Fix artifact metadata version to match v0.3.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: jmcentire

src/pact/schemas.py

@@ -533,7 +533,7 @@ class LearningEntry(BaseModel):
 
 class ArtifactMetadata(BaseModel):
     """Provenance metadata for a generated artifact."""
-    pact_version: str = "0.2.0"
+    pact_version: str = "0.3.0"
     model: str = Field(default="", description="Model ID that generated this artifact")
     component_id: str = ""
     artifact_type: Literal["contract", "test_suite", "implementation", "composition"] = "contract"

tests/test_artifact_metadata.py

@@ -24,7 +24,7 @@ def test_metadata_creation(self):
 
     def test_metadata_defaults(self):
         meta = ArtifactMetadata()
-        assert meta.pact_version == "0.1.0"
+        assert meta.pact_version == "0.3.0"
         assert meta.model == ""
         assert meta.cost_usd == 0.0