feat: complete tree shell cutover and regression coverage

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

@@ -78,7 +78,11 @@ pub fn build_tree_target(
     }
 }
 
-pub fn ensure_non_empty(value: &str, field: &'static str, context: &RequestContext) -> Result<String, WebError> {
+pub fn ensure_non_empty(
+    value: &str,
+    field: &'static str,
+    context: &RequestContext,
+) -> Result<String, WebError> {
     let trimmed = value.trim();
     if trimmed.is_empty() {
         return Err(WebError::bad_request_code(
@@ -99,12 +103,11 @@ pub fn read_optional_non_empty(value: Option<String>) -> Option<String> {
 
 pub fn ensure_sort_order(sort_order: i64, context: &RequestContext) -> Result<i64, WebError> {
     if sort_order < 0 {
-        return Err(WebError::bad_request_code(
-            "tree_command_validation",
-            "sortOrder 不能小于 0",
-        )
-        .with_context(context)
-        .with_header("x-error-phase", "tree_command_validate"));
+        return Err(
+            WebError::bad_request_code("tree_command_validation", "sortOrder 不能小于 0")
+                .with_context(context)
+                .with_header("x-error-phase", "tree_command_validate"),
+        );
     }
     Ok(sort_order)
 }