feat: complete tree shell cutover and regression coverage

rust/crates/mnote-web/src/routes/compat.rs

@@ -2,9 +2,7 @@ use crate::app::AppState;
 use crate::context::RequestContext;
 use crate::error::WebError;
 use crate::routes::query_support::resolve_effective_workspace_id;
-use crate::routes::snapshot_support::{
-    load_projection_snapshot, ProjectionSnapshotSpec,
-};
+use crate::routes::snapshot_support::{load_projection_snapshot, ProjectionSnapshotSpec};
 use axum::extract::Query;
 use axum::extract::{Extension, State};
 use axum::http::StatusCode;
@@ -77,10 +75,7 @@ pub async fn next_sidebar(
             .with_header("x-error-phase", "compat_sidebar_shape")
             .with_header("x-upstream-service", "convex")
     })?;
-    dataset_object.insert(
-        "kernel_sidebar_projection".into(),
-        snapshot.projection,
-    );
+    dataset_object.insert("kernel_sidebar_projection".into(), snapshot.projection);
 
     Ok((
         StatusCode::OK,