Add semantic reconciliation proposal validation

internal/framework/semanticreconcile/schema.go

@@ -0,0 +1,41 @@
+package semanticreconcile
+
+import (
+	"fmt"
+	"io/fs"
+
+	rootassets "gitea.maximumdirect.net/eric/notarius/assets"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+)
+
+const (
+	ResponseSchemaKey  = llm.ResponseSchemaKey("semantic_reconciliation_llm")
+	ResponseSchemaID   = "notarius.generic.semantic_reconciliation.llm"
+	ResponseSchemaName = "notarius_semantic_reconciliation_llm_v1"
+	SchemaVersion      = "v1"
+	SchemaAssetPath    = "schemas/semantic_reconciliation_llm.v1.json"
+)
+
+func schemaAssetFS() (fs.FS, error) {
+	assets, err := fs.Sub(rootassets.FS(), "generic/normalize/deduplication")
+	if err != nil {
+		return nil, fmt.Errorf("scope semantic reconciliation assets: %w", err)
+	}
+	return assets, nil
+}
+
+// LoadResponseSchema returns the private request-local integer proposal
+// contract. It is separate from every durable artifact schema.
+func LoadResponseSchema() (llm.ResponseSchema, error) {
+	assets, err := schemaAssetFS()
+	if err != nil {
+		return llm.ResponseSchema{}, err
+	}
+	return llm.LoadResponseSchema(assets, llm.ResponseSchemaDefinition{
+		Key:       ResponseSchemaKey,
+		ID:        ResponseSchemaID,
+		Version:   SchemaVersion,
+		Name:      ResponseSchemaName,
+		AssetPath: SchemaAssetPath,
+	})
+}