Add atomic Revit initial import

src/domain/models/project-state-snapshot.model.ts

@@ -24,6 +24,7 @@ import {
   externalImportKinds,
   externalModelSourceTypes,
   externalObjectPresenceStatuses,
+  type ExternalModelStateSnapshot,
 } from "../../external-model/domain/external-model-contracts.js";
 
 export const projectStateSnapshotSchemaVersion = 4 as const;
@@ -333,6 +334,7 @@ const externalImportBatchSchema = z.object({
   fileName: z.string().trim().min(1),
   sha256: z.string().regex(/^[a-f0-9]{64}$/),
   appliedProjectRevision: z.number().int().nonnegative(),
+  configurationVersion: z.number().int().positive(),
   configurationSnapshot: z.custom<ExternalCsvConfiguration>(
     (value) => validateExternalCsvConfiguration(value).success
   ),
@@ -414,6 +416,12 @@ const externalModelStateSchema = z.object({
   objects: z.array(externalModelObjectSchema),
 }).strict();
 
+export function parseExternalModelStateSnapshot(
+  value: unknown
+): ExternalModelStateSnapshot {
+  return externalModelStateSchema.parse(value);
+}
+
 const projectStateSnapshotContents = {
   circuitLists: z.array(circuitListSchema),
   circuitSections: z.array(circuitSectionSchema),