fix(honcho): strip whitespace from conclusion and delete_id inputs

Models may send whitespace-only strings like {"conclusion": " "} which
pass bool() but create meaningless conclusions. Strip both inputs so
whitespace-only values are treated as empty.

Adds tests for whitespace-only conclusion and delete_id.

Reviewed-by: @erosika

plugins/memory/honcho/__init__.py

@@ -1008,8 +1008,8 @@ class HonchoMemoryProvider(MemoryProvider):
                 return json.dumps({"result": "\n\n".join(parts) or "No context available."})
 
             elif tool_name == "honcho_conclude":
-                delete_id = args.get("delete_id")
+                delete_id = (args.get("delete_id") or "").strip()
-                conclusion = args.get("conclusion", "")
+                conclusion = args.get("conclusion", "").strip()
                 peer = args.get("peer", "user")
 
                 has_delete_id = bool(delete_id)

tests/honcho_plugin/test_session.py

@@ -501,6 +501,30 @@ class TestConcludeToolDispatch:
         provider._manager.create_conclusion.assert_not_called()
         provider._manager.delete_conclusion.assert_not_called()
 
+    def test_honcho_conclude_rejects_whitespace_only_conclusion(self):
+        """Whitespace-only conclusion should be treated as empty."""
+        import json
+        provider = HonchoMemoryProvider()
+        provider._session_initialized = True
+        provider._session_key = "telegram:123"
+        provider._manager = MagicMock()
+        result = provider.handle_tool_call("honcho_conclude", {"conclusion": "   "})
+        parsed = json.loads(result)
+        assert parsed == {"error": "Exactly one of conclusion or delete_id must be provided."}
+        provider._manager.create_conclusion.assert_not_called()
+
+    def test_honcho_conclude_rejects_whitespace_only_delete_id(self):
+        """Whitespace-only delete_id should be treated as empty."""
+        import json
+        provider = HonchoMemoryProvider()
+        provider._session_initialized = True
+        provider._session_key = "telegram:123"
+        provider._manager = MagicMock()
+        result = provider.handle_tool_call("honcho_conclude", {"delete_id": "  "})
+        parsed = json.loads(result)
+        assert parsed == {"error": "Exactly one of conclusion or delete_id must be provided."}
+        provider._manager.delete_conclusion.assert_not_called()
+
 
 # ---------------------------------------------------------------------------
 # Message chunking