feat: goals — "watch N movies in YEAR" with progress bar

Domain: Goal entity, UserSettings (federation toggle), RemoteGoalEntry.
Ports: GoalRepository, UserSettingsRepository, RemoteGoalRepository.
Adapters: sqlite + postgres repos, migrations, AP content query extensions.
Application: CRUD use cases (create/update/delete/get/list), settings use cases.
API: 7 endpoints (/goals CRUD, /users/{id}/goals, /settings) with utoipa docs.
Federation: GoalObject (Note + goal discriminator), outbound broadcast with
per-user toggle, inbound GoalObjectHandler in CompositeObjectHandler.
SPA: API client + hooks, GoalCard (shadcn Card+Progress+DropdownMenu),
GoalSheet (Drawer), profile integration (editable own, read-only others),
federation toggle in settings (Switch).
Classic HTML: glassmorphic goal card on profile, Frutiger Aero styling.
Progress computed from existing reviews — backwards compatible.

crates/application/src/goals/get.rs

@@ -0,0 +1,30 @@
+use domain::{errors::DomainError, models::GoalWithProgress, value_objects::UserId};
+
+use super::queries::GetGoalQuery;
+use crate::context::AppContext;
+
+pub async fn execute(
+    ctx: &AppContext,
+    query: GetGoalQuery,
+) -> Result<Option<GoalWithProgress>, DomainError> {
+    let user_id = UserId::from_uuid(query.user_id);
+
+    let goal = ctx
+        .repos
+        .goal
+        .find_by_user_and_year(&user_id, query.year)
+        .await?;
+
+    let Some(goal) = goal else { return Ok(None) };
+
+    let current_count = ctx
+        .repos
+        .goal
+        .count_reviews_in_year(&user_id, query.year)
+        .await?;
+
+    Ok(Some(GoalWithProgress {
+        goal,
+        current_count,
+    }))
+}