fix: normalize SessionInfo defaults and local empty-session id

Agent-Logs-Url: https://github.com/MervinPraison/PraisonAI/sessions/2663770e-de83-461c-8b12-3d3571e7e9ee

Co-authored-by: MervinPraison <454862+MervinPraison@users.noreply.github.com>

Author: Copilot

src/praisonai-agents/tests/managed/test_session_info_schema.py

@@ -47,6 +47,11 @@ def test_session_info_partial_usage():
     assert info.usage["input_tokens"] == 0
     assert info.usage["output_tokens"] == 200
 
+    # Test empty usage dict gets both defaults
+    info = SessionInfo(usage={})
+    assert info.usage["input_tokens"] == 0
+    assert info.usage["output_tokens"] == 0
+
 
 def test_session_info_complete():
     """Test SessionInfo with all fields provided."""
@@ -201,5 +206,20 @@ def test_empty_session_local():
     assert result["usage"] == {"input_tokens": 0, "output_tokens": 0}
 
 
+def test_empty_session_local_none_id():
+    """Test LocalManagedAgent.retrieve_session normalizes None session id to empty string."""
+    from praisonai.integrations.managed_local import LocalManagedAgent
+
+    agent = LocalManagedAgent()
+    agent._session_id = None
+    agent.total_input_tokens = 0
+    agent.total_output_tokens = 0
+
+    result = agent.retrieve_session()
+
+    assert result["id"] == ""
+    assert result["status"] == "none"
+
+
 if __name__ == "__main__":
-    pytest.main([__file__])
+    pytest.main([__file__])

src/praisonai/praisonai/integrations/_session_info.py

@@ -31,17 +31,25 @@ class SessionInfo:
 
     def __post_init__(self):
         """Ensure usage field has proper defaults."""
+        if self.id is None:
+            self.id = ""
+        if self.status is None:
+            self.status = "unknown"
+        if self.title is None:
+            self.title = ""
+
         if self.usage is None:
             self.usage = {"input_tokens": 0, "output_tokens": 0}
-        elif "input_tokens" not in self.usage:
-            self.usage["input_tokens"] = 0
-        elif "output_tokens" not in self.usage:
-            self.usage["output_tokens"] = 0
+        else:
+            if "input_tokens" not in self.usage:
+                self.usage["input_tokens"] = 0
+            if "output_tokens" not in self.usage:
+                self.usage["output_tokens"] = 0
 
     def to_dict(self) -> Dict[str, Any]:
         """Convert to dictionary for backward compatibility.
         
         Returns the same structure that retrieve_session() used to return,
         ensuring existing code continues to work.
         """
-        return asdict(self)
+        return asdict(self)

src/praisonai/praisonai/integrations/managed_local.py

@@ -704,7 +704,7 @@ def retrieve_session(self) -> Dict[str, Any]:
         self._sync_usage()
 
         session_info = SessionInfo(
-            id=self._session_id,
+            id=self._session_id or "",
             status="idle" if self._session_id else "none",
             title="",  # Local agent doesn't track titles
             usage={