Add distribution power summaries

tests/project-state-snapshot.test.ts

@@ -103,6 +103,7 @@ describe("project state snapshot model", () => {
         ...previous.distributionBoards[0],
         floorId: null,
         supplyType: null,
+        simultaneityFactor: 1,
       },
     ]);
   });
@@ -158,6 +159,30 @@ describe("project state snapshot model", () => {
     assert.equal(snapshot.projectDevices[0]?.voltageV, 400);
   });
 
+  it("upgrades version-five distribution boards with a neutral factor", () => {
+    const previous = {
+      ...minimalSnapshot(),
+      schemaVersion: 5 as const,
+      distributionBoards: [
+        {
+          id: "board-1",
+          projectId: "project-1",
+          name: "UV 1",
+          floorId: null,
+          supplyType: "AV" as const,
+        },
+      ],
+    };
+
+    const snapshot = parseProjectStateSnapshot(previous);
+
+    assert.equal(snapshot.schemaVersion, projectStateSnapshotSchemaVersion);
+    assert.equal(
+      snapshot.distributionBoards[0]?.simultaneityFactor,
+      1
+    );
+  });
+
   it("rejects duplicate ids and cross-project ownership", () => {
     assert.throws(
       () =>
@@ -170,6 +195,7 @@ describe("project state snapshot model", () => {
               name: "UV 1",
               floorId: null,
               supplyType: null,
+              simultaneityFactor: 1,
             },
             {
               id: "board-1",
@@ -177,6 +203,7 @@ describe("project state snapshot model", () => {
               name: "UV 2",
               floorId: null,
               supplyType: null,
+              simultaneityFactor: 1,
             },
           ],
         }),
@@ -211,6 +238,7 @@ describe("project state snapshot model", () => {
               name: "UV 1",
               floorId: "missing",
               supplyType: "AV",
+              simultaneityFactor: 1,
             },
           ],
         }),