feat(p1): pass MIRRA continuity metadata through to witness artifacts

- Extract continuity_metadata from ExecutionDecision in engine.py
- Pass through ActionDecision.annotations  
- Emit top-level continuity section in witness artifacts
- Include in content_hash coverage

P1 continuity metadata attestation complete.

Author: Sdvegas21

src/clawzero/runtime/engine.py

@@ -1178,12 +1178,14 @@ def _normalize_mvar_result(
             witness_signature = str(getattr(result, "witness_signature", "") or "")
             trust_level = str(provenance.get("taint_level", "")).lower() or self._derive_trust_level(request)
             enforcement_action = getattr(result, "enforcement_action", None)
+            continuity_metadata = getattr(result, "continuity_metadata", None)  # P1 continuity attestation
             annotations = {
                 "witness_signature": witness_signature,
                 "provenance": provenance,
                 "evaluation_trace": [str(item) for item in trace],
                 "enforcement_action": enforcement_action,
                 "taint_markers": self._extract_taint_markers(request),
+                "continuity_metadata": continuity_metadata,  # P1 continuity attestation
             }
             decision = ActionDecision(
                 request_id=request.request_id,
@@ -1232,6 +1234,7 @@ def _normalize_mvar_result(
                     "evaluation_trace": result.get("evaluation_trace", []),
                     "enforcement_action": result.get("enforcement_action"),
                     "taint_markers": self._extract_taint_markers(request),
+                    "continuity_metadata": result.get("continuity_metadata"),  # P1 continuity attestation
                 },
             )
             return self._apply_mvar_compatibility_overrides(request, decision)

src/clawzero/witnesses/generator.py

@@ -102,6 +102,19 @@ def generate(self, request: ActionRequest, decision: ActionDecision) -> dict:
             },
             "annotations": decision.annotations,
         }
+
+        # P1 Continuity Metadata Attestation
+        # Emit top-level continuity section from governor's continuity_metadata
+        continuity_metadata = decision.annotations.get("continuity_metadata")
+        if continuity_metadata and isinstance(continuity_metadata, dict):
+            witness["continuity"] = {
+                "continuity_hash": continuity_metadata.get("continuity_hash"),
+                "protocol_version": continuity_metadata.get("protocol_version"),
+                "constitutional_classification": continuity_metadata.get("constitutional_classification"),
+                "ccl_source": continuity_metadata.get("ccl_source"),
+                "violation_count": continuity_metadata.get("violation_count", 0),
+            }
+
         witness["content_hash"] = self._content_hash(witness)
 
         decision.witness_id = witness_id