feat: add teaching asset prompts

internal/workflows/contracts.go

@@ -192,3 +192,52 @@ const (
 	UnlockReviewCard     UnlockKind = "review_card"
 	UnlockPortfolioEntry UnlockKind = "portfolio_entry"
 )
+
+type OntologyGap struct {
+	Track         string            `json:"track"`
+	MissingOrWeak []OntologyGapItem `json:"missing_or_weak"`
+}
+
+type OntologyGapItem struct {
+	Concept           ConceptRef      `json:"concept"`
+	GapType           OntologyGapType `json:"gap_type"`
+	Reason            string          `json:"reason"`
+	SupportingSources []EvidenceRef   `json:"supporting_sources"`
+	ProposedAction    GapAction       `json:"proposed_action"`
+}
+
+type OntologyGapType string
+
+const (
+	OntologyGapMissingPrerequisite OntologyGapType = "missing_prerequisite"
+	OntologyGapWeakEvidence        OntologyGapType = "weak_evidence"
+	OntologyGapOutdated            OntologyGapType = "outdated"
+	OntologyGapNeedsRubric         OntologyGapType = "needs_rubric"
+)
+
+type GapAction string
+
+const (
+	GapActionGenerateCandidate GapAction = "generate_candidate"
+	GapActionRequestSource     GapAction = "request_source"
+	GapActionHumanReview       GapAction = "human_review"
+)
+
+type TeachingAssetPrompt struct {
+	Concept                     ConceptRef    `json:"concept"`
+	AssetType                   AssetType     `json:"asset_type"`
+	Prompt                      string        `json:"prompt"`
+	SourceEvidence              []EvidenceRef `json:"source_evidence"`
+	ModelKey                    string        `json:"model_key"`
+	RequiresModelIDVerification bool          `json:"requires_model_id_verification"`
+	ReviewState                 string        `json:"review_state"`
+}
+
+type AssetType string
+
+const (
+	AssetDiagram       AssetType = "diagram"
+	AssetLessonSlice   AssetType = "lesson_slice"
+	AssetWorksheet     AssetType = "worksheet"
+	AssetInterviewCard AssetType = "interview_card"
+)