From d8a368a820f06292c6c54f207c4d5d6956bcda60 Mon Sep 17 00:00:00 2001
From: xbjpku <2000012953@stu.pku.edu.cn>
Date: Mon, 20 Apr 2026 16:57:12 +0800
Subject: [PATCH] feat: add session.turn.completed bus event for plugin hooks

---
 packages/opencode/src/session/prompt.ts  | 3 +++
 packages/opencode/src/session/session.ts | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/packages/opencode/src/session/prompt.ts b/packages/opencode/src/session/prompt.ts
index 431189d19cc0..d86d45860794 100644
--- a/packages/opencode/src/session/prompt.ts
+++ b/packages/opencode/src/session/prompt.ts
@@ -1527,6 +1527,9 @@ NOTE: At any point in time through this workflow you should feel free to ask the
           continue
         }
 
+        // Notify plugins that the turn is complete
+        yield* bus.publish(Session.Event.TurnCompleted, { sessionID })
+
         yield* compaction.prune({ sessionID }).pipe(Effect.ignore, Effect.forkIn(scope))
         return yield* lastAssistant(sessionID)
       },
diff --git a/packages/opencode/src/session/session.ts b/packages/opencode/src/session/session.ts
index ba144da9f030..cb9e60cd8f53 100644
--- a/packages/opencode/src/session/session.ts
+++ b/packages/opencode/src/session/session.ts
@@ -250,6 +250,12 @@ export const Event = {
       error: z.lazy(() => MessageV2.Assistant.shape.error),
     }),
   ),
+  TurnCompleted: BusEvent.define(
+    "session.turn.completed",
+    z.object({
+      sessionID: SessionID.zod,
+    }),
+  ),
 }
 
 export function plan(input: { slug: string; time: { created: number } }) {