Send + Sync {
    ) -> Vec<crate::models::actor_connection_summary::ActorConnectionSummary>;
 }

+#[async_trait]
+pub trait FederationBlockPort: Send + Sync {
+    async fn block_remote(&self, local_user_id: &UserId, handle: &str) -> Result<(), DomainError>;
+    async fn unblock_remote(&self, local_user_id: &UserId, handle: &str)
+        -> Result<(), DomainError>;
+}
+
 pub trait FederationActionPort:
-    FederationLookupPort + FederationFollowPort + FederationFollowRequestPort + FederationFetchPort
+    FederationLookupPort
+    + FederationFollowPort
+    + FederationFollowRequestPort
+    + FederationFetchPort
+    + FederationBlockPort
 {
 }
 impl<
        T: FederationLookupPort
            + FederationFollowPort
            + FederationFollowRequestPort
-            + FederationFetchPort,
+            + FederationFetchPort
+            + FederationBlockPort,
    > FederationActionPort for T
 {
 }
--- a/crates/domain/src/testing/mod.rs
+++ b/crates/domain/src/testing/mod.rs
@@ -846,6 +846,24 @@ impl FederationFetchPort for TestStore {
    }
 }

+#[async_trait]
+impl FederationBlockPort for TestStore {
+    async fn block_remote(
+        &self,
+        _local_user_id: &UserId,
+        _handle: &str,
+    ) -> Result<(), DomainError> {
+        Ok(())
+    }
+    async fn unblock_remote(
+        &self,
+        _local_user_id: &UserId,
+        _handle: &str,
+    ) -> Result<(), DomainError> {
+        Ok(())
+    }
+}
+
 #[async_trait]
 impl RemoteActorConnectionRepository for TestStore {
    async fn upsert_connections(
--- a/crates/presentation/src/handlers/mod.rs
+++ b/crates/presentation/src/handlers/mod.rs
@@ -9,3 +9,4 @@ pub mod notifications;
 pub mod social;
 pub mod thoughts;
 pub mod users;
+pub mod well_known;
--- a/crates/presentation/src/handlers/social/mod.rs
+++ b/crates/presentation/src/handlers/social/mod.rs
@@ -119,7 +119,15 @@ pub async fn post_block(
    AuthUser(uid): AuthUser,
    Path(username): Path<String>,
 ) -> Result<StatusCode, ApiError> {
-    block_by_username(&*d.blocks, &*d.users, &*d.events, &uid, &username).await?;
+    block_by_username(
+        &*d.blocks,
+        &*d.users,
+        &*d.federation,
+        &*d.events,
+        &uid,
+        &username,
+    )
+    .await?;
    Ok(StatusCode::NO_CONTENT)
 }
 #[utoipa::path(delete, path = "/users/{username}/block", params(("username" = String, Path, description = "Username")), responses((status = 204, description = "Unblocked")), security(("bearer_auth" = [])))]
@@ -128,7 +136,15 @@ pub async fn delete_block(
    AuthUser(uid): AuthUser,
    Path(username): Path<String>,
 ) -> Result<StatusCode, ApiError> {
-    unblock_by_username(&*d.blocks, &*d.users, &*d.events, &uid, &username).await?;
+    unblock_by_username(
+        &*d.blocks,
+        &*d.users,
+        &*d.federation,
+        &*d.events,
+        &uid,
+        &username,
+    )
+    .await?;
    Ok(StatusCode::NO_CONTENT)
 }
 #[utoipa::path(put, path = "/users/me/top-friends", request_body = SetTopFriendsRequest, responses((status = 204, description = "Top friends updated")), security(("bearer_auth" = [])))]
--- a/crates/presentation/src/handlers/well_known.rs
+++ b/crates/presentation/src/handlers/well_known.rs
@@ -0,0 +1,20 @@
+use axum::{extract::State, http::header, response::IntoResponse};
+
+use crate::state::AppState;
+
+pub async fn host_meta(State(state): State<AppState>) -> impl IntoResponse {
+    let domain = url::Url::parse(&state.base_url)
+        .ok()
+        .and_then(|u| u.host_str().map(|s| s.to_string()))
+        .unwrap_or_default();
+    let body = format!(
+        r#"<?xml version="1.0" encoding="UTF-8"?>
+<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
+  <Link rel="lrdd" template="https://{domain}/.well-known/webfinger?resource={{uri}}"/>
+</XRD>"#
+    );
+    (
+        [(header::CONTENT_TYPE, "application/xrd+xml; charset=utf-8")],
+        body,
+    )
+}
--- a/crates/presentation/src/routes.rs
+++ b/crates/presentation/src/routes.rs
@@ -135,5 +135,7 @@ pub fn router() -> Router<AppState> {
        )
        .route("/api-keys/{id}", delete(api_keys::delete_api_key_handler));

