feat: add ontology material ingestion

internal/ontology/catalog.go

@@ -0,0 +1,38 @@
+package ontology
+
+import "tutor/internal/workflows"
+
+var knownConcepts = []knownConcept{
+	{
+		Ref:      workflows.ConceptRef{ID: "http-idempotency", Label: "HTTP idempotency", Track: "backend-developer"},
+		Keywords: []string{"idempotent", "idempotency", "retry", "retries"},
+	},
+	{
+		Ref:      workflows.ConceptRef{ID: "database-indexes", Label: "Database indexes", Track: "backend-developer"},
+		Keywords: []string{"index", "indexes", "database index", "query plan"},
+	},
+	{
+		Ref:      workflows.ConceptRef{ID: "cache-invalidation", Label: "Cache invalidation", Track: "backend-developer"},
+		Keywords: []string{"cache", "invalidation", "ttl"},
+	},
+	{
+		Ref:      workflows.ConceptRef{ID: "transactions", Label: "Transactions", Track: "backend-developer"},
+		Keywords: []string{"transaction", "transactions", "atomic", "rollback"},
+	},
+}
+
+var prerequisiteRules = []prerequisiteRule{
+	{FromID: "http-idempotency", ToID: "transactions"},
+	{FromID: "transactions", ToID: "cache-invalidation"},
+	{FromID: "database-indexes", ToID: "cache-invalidation"},
+}
+
+type knownConcept struct {
+	Ref      workflows.ConceptRef
+	Keywords []string
+}
+
+type prerequisiteRule struct {
+	FromID string
+	ToID   string
+}