Max Turnの実装

crates/protocol/src/lib.rs

@@ -60,6 +60,9 @@ pub enum Event {
         input_tokens: Option<u64>,
         output_tokens: Option<u64>,
     },
+    RunEnd {
+        result: RunResult,
+    },
     Error {
         code: ErrorCode,
         message: String,
@@ -83,6 +86,14 @@ pub enum TurnResult {
     Paused,
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum RunResult {
+    Finished,
+    Paused,
+    LimitReached,
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum ErrorCode {
@@ -126,6 +137,17 @@ mod tests {
         assert_eq!(parsed["data"]["text"], "Hello");
     }
 
+    #[test]
+    fn event_run_end_format() {
+        let event = Event::RunEnd {
+            result: RunResult::LimitReached,
+        };
+        let json = event.to_json_line().unwrap();
+        let parsed: serde_json::Value = serde_json::from_str(&json).unwrap();
+        assert_eq!(parsed["event"], "run_end");
+        assert_eq!(parsed["data"]["result"], "limit_reached");
+    }
+
     #[test]
     fn event_error_format() {
         let event = Event::Error {