Add deterministic incident response page triage fixture family

fixtures/incident_response_page_triage_degraded_v1/README.md

@@ -0,0 +1,3 @@
+# incident_response_page_triage_degraded_v1
+
+Deterministic fixture for incident_response_page_triage (severe).

fixtures/incident_response_page_triage_degraded_v1/expected/admissibility.json

@@ -0,0 +1,18 @@
+{
+  "fixture_id": "incident_response_page_triage_degraded_v1",
+  "fixture_version": "1.0.0",
+  "expected_admissible": false,
+  "must_hold_contracts": [],
+  "must_fail_contracts": [
+    "alert_ack_before_mitigation",
+    "no_orphan_mitigation_steps",
+    "rollback_reachable",
+    "root_cause_links_incident"
+  ],
+  "expected_failure_labels": [
+    "CAUSAL_DEPENDENCY_LOSS",
+    "INVARIANT_VIOLATION",
+    "POLICY_ORDER_BROKEN",
+    "RECOVERY_PATH_INVALID"
+  ]
+}

fixtures/incident_response_page_triage_degraded_v1/expected/failures.json

@@ -0,0 +1,9 @@
+{
+  "expected_failures": [
+    "CAUSAL_DEPENDENCY_LOSS",
+    "INVARIANT_VIOLATION",
+    "POLICY_ORDER_BROKEN",
+    "RECOVERY_PATH_INVALID"
+  ],
+  "disallowed_failures": []
+}

fixtures/incident_response_page_triage_degraded_v1/original/contracts/alert_ack_before_mitigation.json

@@ -0,0 +1,13 @@
+{
+  "contract_id": "alert_ack_before_mitigation",
+  "layer": "operational",
+  "type": "ordering",
+  "definition": {
+    "required_sequence": [
+      "alert_received",
+      "alert_acknowledged",
+      "mitigation_started"
+    ]
+  },
+  "severity": "CRITICAL"
+}

fixtures/incident_response_page_triage_degraded_v1/original/contracts/no_orphan_mitigation_steps.json

@@ -0,0 +1,9 @@
+{
+  "contract_id": "no_orphan_mitigation_steps",
+  "layer": "relational",
+  "type": "invariant",
+  "definition": {
+    "rule": "no_orphan_dependencies"
+  },
+  "severity": "HIGH"
+}

fixtures/incident_response_page_triage_degraded_v1/original/contracts/rollback_reachable.json

@@ -0,0 +1,13 @@
+{
+  "contract_id": "rollback_reachable",
+  "layer": "relational",
+  "type": "reachability",
+  "definition": {
+    "from": "mitigation_started",
+    "to": [
+      "rollback_available"
+    ],
+    "min_paths": 1
+  },
+  "severity": "HIGH"
+}

fixtures/incident_response_page_triage_degraded_v1/original/contracts/root_cause_links_incident.json

@@ -0,0 +1,14 @@
+{
+  "contract_id": "root_cause_links_incident",
+  "layer": "relational",
+  "type": "causality",
+  "definition": {
+    "required_causal_edges": [
+      [
+        "root_cause_identified",
+        "mitigation_started"
+      ]
+    ]
+  },
+  "severity": "HIGH"
+}

fixtures/incident_response_page_triage_degraded_v1/original/dependency_graph.json

@@ -0,0 +1,92 @@
+{
+  "graph_version": "1.0",
+  "nodes": [
+    {
+      "node_id": "alert_received",
+      "label": "Alert received",
+      "metadata": {
+        "phase": "intake"
+      }
+    },
+    {
+      "node_id": "alert_acknowledged",
+      "label": "Alert acknowledged",
+      "metadata": {
+        "phase": "intake"
+      }
+    },
+    {
+      "node_id": "incident_classified",
+      "label": "Incident classified",
+      "metadata": {
+        "phase": "triage"
+      }
+    },
+    {
+      "node_id": "root_cause_identified",
+      "label": "Root cause identified",
+      "metadata": {
+        "phase": "analysis"
+      }
+    },
+    {
+      "node_id": "mitigation_started",
+      "label": "Mitigation started",
+      "metadata": {
+        "phase": "response"
+      }
+    },
+    {
+      "node_id": "rollback_available",
+      "label": "Rollback available",
+      "metadata": {
+        "phase": "response"
+      }
+    },
+    {
+      "node_id": "escalate_to_human",
+      "label": "Escalate to human",
+      "metadata": {
+        "phase": "governance"
+      }
+    }
+  ],
+  "edges": [
+    {
+      "source": "alert_received",
+      "target": "alert_acknowledged",
+      "relation": "PREREQUISITE",
+      "metadata": {}
+    },
+    {
+      "source": "alert_acknowledged",
+      "target": "incident_classified",
+      "relation": "TEMPORAL",
+      "metadata": {}
+    },
+    {
+      "source": "incident_classified",
+      "target": "root_cause_identified",
+      "relation": "CAUSAL",
+      "metadata": {}
+    },
+    {
+      "source": "root_cause_identified",
+      "target": "mitigation_started",
+      "relation": "CAUSAL",
+      "metadata": {}
+    },
+    {
+      "source": "mitigation_started",
+      "target": "rollback_available",
+      "relation": "RECOVERY",
+      "metadata": {}
+    },
+    {
+      "source": "mitigation_started",
+      "target": "escalate_to_human",
+      "relation": "RECOVERY",
+      "metadata": {}
+    }
+  ]
+}

