feat: dockerize OpenFang as vendored tool runtime sidecar (#96)

tests/test_openfang_config.py

@@ -0,0 +1,25 @@
+"""Chunk 1: OpenFang config settings — test first, implement second."""
+
+
+def test_openfang_url_default():
+    """Settings should expose openfang_url with a sensible default."""
+    from config import settings
+
+    assert hasattr(settings, "openfang_url")
+    assert settings.openfang_url == "http://localhost:8080"
+
+
+def test_openfang_enabled_default_false():
+    """OpenFang integration should be opt-in (disabled by default)."""
+    from config import settings
+
+    assert hasattr(settings, "openfang_enabled")
+    assert settings.openfang_enabled is False
+
+
+def test_openfang_timeout_default():
+    """Timeout should be generous (some hands are slow)."""
+    from config import settings
+
+    assert hasattr(settings, "openfang_timeout")
+    assert settings.openfang_timeout == 120