Add versioned project settings modal

tests/project-state-snapshot.test.ts

@@ -3,16 +3,21 @@ import { describe, it } from "node:test";
 import {
   deserializeProjectStateSnapshot,
   parseProjectStateSnapshot,
+  projectStateSnapshotSchemaVersion,
   serializeProjectStateSnapshot,
 } from "../src/domain/models/project-state-snapshot.model.js";
 import { createNamedProjectSnapshotSchema } from "../src/shared/validation/project-snapshot.schemas.js";
 
 function minimalSnapshot() {
   return {
-    schemaVersion: 1 as const,
+    schemaVersion: projectStateSnapshotSchemaVersion,
     project: {
       id: "project-1",
       name: "Projekt",
+      internalProjectNumber: "INT-1",
+      externalProjectNumber: null,
+      buildingOwner: null,
+      description: null,
       singlePhaseVoltageV: 230,
       threePhaseVoltageV: 400,
     },
@@ -37,6 +42,28 @@ describe("project state snapshot model", () => {
     );
   });
 
+  it("upgrades version-one snapshots with empty project metadata", () => {
+    const legacy = {
+      ...minimalSnapshot(),
+      schemaVersion: 1 as const,
+      project: {
+        id: "project-1",
+        name: "Altprojekt",
+        singlePhaseVoltageV: 230,
+        threePhaseVoltageV: 400,
+      },
+    };
+    const snapshot = parseProjectStateSnapshot(legacy);
+    assert.equal(snapshot.schemaVersion, projectStateSnapshotSchemaVersion);
+    assert.deepEqual(snapshot.project, {
+      ...legacy.project,
+      internalProjectNumber: null,
+      externalProjectNumber: null,
+      buildingOwner: null,
+      description: null,
+    });
+  });
+
   it("rejects duplicate ids and cross-project ownership", () => {
     assert.throws(
       () =>