fixtures/incident_response_page_triage_degraded_v1/original/state.json

@@ -0,0 +1,23 @@
+{
+  "evidence": {
+    "incident_id": "INC-2026-fixture",
+    "priority": "P1",
+    "service": "api-gateway"
+  },
+  "constraints": {
+    "requires_alert_ack": true,
+    "requires_human_escalation_path": true
+  },
+  "recovery_paths": {
+    "mitigation_started": [
+      "rollback_available",
+      "escalate_to_human"
+    ]
+  },
+  "dependencies": {
+    "mitigation_started": [
+      "alert_acknowledged",
+      "root_cause_identified"
+    ]
+  }
+}

fixtures/incident_response_page_triage_degraded_v1/original/trace.json

@@ -0,0 +1,32 @@
+{
+  "events": [
+    {
+      "action": "alert_received",
+      "step": 1
+    },
+    {
+      "action": "alert_acknowledged",
+      "step": 2
+    },
+    {
+      "action": "incident_classified",
+      "step": 3
+    },
+    {
+      "action": "root_cause_identified",
+      "step": 4
+    },
+    {
+      "action": "mitigation_started",
+      "step": 5
+    },
+    {
+      "action": "rollback_available",
+      "step": 6
+    },
+    {
+      "action": "escalate_to_human",
+      "step": 7
+    }
+  ]
+}

fixtures/incident_response_page_triage_degraded_v1/reconstructed/dependency_graph.json

@@ -0,0 +1,74 @@
+{
+  "graph_version": "1.0",
+  "nodes": [
+    {
+      "node_id": "alert_received",
+      "label": "Alert received",
+      "metadata": {
+        "phase": "intake"
+      }
+    },
+    {
+      "node_id": "alert_acknowledged",
+      "label": "Alert acknowledged",
+      "metadata": {
+        "phase": "intake"
+      }
+    },
+    {
+      "node_id": "incident_classified",
+      "label": "Incident classified",
+      "metadata": {
+        "phase": "triage"
+      }
+    },
+    {
+      "node_id": "root_cause_identified",
+      "label": "Root cause identified",
+      "metadata": {
+        "phase": "analysis"
+      }
+    },
+    {
+      "node_id": "mitigation_started",
+      "label": "Mitigation started",
+      "metadata": {
+        "phase": "response"
+      }
+    },
+    {
+      "node_id": "rollback_available",
+      "label": "Rollback available",
+      "metadata": {
+        "phase": "response"
+      }
+    },
+    {
+      "node_id": "escalate_to_human",
+      "label": "Escalate to human",
+      "metadata": {
+        "phase": "governance"
+      }
+    }
+  ],
+  "edges": [
+    {
+      "source": "alert_received",
+      "target": "alert_acknowledged",
+      "relation": "PREREQUISITE",
+      "metadata": {}
+    },
+    {
+      "source": "alert_acknowledged",
+      "target": "incident_classified",
+      "relation": "TEMPORAL",
+      "metadata": {}
+    },
+    {
+      "source": "mitigation_started",
+      "target": "escalate_to_human",
+      "relation": "RECOVERY",
+      "metadata": {}
+    }
+  ]
+}

fixtures/incident_response_page_triage_degraded_v1/reconstructed/state.json

@@ -0,0 +1,23 @@
+{
+  "evidence": {
+    "incident_id": "INC-2026-fixture",
+    "priority": "P1",
+    "service": "api-gateway"
+  },
+  "constraints": {
+    "requires_alert_ack": true,
+    "requires_human_escalation_path": true
+  },
+  "recovery_paths": {
+    "mitigation_started": [
+      "rollback_available",
+      "escalate_to_human"
+    ]
+  },
+  "dependencies": {
+    "mitigation_started": [
+      "alert_acknowledged",
+      "root_cause_identified"
+    ]
+  }
+}

fixtures/incident_response_page_triage_degraded_v1/reconstructed/trace.json

@@ -0,0 +1,28 @@
+{
+  "events": [
+    {
+      "action": "alert_received",
+      "step": 1
+    },
+    {
+      "action": "mitigation_started",
+      "step": 2
+    },
+    {
+      "action": "incident_classified",
+      "step": 3
+    },
+    {
+      "action": "alert_acknowledged",
+      "step": 4
+    },
+    {
+      "action": "rollback_available",
+      "step": 5
+    },
+    {
+      "action": "escalate_to_human",
+      "step": 6
+    }
+  ]
+}

fixtures/incident_response_page_triage_mild_v1/README.md

@@ -0,0 +1,3 @@
+# incident_response_page_triage_mild_v1
+
+Deterministic fixture for incident_response_page_triage (mild).

fixtures/incident_response_page_triage_mild_v1/expected/admissibility.json

@@ -0,0 +1,12 @@
+{
+  "fixture_id": "incident_response_page_triage_mild_v1",
+  "fixture_version": "1.0.0",
+  "expected_admissible": false,
+  "must_hold_contracts": [],
+  "must_fail_contracts": [
+    "rollback_reachable"
+  ],
+  "expected_failure_labels": [
+    "RECOVERY_PATH_INVALID"
+  ]
+}

fixtures/incident_response_page_triage_mild_v1/expected/failures.json

@@ -0,0 +1,6 @@
+{
+  "expected_failures": [
+    "RECOVERY_PATH_INVALID"
+  ],
+  "disallowed_failures": []
+}