refactor: move AppContext to presentation crate, structurally enforce boundary

crates/application/src/goals/create.rs

@@ -17,9 +17,7 @@ pub async fn execute(
 ) -> Result<GoalWithProgress, DomainError> {
     let user_id = UserId::from_uuid(cmd.user_id);
 
-    let existing = goal
-        .find_by_user_and_year(&user_id, cmd.year)
-        .await?;
+    let existing = goal.find_by_user_and_year(&user_id, cmd.year).await?;
     if existing.is_some() {
         return Err(DomainError::ValidationError(
             "Goal already exists for this year".into(),
@@ -34,9 +32,7 @@ pub async fn execute(
     )?;
     goal.save(&g).await?;
 
-    let current_count = goal
-        .count_reviews_in_year(&user_id, cmd.year)
-        .await?;
+    let current_count = goal.count_reviews_in_year(&user_id, cmd.year).await?;
 
     event_publisher
         .publish(&DomainEvent::GoalCreated {

crates/application/src/goals/get.rs

@@ -1,6 +1,8 @@
 use std::sync::Arc;
 
-use domain::{errors::DomainError, models::GoalWithProgress, ports::GoalRepository, value_objects::UserId};
+use domain::{
+    errors::DomainError, models::GoalWithProgress, ports::GoalRepository, value_objects::UserId,
+};
 
 use super::queries::GetGoalQuery;
 
@@ -10,15 +12,11 @@ pub async fn execute(
 ) -> Result<Option<GoalWithProgress>, DomainError> {
     let user_id = UserId::from_uuid(query.user_id);
 
-    let found = goal
-        .find_by_user_and_year(&user_id, query.year)
-        .await?;
+    let found = goal.find_by_user_and_year(&user_id, query.year).await?;
 
     let Some(g) = found else { return Ok(None) };
 
-    let current_count = goal
-        .count_reviews_in_year(&user_id, query.year)
-        .await?;
+    let current_count = goal.count_reviews_in_year(&user_id, query.year).await?;
 
     Ok(Some(GoalWithProgress {
         goal: g,

crates/application/src/goals/list.rs

@@ -1,6 +1,8 @@
 use std::sync::Arc;
 
-use domain::{errors::DomainError, models::GoalWithProgress, ports::GoalRepository, value_objects::UserId};
+use domain::{
+    errors::DomainError, models::GoalWithProgress, ports::GoalRepository, value_objects::UserId,
+};
 
 use super::queries::ListGoalsQuery;
 
@@ -13,9 +15,7 @@ pub async fn execute(
 
     let mut result = Vec::with_capacity(goals.len());
     for g in goals {
-        let current_count = goal
-            .count_reviews_in_year(&user_id, g.year())
-            .await?;
+        let current_count = goal.count_reviews_in_year(&user_id, g.year()).await?;
         result.push(GoalWithProgress {
             goal: g,
             current_count,

crates/application/src/goals/update.rs

@@ -25,9 +25,7 @@ pub async fn execute(
     g.update_target(cmd.target_count)?;
     goal.update(&g).await?;
 
-    let current_count = goal
-        .count_reviews_in_year(&user_id, cmd.year)
-        .await?;
+    let current_count = goal.count_reviews_in_year(&user_id, cmd.year).await?;
 
     event_publisher
         .publish(&DomainEvent::GoalUpdated {