Library / First Principles Framework (FPF) - Core Conceptual Specification
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Source changed 2026-10-03 08:25:59 UTC · snapshot created 2026-10-03 08:26:43 UTC · last check 2026-10-03 10:15:17 UTC

C.30:4.7 - Minimal boundary notes

Use these notes when a common architecture phrase is close to a claim defined or tested by another pattern but full use of that pattern is not yet needed.

Use the thinnest claim or boundary form that preserves the next architecture move. Use a fuller claim or relation record only when the content or independently admitted relation being used cannot be inspected, compared, refreshed, or bounded without it. Typical thin forms are ArchitectureMathLensUseBoundary before C.29 Mini or Full, AffectedArchitectureStructureNote before an architecture decision record, and ArchitectureStructuralCharacteristicQBundleClaimLine before full measurement, causal, evidence, or reusable direct-relation records.

InterfaceSignatureBoundaryNote ::= {
  phraseOrArtifactRef,
  apparentClaim:
    interface | signature | port | endpoint | connector | link |
    API | protocol | E.18 transformation-flow relation | E.18 transformation-flow path | mechanism reference,
  recoveredKind,
  claimPatternRefs,
  admissibleUse,
  nonAdmissibleUse
}

ModuleRelationBoundaryNote ::= {
  phraseOrArtifactRef,
  apparentClaim:
    module | component | package | platform | open architecture |
    recoveredModuleInterfaceSourceLabel |
    typed control-structure relation,
  moduleInterfaceRepairClaimCurrent?: yes | no,
  openOrPlatformClaimCurrent?: yes | no,
  selectedModuleInterfaceRelationRefs?,
  variationPointRef?,
  substitutabilityPolicyRef?,
  interfaceConformanceEvidencePatternRef?,
  changePolicyOrRelationRef?,
  consumerMigrationBoundary?,
  versionOrUpdateChannelRef?,
  secureDefaultOrHardeningBoundary?,
  claimPatternRefs,
  admissibleUse,
  nonAdmissibleUse
}

These notes are not substitutes for the module-and-interface repair pattern named by value, interface specifications, signature records, conformance evidence, or module-and-interface repair. An open or platform label is not substitutability proof, security proof, scale proof, assurance, or universal maturity evidence. A source label such as layer, stack, block, expert, cache, router, or gate enters this note only after C.30.STRAT recovers a module-interface or adjacent architecture-relevant item. It becomes architecture-relevant only through local structure, interface, variation, substitution, migration, update, and hardening boundaries. Relation-heavy wording inside these notes remains a Plain cue until the relevant module or interface relation is identified, the relation establishing the asserted use is identified, or the pattern that defines or tests the non-architecture claim is named. The note keeps first use honest until that claim kind is recoverable by value.