id: template-errors
name: System Status & Error Suite
category: errors
purpose: >
  Resilient, high-contrast system status and error views including 404 (Not Found), 500 (Internal Server Error), and Maintenance (Scheduled Downtime & Progress Counter).

patterns:
  - empty-state
  - form-actions

components:
  - card
  - button
  - badge
  - input
  - alert

views:
  - 404: "Not found error with contextual search, quick breadcrumb links, and return-home action"
  - 500: "Internal server error with telemetry incident trace ID, retry action, and status page link"
  - maintenance: "Scheduled downtime with live countdown timers, upgrade progress bar, and email notify-me subscription"

ai:
  purpose: "System resilience, error recovery, maintenance downtime, and telemetry feedback"
  use_when:
    - "Handling HTTP 404, 500, 503 error codes and scheduled infrastructure maintenance"
  avoid:
    - "Generic unbranded error screens without recovery actions or diagnostic incident IDs"