Do not show prompt on no diff apply

src/commands/apply.rs

@@ -21,6 +21,10 @@ impl ApplyCommand {
 
         let diff_result = diff(context, config).await?;
 
+        if diff_result.no_change {
+            return Ok(());
+        }
+
         if !auto_approve {
             print!(
                 r#"

src/differ.rs

@@ -302,9 +302,13 @@ pub async fn diff(context: &FuburaContext, config: &Config) -> Result<DiffResult
         diff_result.append_text_diff(text_diff);
     }
 
-    println!("\nFubura will:");
-    for (op, count) in diff_result.summary.iter() {
-        println!("    {}: {}", op, count);
+    if diff_result.no_change {
+        println!("\nNo diff found. Fubura will do nothing.");
+    } else {
+        println!("\nFubura will:");
+        for (op, count) in diff_result.summary.iter() {
+            println!("    {}: {}", op, count);
+        }
     }
 
     Ok(diff_result)

src/types/diff_result.rs

@@ -134,4 +134,14 @@ mod test {
 
         similar_asserts::assert_eq!(expected, actual.summary);
     }
+
+    #[tokio::test]
+    async fn test_no_change_flag() {
+        let mut actual = DiffResult::default();
+
+        similar_asserts::assert_eq!(true, actual.no_change);
+
+        actual.append_diff_op("NewBatch", &DiffOp::CreateState);
+        similar_asserts::assert_eq!(false, actual.no_change);
+    }
 }