-    openapi::serve(api_routes).route("/media/{*path}", get(media::get_media))
+    openapi::serve(api_routes)
+        .route("/media/{*path}", get(media::get_media))
+        .route("/.well-known/host-meta", get(well_known::host_meta))
 }
--- a/crates/presentation/src/testing.rs
+++ b/crates/presentation/src/testing.rs
@@ -97,6 +97,9 @@ impl ActivityPubRepository for NoOpApRepo {
    ) -> Result<Option<ActorApUrls>, DomainError> {
        Ok(None)
    }
+    async fn sync_remote_actor_to_user(&self, _actor_ap_url: &str) -> Result<(), DomainError> {
+        Ok(())
+    }
 }

 pub struct NoOpMediaStore;
--- a/crates/worker/src/factory.rs
+++ b/crates/worker/src/factory.rs
@@ -50,6 +50,8 @@ pub async fn build(database_url: &str, base_url: &str, nats_url: &str) -> Worker
        base_url,
        None,
        Arc::new(postgres::tag::PgTagRepository::new(pool.clone())),
+        Arc::new(postgres::like::PgLikeRepository::new(pool.clone())),
+        Arc::new(postgres::boost::PgBoostRepository::new(pool.clone())),
    ));
    let raw_ap_service = Arc::new(
        ActivityPubService::builder(base_url.to_string())
--- a/crates/worker/src/main.rs
+++ b/crates/worker/src/main.rs
@@ -1,6 +1,7 @@
 mod dlq;
 mod factory;
 mod handlers;
+mod outbox_cleanup;
 mod outbox_relay;

 use domain::{errors::DomainError, events::DomainEvent};
@@ -39,6 +40,15 @@ async fn main() {
        .run(),
    );

+    tokio::spawn(
+        outbox_cleanup::OutboxCleanup {
+            pool: infra.pool.clone(),
+            retention_days: 7,
+            interval: std::time::Duration::from_secs(3600),
+        }
+        .run(),
+    );
+
    tracing::info!("Worker started, consuming events...");
    let mut stream = infra.message_source.messages();
    while let Some(result) = stream.next().await {
--- a/crates/worker/src/outbox_cleanup.rs
+++ b/crates/worker/src/outbox_cleanup.rs
@@ -0,0 +1,31 @@
+use sqlx::PgPool;
+use std::time::Duration;
+
+pub struct OutboxCleanup {
+    pub pool: PgPool,
+    pub retention_days: i64,
+    pub interval: Duration,
+}
+
+impl OutboxCleanup {
+    pub async fn run(self) {
+        loop {
+            tokio::time::sleep(self.interval).await;
+            match self.cleanup().await {
+                Ok(n) if n > 0 => tracing::info!(deleted = n, "outbox cleanup: removed old events"),
+                Err(e) => tracing::warn!(error = %e, "outbox cleanup failed"),
+                _ => {}
+            }
+        }
+    }
+
+    async fn cleanup(&self) -> Result<u64, sqlx::Error> {
+        let result = sqlx::query(
+            "DELETE FROM outbox_events WHERE delivered = true AND delivered_at < NOW() - make_interval(days => $1)",
+        )
+        .bind(self.retention_days as i32)
+        .execute(&self.pool)
+        .await?;
+        Ok(result.rows_affected())
+    }
+}
--- a/thoughts-frontend/components/remote-user-profile/profile-card.tsx
+++ b/thoughts-frontend/components/remote-user-profile/profile-card.tsx
@@ -58,17 +58,22 @@ export function ProfileCard({ actor, action }: ProfileCardProps) {
        </Link>
      </Button>

-      {actor.alsoKnownAs && (
+      {actor.alsoKnownAs.length > 0 && (
        <p className="mt-2 text-xs text-muted-foreground">
          Also known as:{" "}
-          <Link
-            href={actor.alsoKnownAs}
-            target="_blank"
-            rel="noopener noreferrer"
-            className="underline"
-          >
-            {actor.alsoKnownAs}
-          </Link>
+          {actor.alsoKnownAs.map((aka, i) => (
+            <span key={aka}>
+              {i > 0 && ", "}
+              <Link
+                href={aka}
+                target="_blank"
+                rel="noopener noreferrer"
+                className="underline"
+              >
+                {aka}
+              </Link>
+            </span>
+          ))}
        </p>
      )}

--- a/thoughts-frontend/lib/api.ts
+++ b/thoughts-frontend/lib/api.ts
@@ -29,7 +29,7 @@ export const RemoteActorSchema = z.object({
  url: z.string(),
  bio: z.string().nullable(),
  bannerUrl: z.string().nullable(),
-  alsoKnownAs: z.string().nullable(),
+  alsoKnownAs: z.array(z.string()),
  outboxUrl: z.string().nullable(),
  followersUrl: z.string().nullable(),
  followingUrl: z.string().nullable(),
				`@@ -0,0 +1 @@`
				`ALTER TABLE users ALTER COLUMN username TYPE VARCHAR(255);`
				`@@ -0,0 +1 @@`
				`ALTER TABLE remote_actors ADD COLUMN IF NOT EXISTS attachment JSONB DEFAULT '[]'::jsonb;`