CLI: --as <Agent> from a second session's worktree of the same app runs as that session (Codex2 copies the Codex app's shared --as Codex instructions)

harbor/cli.py

@@ -399,6 +399,12 @@ def main(argv=None):
     if not agent:
         agent = project.identity_for(os.getcwd())
         source = "working directory" if agent else None
+    else:
+        # a second session of the same app (Codex2 in the Codex app) copies the app's shared `--as Codex`
+        # instructions; its working folder says who it is
+        session = project.session_identity(agent, os.getcwd())
+        if session != agent:
+            agent, source = session, f"working directory (same app as {agent})"
 
     recorded = []