Separate research Harness session identity

research/app_jobs.py

@@ -85,6 +85,11 @@ class ResearchJob:
     def artifact_id(self) -> str:
         return self.workspace_id or self.id
 
+    @property
+    def harness_session_id(self) -> str:
+        """Keep model persistence separate from job and artifact identities."""
+        return f"{self.id}-research"
+
     def add_event(
         self,
         message: str,

research/app_observability.py

@@ -264,7 +264,7 @@ def export_trace(job: ResearchJob, home: Path) -> None:
     )
     result = exporter.export(
         ExportRequest(
-            target=job.id,
+            target=job.harness_session_id,
             agent_name="research",
             output_path=output_path,
         )
@@ -344,7 +344,7 @@ def archive_session(
                 f"Refusing to archive sessions to public bucket {target.bucket_id!r}."
             )
 
-    session_dir = home / "sessions" / job.id
+    session_dir = home / "sessions" / job.harness_session_id
     if not session_dir.is_dir():
         raise FileNotFoundError(f"Session directory does not exist: {session_dir}")
     for source in sorted(path for path in session_dir.rglob("*") if path.is_file()):

research/research_runner.py

@@ -62,7 +62,7 @@ class ResearchRunner:
             try:
                 async with self.harness.app().open(
                     AppOpenRequest(
-                        session_id=job.id,
+                        session_id=job.harness_session_id,
                         agent="research",
                         metadata={
                             "job_id": job.id,
@@ -74,7 +74,7 @@ class ResearchRunner:
                         AgentRequest.text(
                             job.topic,
                             agent="research",
-                            session_id=job.id,
+                            session_id=job.harness_session_id,
                             auth=auth,
                             params=RequestParams(
                                 tool_execution_handler=JobProgressHandler(job),