# AI-generated code and authorship provenance rules.
#
# These rules evaluate the cdx:ai:codegen:* properties (BOM document root) emitted by the
# AI provenance collector (see docs/AI_PROVENANCE.md). They surface governance,
# licensing, and intellectual-property considerations that arise when AI, LLMs,
# or coding agents contribute to a project.

- id: AIPROV-001
  name: "AI/LLM/agent involvement detected in project development"
  description: >-
    Signals of AI, LLM, or coding-agent involvement were detected in this
    project's development, testing, review, or triage. Under current US Copyright
    Office guidance (Copyright and Artificial Intelligence, Part 2, 2025) and
    Thaler v. Perlmutter, works lacking sufficient human authorship are not
    eligible for copyright protection - prompts alone do not make the user the
    author of the output. Code produced solely by AI may therefore receive no
    implicit copyright protection and could be freely used by others unless it is
    protected by another mechanism such as a licence, contract, or trade secret.
  severity: low
  category: ai-provenance
  dry-run-support: full
  standards:
    eu-ai-act:
      - "Transparency and instructions for use"
      - "Technical documentation and traceability"
    nist-ai-rmf:
      - "Govern"
      - "Map"
  condition: |
    $[$nullSafeProp($, 'cdx:ai:codegen:detected') = 'true']
  location: |
    {
      "purl": metadata.component.purl,
      "bomRef": metadata.component."bom-ref"
    }
  message: "AI/LLM/agent involvement detected ({{ $prop(bom, 'cdx:ai:codegen:tools') }}); AI-authored code may receive no implicit copyright protection without sufficient human authorship."
  mitigation: >-
    Document the creative human contributions across the software development
    lifecycle (design, selection, arrangement, and substantial modification of
    AI output). Confirm the licensing and ownership posture for AI-assisted code
    and consider contractual or trade-secret protections where copyright may not
    apply. Attribute AI usage in commits and disclosures for auditability.
  evidence: |
    {
      "tools": $prop(bom, 'cdx:ai:codegen:tools'),
      "phases": $prop(bom, 'cdx:ai:codegen:phases'),
      "confidence": $prop(bom, 'cdx:ai:codegen:confidence'),
      "confidenceBand": $prop(bom, 'cdx:ai:codegen:confidence:band'),
      "signalCount": $prop(bom, 'cdx:ai:codegen:signals:count')
    }

- id: AIPROV-002
  name: "High-confidence AI/LLM/agent authorship signals"
  description: >-
    High-confidence signals (for example bot commit authors or explicit
    AI co-author trailers) indicate that AI or coding agents authored parts of
    this project. Purely AI-generated code is ineligible for copyright protection
    in the absence of sufficiently creative human input, which has ownership,
    licensing, and warranty implications for downstream consumers.
  severity: medium
  category: ai-provenance
  dry-run-support: full
  standards:
    eu-ai-act:
      - "Transparency and instructions for use"
      - "Human oversight"
    nist-ai-rmf:
      - "Govern"
      - "Manage"
  condition: |
    $[
      $nullSafeProp($, 'cdx:ai:codegen:detected') = 'true'
      and $nullSafeProp($, 'cdx:ai:codegen:confidence:band') = 'high'
    ]
  location: |
    {
      "purl": metadata.component.purl,
      "bomRef": metadata.component."bom-ref"
    }
  message: "High-confidence AI/LLM/agent authorship detected ({{ $prop(bom, 'cdx:ai:codegen:tools') }}); review copyright, licensing, and human-authorship posture before relying on ownership of this code."
  mitigation: >-
    Treat this code as potentially uncopyrightable unless human authorship can be
    demonstrated. Record who reviewed, modified, and arranged the AI output;
    verify third-party licence compatibility; and communicate the AI-authorship
    status to consumers who may assume standard copyright ownership.
  evidence: |
    {
      "tools": $prop(bom, 'cdx:ai:codegen:tools'),
      "phases": $prop(bom, 'cdx:ai:codegen:phases'),
      "confidence": $prop(bom, 'cdx:ai:codegen:confidence'),
      "signalCount": $prop(bom, 'cdx:ai:codegen:signals:count')
    }