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/get_test.rs

@@ -0,0 +1,58 @@
+use crate::support::create_goal_command;
+use uuid::Uuid;
+
+use crate::support::TestContextBuilder;
+use application::goals::deps::{GoalCommandDeps, GoalQueryDeps};
+use application::goals::{create, get, queries::GetGoalQuery};
+
+#[tokio::test]
+async fn returns_goal_when_exists() {
+    let b = TestContextBuilder::new();
+    let cmd_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 query_deps = GoalQueryDeps {
+        goal_query: b.goal_query.clone(),
+        stats: b.stats_repo.clone(),
+    };
+
+    create::execute(&cmd_deps, create_goal_command(2025, 50))
+        .await
+        .unwrap();
+
+    let result = get::execute(
+        &query_deps,
+        GetGoalQuery {
+            user_id: Uuid::nil(),
+            year: 2025,
+        },
+    )
+    .await
+    .unwrap();
+
+    assert!(result.is_some());
+    assert_eq!(result.unwrap().goal.target_count(), 50);
+}
+
+#[tokio::test]
+async fn returns_none_when_missing() {
+    let b = TestContextBuilder::new();
+    let query_deps = GoalQueryDeps {
+        goal_query: b.goal_query.clone(),
+        stats: b.stats_repo.clone(),
+    };
+    let result = get::execute(
+        &query_deps,
+        GetGoalQuery {
+            user_id: Uuid::nil(),
+            year: 2025,
+        },
+    )
+    .await
+    .unwrap();
+
+    assert!(result.is_none());
+}