0.1.63

Test release for Home Assistant HACS.\n\nIncludes:\n- native Home Assistant Assist text streaming for the OpenClaw conversation agent\n- chat card fix so custom:openclaw-chat-card uses Assist pipeline streaming when an OpenClaw Assist pipeline is configured\n- legacy fallback for the card via openclaw.send_message when Assist pipeline streaming is unavailable\n\nVerification:\n- pytest -q tests/test_conversation_streaming.py\n- node --check custom_components/openclaw/www/openclaw-chat-card.js