Feature: LangGraph bridge coverage
  As a developer
  I want Behave tests for RxPyLangGraphBridge
  So that uncovered lines in bridge.py gain coverage

  Background:
    Given I set up a langgraph bridge test harness

  Scenario: Cover bridge lifecycle and operators
    When I create a bridge with mocked graph configuration
    And I exercise bridge graph and stream creation
    And I exercise graph executor branches
    And I exercise state utilities and node operator
    And I exercise conditional routing helpers
    And I exercise router node helpers and cleanup
    Then bridge coverage steps should complete successfully