fluid_backend_requirement:
  schema_version: "0.1"

  id: "BR-0041"
  originating_interface: "customer-context-api"
  originating_revision: "R-0081"
  originating_hypothesis: "H-0212"

  backend_service: "payments-service"

  capability:
    title: "Historical payment-state query"
    description: >
      Retrieve payment state as of a specified timestamp.

  semantics:
    consistency: "snapshot"
    required_fields:
      - "payment_id"
      - "state"
      - "effective_at"

  quality:
    p95_latency_ms: 250
    availability: 0.999

  security:
    authorization_scope: "payments.read"
    tenant_isolation: "required"

  expected_usage:
    requests_per_day: 120000

  disposition:
    state: "PLANNED"
    reason: null
    target_ref: "payments-service/roadmap#412"