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+# Remote Actor Profile Design
+
+Display full profiles for remote ActivityPub actors: metadata (avatar, bio, banner, profile fields) plus their public posts, fetched in the background via the NATS worker.
+
+## Data Flow
+
+1. User navigates to `/users/@gabrielkaszewski@mastodon.social`
+2. Frontend detects `@user@domain` format, calls in parallel:
+   - `GET /users/lookup?handle=@user@instance` → enriched profile metadata
+   - `GET /federation/actors/{handle}/posts?page=1` → cached posts (empty on first visit)
+3. Posts endpoint: looks up interned local `UserId`, queries `feed.user_feed`, **then** publishes `DomainEvent::FetchRemoteActorPosts { actor_ap_url, outbox_url }` fire-and-forget
+4. Worker receives event → fetches remote outbox page via HTTP → stores public notes via `ap_repo.accept_note`
+5. On next visit/refresh posts are populated
+
+## Domain Changes
+
+### Extend `domain/src/models/remote_actor.rs`
+
+Add fields:
+```rust
+pub struct RemoteActor {
+    pub url: String,
+    pub handle: String,
+    pub display_name: Option<String>,
+    pub inbox_url: String,
+    pub shared_inbox_url: Option<String>,
+    pub public_key: String,
+    pub avatar_url: Option<String>,
+    pub last_fetched_at: DateTime<Utc>,
+    // new:
+    pub bio: Option<String>,
+    pub banner_url: Option<String>,
+    pub also_known_as: Option<String>,
+    pub outbox_url: Option<String>,
+    pub attachment: Vec<(String, String)>,  // (name, value)
+}
+```
+
+### New `domain/src/models/remote_note.rs`
+
+```rust
+pub struct RemoteNote {
+    pub ap_id: String,
+    pub content: String,
+    pub published: chrono::DateTime<chrono::Utc>,
+    pub sensitive: bool,
+    pub content_warning: Option<String>,
+}
+```
+
+### New `DomainEvent` variant (`domain/src/events.rs`)
+
+```rust
+FetchRemoteActorPosts {
+    actor_ap_url: String,
+    outbox_url: String,
+}
+```
+
+### New `FederationActionPort` method (`domain/src/ports.rs`)
+
+```rust
+async fn fetch_outbox_page(
+    &self,
+    outbox_url: &str,
+    page: u32,
+) -> Result<Vec<RemoteNote>, DomainError>;
+```
+
+`TestStore` stub returns `Ok(vec![])`.
+
+## activitypub-base Implementation
+
+### `lookup_actor` — populate new `RemoteActor` fields
+
+Map from `DbActor`:
+```rust
+bio: actor.bio.clone(),
+banner_url: actor.banner_url.as_ref().map(|u| u.to_string()),
+also_known_as: actor.also_known_as.clone(),
+outbox_url: Some(actor.outbox_url.to_string()),
+attachment: actor.attachment.iter().map(|f| (f.name.clone(), f.value.clone())).collect(),
+```
+
+### `fetch_outbox_page` impl on `ActivityPubService`
+
+```rust
+async fn fetch_outbox_page(&self, outbox_url: &str, page: u32) -> Result<Vec<RemoteNote>, DomainError> {
+    let url = format!("{}?page={}", outbox_url, page);
+    let resp: serde_json::Value = reqwest::Client::new()
+        .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 items = resp["orderedItems"].as_array().cloned().unwrap_or_default();
+    Ok(items.iter().filter_map(|item| {
+        // Items are Create activities or Notes directly
+        let note = if item["type"].as_str() == Some("Create") {
+            &item["object"]
+        } else if item["type"].as_str() == Some("Note") {
+            item
+        } else {
+            return None;
+        };
+        // Only public notes
+        let to = note["to"].as_array()?;
+        let is_public = to.iter().any(|t| {
+            t.as_str() == Some("https://www.w3.org/ns/activitystreams#Public")
+        });
+        if !is_public { return None; }
+        Some(RemoteNote {
+            ap_id: note["id"].as_str()?.to_string(),
+            content: note["content"].as_str().unwrap_or("").to_string(),
+            published: chrono::DateTime::parse_from_rfc3339(
+                note["published"].as_str()?
+            ).ok()?.with_timezone(&chrono::Utc),
+            sensitive: note["sensitive"].as_bool().unwrap_or(false),
+            content_warning: note["summary"].as_str().map(|s| s.to_string()),
+        })
+    }).collect())
+}
+```
+
+## AppState + Bootstrap
+
+Add `ap_repo: Arc<dyn ActivityPubRepository>` to `presentation/src/state.rs`.
+
+Wire in `bootstrap/src/factory.rs`:
+```rust
+ap_repo: Arc::new(PgActivityPubRepository::new(pool.clone())),
+```
+
+## event-payload
+
+Add to `EventPayload` enum:
+```rust
+FetchRemoteActorPosts {
+    actor_ap_url: String,
+    outbox_url: String,
+}
+```
+
+Add subject (`"fetch_remote_actor_posts"`), mapping from/to `DomainEvent`, and a sample in the uniqueness test.
