fix: wait for session idle after abort

src/runtime/opencode.ts

@@ -92,6 +92,26 @@ export class OpencodeRuntimeAdapter {
     return requireData(response.data, "session.abort");
   }
 
+  async waitForSessionIdle(sessionId: string, timeoutMs = config.OPENCODE_TIMEOUT_MS) {
+    const client = await this.ensureClient();
+    const startedAt = Date.now();
+
+    while (Date.now() - startedAt < timeoutMs) {
+      const response = await client.session.status({});
+      const statuses = requireData(response.data, "session.status");
+      const status = statuses[sessionId];
+      if (!status || status.type === "idle") {
+        return;
+      }
+      await delay(100);
+    }
+
+    logger.warn(
+      { sessionId, timeoutMs },
+      "timed out waiting for opencode session to become idle",
+    );
+  }
+
   async subscribeEvents() {
     const client = await this.ensureClient();
     const response = await client.event.subscribe();
@@ -180,3 +200,9 @@ function requireData<T>(data: T | undefined, operation: string): T {
   }
   return data;
 }
+
+function delay(ms: number) {
+  return new Promise<void>((resolve) => {
+    setTimeout(resolve, ms);
+  });
+}