refactor (v2): better arch

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

crates/application/src/notes/create_note.rs

@@ -0,0 +1,46 @@
+use domain::{
+    errors::DomainResult,
+    events::DomainEvent,
+    note::{
+        entity::Note,
+        value_objects::{NoteColor, NoteTitle},
+    },
+    user::entity::UserId,
+};
+
+use super::commands::CreateNoteCommand;
+use crate::context::AppContext;
+
+pub async fn execute(ctx: &AppContext, cmd: CreateNoteCommand) -> DomainResult<Note> {
+    let user_id = UserId::from_uuid(cmd.user_id);
+    let title = NoteTitle::from_optional(cmd.title)?;
+
+    let mut note = Note::new(user_id, title, cmd.content);
+
+    if let Some(color) = cmd.color {
+        note.set_color(NoteColor::new(color));
+    }
+    if cmd.is_pinned {
+        note.set_pinned(true);
+    }
+
+    ctx.repos.note.save(&note).await?;
+
+    if let Err(e) = ctx
+        .services
+        .event_publisher
+        .publish(&DomainEvent::NoteCreated {
+            note_id: note.id,
+            user_id,
+        })
+        .await
+    {
+        tracing::warn!("failed to publish NoteCreated: {e}");
+    }
+
+    Ok(note)
+}
+
+#[cfg(test)]
+#[path = "tests/create_note.rs"]
+mod tests;