{
  "id": "notification_service",
  "label": "Notification Service Canonical",
  "phase": "phase-10",
  "category": "monitoring_observability",
  "status": "ACTIVE_DH_MIRROR",
  "purpose": "Govern how DEVON-DEV emits operational alerts, incident notices and operator-facing notifications.",
  "function": "Route notifications by severity, audience, channel, suppression rule, evidence reference, acknowledgement state and escalation path.",
  "overview": {
    "summary": "Notification Service Canonical owns operator attention. It decides which runtime signal deserves interruption, which channel should carry it and what proof must travel with the alert.",
    "function": "FUNCTION: Route notifications with severity, recipient, channel, trigger, suppression rule, evidence link, acknowledgement state, retry behavior and escalation path.",
    "system_position": "Monitoring Canonical produces telemetry. Incident Management classifies urgency. Scheduler can trigger reminder or escalation cadence. Notification Service keeps Phase 10 from being silent during failure or noisy during normal operation.",
    "failure_impact": "Alert fatigue and missed incidents are the same governance defect from opposite directions. DEVON-DEV needs sparse, evidence-bound, actionable notification; vague noise trains the operator to ignore the exact system meant to protect runtime."
  },
  "failure_impact": "Alert fatigue and missed incidents are the same governance defect from opposite directions. DEVON-DEV needs sparse, evidence-bound, actionable notification; vague noise trains the operator to ignore the exact system meant to protect runtime.",
  "technology_requirements": [
    {
      "technology": "Notification Router",
      "required_for": "Govern how DEVON-DEV emits operational alerts, incident notices and operator-facing notifications.",
      "required_by_phase": "phase-10",
      "required_by_category": "notification_service",
      "required_by_buckets": [
        "Prerequisites",
        "Installation",
        "Configuration",
        "Validation",
        "Observable Evidence",
        "Failure Modes & Recovery",
        "Completion & Promotion"
      ],
      "expected_version": "MISSING until Notification Router is implemented and validated in the future Execution & Monitoring Panel",
      "validation_command": "MISSING until notification_service can prove monitored state, evidence routing and operator-facing visibility",
      "evidence_path": "/home/yeff/public_html/devon/canon/execution/state/dh_sources/notification_service_canonical.json",
      "status_source": "Documentation Hub + future Execution & Monitoring Panel",
      "blocking_if_missing": true,
      "failure_impact": "Alert fatigue and missed incidents are the same governance defect from opposite directions. DEVON-DEV needs sparse, evidence-bound, actionable notification; vague noise trains the operator to ignore the exact system meant to protect runtime."
    }
  ],
  "depends_on": [
    "monitoring_canonical",
    "incident_management",
    "scheduler"
  ],
  "used_by": [
    "operator_panel",
    "self_monitoring",
    "disaster_recovery"
  ]
}