test: move application tests to tests/

test_support/test_helpers -> tests/support; watched_at unified w/ domain test_watched_at (2024-03-15).
Kept inline: users::diary_filter tests (feed_sort_to_direction_all_variants, paged_user_filter_builds_correctly) - pub(super) helpers in private module.
Dropped stale never-compiled users/tests/get_users.rs (old execute signature).

crates/application/tests/goals/create_test.rs

@@ -0,0 +1,122 @@
+use crate::support::create_goal_command;
+use std::sync::Arc;
+
+use domain::events::DomainEvent;
+use domain::testing::{FakeStatsRepository, InMemoryStore, NoopEventPublisher};
+use uuid::Uuid;
+
+use crate::support::TestContextBuilder;
+use application::goals::create;
+use application::goals::deps::GoalCommandDeps;
+
+#[tokio::test]
+async fn creates_goal_and_returns_progress() {
+    let goals = InMemoryStore::new();
+    let stats = FakeStatsRepository::new();
+    let events = NoopEventPublisher::new();
+    let deps = GoalCommandDeps {
+        goal_command: Arc::clone(&goals) as _,
+        goal_query: Arc::clone(&goals) as _,
+        stats: Arc::clone(&stats) as _,
+        event_publisher: Arc::clone(&events) as _,
+    };
+
+    let result = create::execute(&deps, create_goal_command(2025, 50))
+        .await
+        .unwrap();
+
+    assert_eq!(result.goal.year(), 2025);
+    assert_eq!(result.goal.target_count(), 50);
+    assert_eq!(result.current_count, 0);
+    assert_eq!(goals.goal_count(), 1);
+}
+
+#[tokio::test]
+async fn creates_goal_with_review_count() {
+    let goals = InMemoryStore::new();
+    let stats = FakeStatsRepository::new();
+    stats.set_review_count(Uuid::nil(), 2025, 5);
+    let events = NoopEventPublisher::new();
+    let deps = GoalCommandDeps {
+        goal_command: Arc::clone(&goals) as _,
+        goal_query: Arc::clone(&goals) as _,
+        stats: Arc::clone(&stats) as _,
+        event_publisher: Arc::clone(&events) as _,
+    };
+
+    let result = create::execute(&deps, create_goal_command(2025, 50))
+        .await
+        .unwrap();
+
+    assert_eq!(result.current_count, 5);
+    assert_eq!(goals.goal_count(), 1);
+}
+
+#[tokio::test]
+async fn emits_goal_created_event() {
+    let b = TestContextBuilder::new();
+    let events = NoopEventPublisher::new();
+    let deps = GoalCommandDeps {
+        goal_command: b.goal_command.clone(),
+        goal_query: b.goal_query.clone(),
+        stats: b.stats_repo.clone(),
+        event_publisher: Arc::clone(&events) as _,
+    };
+
+    create::execute(&deps, create_goal_command(2025, 10))
+        .await
+        .unwrap();
+
+    let published = events.published();
+    assert!(
+        published
+            .iter()
+            .any(|e| matches!(e, DomainEvent::GoalCreated { year: 2025, .. }))
+    );
+}
+
+#[tokio::test]
+async fn rejects_duplicate_year() {
+    let b = TestContextBuilder::new();
+    let deps = GoalCommandDeps {
+        goal_command: b.goal_command.clone(),
+        goal_query: b.goal_query.clone(),
+        stats: b.stats_repo.clone(),
+        event_publisher: b.event_publisher.clone(),
+    };
+    let cmd = create_goal_command(2025, 10);
+
+    create::execute(&deps, cmd).await.unwrap();
+
+    let result = create::execute(&deps, create_goal_command(2025, 20)).await;
+
+    assert!(result.is_err());
+}
+
+#[tokio::test]
+async fn rejects_year_before_2020() {
+    let b = TestContextBuilder::new();
+    let deps = GoalCommandDeps {
+        goal_command: b.goal_command.clone(),
+        goal_query: b.goal_query.clone(),
+        stats: b.stats_repo.clone(),
+        event_publisher: b.event_publisher.clone(),
+    };
+    let result = create::execute(&deps, create_goal_command(2019, 10)).await;
+
+    assert!(result.is_err());
+}
+
+#[tokio::test]
+async fn rejects_zero_target() {
+    let b = TestContextBuilder::new();
+    let deps = GoalCommandDeps {
+        goal_command: b.goal_command.clone(),
+        goal_query: b.goal_query.clone(),
+        stats: b.stats_repo.clone(),
+        event_publisher: b.event_publisher.clone(),
+    };
+    let result = create::execute(&deps, create_goal_command(2025, 0)).await;
+
+    assert!(result.is_err());
+}