Add Revit initial import apply API

tests/external-csv-api-contract.test.ts

@@ -1,6 +1,7 @@
 import assert from "node:assert/strict";
 import { describe, it } from "node:test";
 import {
+  applyExternalInitialImportSchema,
   planExternalInitialImportSchema,
   previewExternalCsvSchema,
   updateExternalCsvConfigurationSchema,
@@ -31,6 +32,19 @@ describe("external CSV API contracts", () => {
       }).success,
       true
     );
+    assert.equal(
+      applyExternalInitialImportSchema.safeParse({
+        expectedRevision: 5,
+        expectedConfigurationVersion: 2,
+        expectedSha256: "a".repeat(64),
+        fileName: "revit.csv",
+        contentBase64: "YWJj",
+        sourceName: "Revit-Gesamtmodell",
+        roomDecisions: [],
+        familyProjectDeviceDecisions: [],
+      }).success,
+      true
+    );
   });
 
   it("rejects stale-shaped, oversized and unknown request fields", () => {