+
+## REST Endpoint
+
+**`GET /federation/actors/{handle}/posts?page=1`** (new handler in `presentation/src/handlers/federation_actors.rs`):
+
+```rust
+pub async fn remote_actor_posts_handler(
+    State(s): State<AppState>,
+    Path(handle): Path<String>,
+    Query(q): Query<PaginationQuery>,
+    OptionalAuthUser(viewer): OptionalAuthUser,
+) -> Result<Json<serde_json::Value>, ApiError> {
+    let actor = s.federation.lookup_actor(&handle).await?;
+    let ap_url = url::Url::parse(&actor.url)
+        .map_err(|e| ApiError::BadRequest(e.to_string()))?;
+
+    // Get or create interned local UserId for this remote actor
+    let author_id = match s.ap_repo.find_remote_actor_id(&ap_url).await? {
+        Some(id) => id,
+        None => s.ap_repo.intern_remote_actor(&ap_url).await?,
+    };
+
+    // Return cached posts
+    let page = PageParams { page: q.page(), per_page: q.per_page() };
+    let result = s.feed.user_feed(&author_id, &page, viewer.as_ref()).await?;
+
+    // Trigger background fetch (fire and forget)
+    if let Some(outbox_url) = &actor.outbox_url {
+        let _ = s.events.publish(&DomainEvent::FetchRemoteActorPosts {
+            actor_ap_url: actor.url.clone(),
+            outbox_url: outbox_url.clone(),
+        }).await;
+    }
+
+    Ok(Json(serde_json::json!({
+        "total": result.total,
+        "page": result.page,
+        "per_page": result.per_page,
+        "items": result.items.iter().map(to_thought_response).collect::<Vec<_>>(),
+    })))
+}
+```
+
+Mount at `GET /federation/actors/{handle}/posts` in `routes.rs`.
+
+Add `pub mod federation_actors;` to `handlers/mod.rs`.
+
+Make `to_thought_response` in `feed.rs` `pub` so `federation_actors.rs` can import it.
+
+## api-types
+
+Extend `RemoteActorResponse`:
+```rust
+pub struct RemoteActorResponse {
+    pub handle: String,
+    pub display_name: Option<String>,
+    pub avatar_url: Option<String>,
+    pub url: String,
+    // new:
+    pub bio: Option<String>,
+    pub banner_url: Option<String>,
+    pub also_known_as: Option<String>,
+    pub outbox_url: Option<String>,
+    pub attachment: Vec<ProfileField>,
+}
+
+pub struct ProfileField {
+    pub name: String,
+    pub value: String,
+}
+```
+
+Update `lookup_handler` in `users.rs` to populate all new fields.
+
+## Worker
+
+### `FederationEventService` new deps
+
+Add `federation: Arc<dyn FederationActionPort>` and `ap_repo: Arc<dyn ActivityPubRepository>` to `FederationEventService`. Handle the new event:
+
+```rust
+DomainEvent::FetchRemoteActorPosts { actor_ap_url, outbox_url } => {
+    let notes = match self.federation.fetch_outbox_page(outbox_url, 1).await {
+        Ok(n) => n,
+        Err(e) => { tracing::warn!("failed to fetch outbox: {e}"); return Ok(()); }
+    };
+    let actor_url = url::Url::parse(actor_ap_url)
+        .map_err(|e| DomainError::ExternalService(e.to_string()))?;
+    let author_id = self.ap_repo.intern_remote_actor(&actor_url).await?;
+    for note in notes {
+        let ap_id = match url::Url::parse(&note.ap_id) {
+            Ok(u) => u,
+            Err(_) => continue,
+        };
+        // accept_note is idempotent — ignore duplicate errors
+        let _ = self.ap_repo.accept_note(
+            &ap_id, &author_id, &note.content, note.published,
+            note.sensitive, note.content_warning, "public",
+        ).await;
+    }
+    Ok(())
+}
+```
+
+Wire new deps in `worker/src/factory.rs`.
+
+## Frontend
+
+### `lib/api.ts`
+
+```typescript
+// Enriched RemoteActorSchema (same endpoint, more fields)
+export const ProfileFieldSchema = z.object({
+  name: z.string(),
+  value: z.string(),
+});
+
+export const RemoteActorSchema = z.object({
+  handle: z.string(),
+  displayName: z.string().nullable(),
+  avatarUrl: z.string().nullable(),
+  url: z.string(),
+  bio: z.string().nullable(),
+  bannerUrl: z.string().nullable(),
+  alsoKnownAs: z.string().nullable(),
+  outboxUrl: z.string().nullable(),
+  attachment: z.array(ProfileFieldSchema),
+});
+
+export const getRemoteActorPosts = (handle: string, page: number, token: string | null) =>
+  apiFetch(
+    `/federation/actors/${encodeURIComponent(handle)}/posts?page=${page}&per_page=20`,
+    {},
+    z.object({ total: z.number(), page: z.number(), per_page: z.number(), items: z.array(ThoughtSchema) }),
+    token
+  );
+```
+
+### `app/users/[username]/page.tsx`
+
+Detect `@user@domain` regex. If handle: call `lookupRemoteActor` + `getRemoteActorPosts` in parallel; render `<RemoteUserProfile>`. Otherwise: existing local profile.
+
+### New `components/remote-user-profile.tsx`
+
+Client component showing:
+- Banner (`bannerUrl`) — full-width image or placeholder
+- Avatar + display name + handle (`@user@instance`)
+- Bio (rendered as text)
+- Profile fields (`attachment`) — key-value table
+- "Also known as" link (if present)
+- External profile link button → `url` in new tab
+- Follow button (reuse `followUser(handle, token)`)
+- Posts list using `ThoughtList` or similar, with empty state "Posts are loading, check back soon"
+- Pagination controls