feat(governance): add agent market automation surfaces

docs/evaluations/examples/agent_nemotron_external_runner_preflight.sample.json

@@ -0,0 +1,24 @@
+{
+  "schema_version": "agent_nemotron_external_runner_preflight_v1",
+  "candidate_id": "nemo_nemotron_fabric",
+  "fixtures": 1,
+  "candidate_inputs": 1,
+  "requests": 1,
+  "valid": true,
+  "failures": [],
+  "duplicate_fixtures": [],
+  "duplicate_candidate_inputs": [],
+  "duplicate_requests": [],
+  "missing_candidate_inputs": [],
+  "missing_requests": [],
+  "unexpected_candidate_inputs": [],
+  "unexpected_requests": [],
+  "candidate_input_label_leak_records": 0,
+  "request_context_label_leak_records": 0,
+  "request_only_records": 1,
+  "not_replacement_evidence_records": 1,
+  "expected_action_marker_records": 1,
+  "sensitive_marker_present_in_context": false,
+  "sensitive_marker_records": 0,
+  "sensitive_marker_distribution": {}
+}