Add D&D NPC extraction and validation

internal/modules/dnd/extract/npcs/model.go

@@ -0,0 +1,25 @@
+package npcs
+
+import "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
+
+type extractionResponse struct {
+	NPCs []npcResponse `json:"npcs"`
+}
+
+type npcResponse struct {
+	Name          string                    `json:"name"`
+	Aliases       []string                  `json:"aliases"`
+	Description   string                    `json:"description"`
+	Relationships []npcRelationshipResponse `json:"relationships"`
+	SourceRefs    []npcSourceRefResponse    `json:"source_refs"`
+}
+
+type npcRelationshipResponse struct {
+	Target       string `json:"target"`
+	Relationship string `json:"relationship"`
+}
+
+type npcSourceRefResponse struct {
+	StartUnitID shared.UnitRef `json:"start_unit_id"`
+	EndUnitID   shared.UnitRef `json:"end_unit_id"`
+}