# AI Remediation Plan Attestation

## Module
Attestor

## Status
IMPLEMENTED

## Description
Predicate types for AI-generated remediation plans including steps, risk assessments, and action types as signed attestation artifacts.

## Implementation Details
- **AIRemediationPlanPredicate**: `src/Attestor/__Libraries/StellaOps.Attestor.ProofChain/Predicates/AI/AIRemediationPlanPredicate.cs` -- extends `AIArtifactBasePredicate` with remediation-specific fields.
- **RemediationStep**: `RemediationStep.cs` -- describes a single remediation action with status tracking.
- **RemediationActionType enum**: `RemediationActionType.cs` -- types of remediation actions (e.g., upgrade, patch, configuration change).
- **RemediationStepStatus enum**: `RemediationStepStatus.cs` -- tracks step execution status.
- **RemediationRiskAssessment**: `RemediationRiskAssessment.cs` -- assesses risk impact of applying the remediation.
- **RemediationVerificationStatus enum**: `RemediationVerificationStatus.cs` -- verification state after remediation application.
- **Classifier Integration**: `AIAuthorityClassifier.Remediation.cs` classifies remediation plans; `AIAuthorityClassifier.RemediationScore.cs` computes quality scores for evidence-backing determination.
- **Statement**: `__Libraries/StellaOps.Attestor.ProofChain/Statements/AIRemediationPlanStatement.cs` -- wraps predicate as in-toto statement.
- **Base Class**: `AIArtifactBasePredicate.cs` provides `ModelIdentifier` (`AIModelIdentifier`), `DecodingParameters` (`AIDecodingParameters`), and timestamp fields inherited by the remediation predicate.

## E2E Test Plan
- [ ] Create an `AIRemediationPlanPredicate` with multiple `RemediationStep` entries of different `RemediationActionType` values and verify JSON serialization
- [ ] Create a remediation plan with a `RemediationRiskAssessment` and verify the risk level is correctly captured in the predicate
- [ ] Classify a remediation plan via `AIAuthorityClassifier.Remediation` with high citation/evidence scores and verify `EvidenceBacked` authority
- [ ] Classify a remediation plan with low evidence backing and verify `Suggestion` authority
- [ ] Wrap the predicate in `AIRemediationPlanStatement` and verify it produces a valid in-toto statement
- [ ] Verify `RemediationStepStatus` progression (e.g., Pending -> InProgress -> Completed) is correctly serialized
- [ ] Create a remediation plan with `RemediationVerificationStatus` set and verify the verification state persists through serialization