Release 1.2.0

• feat(n8n): wire up PreRouter for complexity-based routing (#172) (c2f60a0)
• fix(n8n): remove obsolete eslint-disable for no-var-requires (47e251b)
• feat(harness): add trace export and offline cascade simulation (2ebab43)
• fix(harness): wire query into instrumentation records for session.save -> simulate compatibility (54f65fc)
• fix(harness): add query parameter to Anthropic stream wrapper (ad34841)
• chore(n8n): bump to v1.3.0, move @langchain/core to peerDependencies (53b433f)
• style: apply Black formatting to simulate.py and trace_simulation.py (ee7ca55)
• feat(openclaw): add opt-in harness mode flags and docs (#173) (d6d6cf8)
• docs: add cascadeflow vs LiteLLM comparison (#174) (fdda12a)
• fix(docs): use valid compliance presets in litellm comparison (#175) (c1e0eee)
• fix: expose agent module via cascadeflow.agent attribute (699f74c)
• feat(integrations): add full cascade PydanticAI Model integration (#179) (c89e402)
• chore: bump version to 1.2.0 (6412166)