feat: edit body for commit messages

tests/cli.rs

@@ -1,6 +1,6 @@
 use assert_fs::TempDir;
 #[cfg(feature = "test-utils")]
-use jj_cz::{BreakingChange, CommitType, Description, MockPrompts, Scope};
+use jj_cz::{Body, BreakingChange, CommitType, Description, MockPrompts, Scope};
 use jj_cz::{CommitWorkflow, Error, JjLib};
 #[cfg(feature = "test-utils")]
 use jj_lib::{config::StackedConfig, settings::UserSettings, workspace::Workspace};
@@ -28,6 +28,7 @@ async fn test_happy_path_integration() {
         .with_scope(Scope::empty())
         .with_description(Description::parse("add new feature").unwrap())
         .with_breaking_change(BreakingChange::No)
+        .with_body(Body::default())
         .with_confirm(true);
 
     // Create a mock executor that tracks calls
@@ -87,6 +88,7 @@ async fn test_cancellation() {
         .with_scope(Scope::empty())
         .with_description(Description::parse("test").unwrap())
         .with_breaking_change(BreakingChange::No)
+        .with_body(Body::default())
         .with_confirm(true);
     let workflow = CommitWorkflow::with_prompts(executor, mock_prompts);