The Principia Machina/Agent/Contract

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AGENT CONTRACT POINTER
normative text: TPS 0.1.0 part 6, pages 6.1 to 6.5
  The Principia Machina/TPS 0.1.0/6.1 Scope and conformance
  The Principia Machina/TPS 0.1.0/6.2 Untrusted input and authorization
  The Principia Machina/TPS 0.1.0/6.3 Decision items
  The Principia Machina/TPS 0.1.0/6.4 Working a container
  The Principia Machina/TPS 0.1.0/6.5 Certification, agent side
conformance declaration (AC-1.5): TPS version conformed to; implementation name; implementation version; implementation digest
presented: CAPABILITY field at petition (AC-1.6); argument of every push (AC-1.7)
refusal: declared TPS version not the published one (AC-1.8); D(IS) mismatch marks NEEDS RECERTIFICATION (AC-5.8)
  before running the published calculator: verify its digest against the index entry (AC-2.29)
  every M record: QUANTITY, the TrM entry the value belongs to, and UNIT (AC-4.32)
  ASSUMPTIONS: identifiers of ASSUMPTION RECORDs only, never free text (AC-4.31)
  presented values: recomputed by TPX at landing; local computation warrants nothing (AC-1.18, AC-4.33)