refactor (v2): better arch

Co-authored-by: Copilot <copilot@github.com>

crates/application/src/notes/get_note.rs

@@ -0,0 +1,28 @@
+use domain::{
+    errors::{DomainError, DomainResult},
+    note::entity::Note,
+    user::entity::UserId,
+};
+
+use super::queries::GetNoteQuery;
+use crate::context::AppContext;
+
+pub async fn execute(ctx: &AppContext, q: GetNoteQuery) -> DomainResult<Note> {
+    let note_id = domain::note::entity::NoteId::from_uuid(q.note_id);
+    let user_id = UserId::from_uuid(q.user_id);
+
+    let note = ctx
+        .repos
+        .note
+        .find_by_id(&note_id)
+        .await?
+        .ok_or_else(|| DomainError::NotFound(format!("note {}", q.note_id)))?;
+
+    if note.user_id != user_id {
+        return Err(DomainError::Forbidden(
+            "note belongs to another user".into(),
+        ));
+    }
+
+    Ok(note)
+}