Retain repair diagnostics and correction lineage

internal/framework/validators/models.go

@@ -36,6 +36,9 @@ type Request struct {
 	StageID    *string `json:"stage_id,omitempty"`
 	// ReportDiagnosticError may be called concurrently; it must not affect processing.
 	ReportDiagnosticError func(error)                            `json:"-"`
+	IndependentEvidence   bool                                   `json:"-"`
+	RepairProposalIndex   *int                                   `json:"repair_proposal_index,omitempty"`
+	RepairAttempt         *int                                   `json:"repair_attempt,omitempty"`
 	SectionIndex          *int                                   `json:"section_index,omitempty"`
 	WorkingTranscript     *schema.Transcript                     `json:"-"`
 	CandidateProposal     []proposals.EnrichedCorrectionProposal `json:"candidate_proposals"`