Add estimate row project device handoff

tests/estimate-balance-frontend.test.ts

@@ -28,6 +28,7 @@ import {
   getTodayIsoDate,
   parseGermanDecimal,
 } from "../src/frontend/estimate-balance/estimate-balance-format.js";
+import { createEstimateProjectDeviceInitialValues } from "../src/frontend/estimate-balance/estimate-project-device-prefill.js";
 import {
   ApiRequestError,
   createEstimateBalance,
@@ -264,6 +265,55 @@ describe("estimate balance document editing", () => {
   });
 });
 
+describe("estimate row to project device prefill", () => {
+  it("maps a piece row to one reusable project-device template", () => {
+    const balance = sampleBalance();
+    const group = balance.groups[0]!;
+    const row = {
+      ...group.rows[0]!,
+      name: " Hebeanlage ",
+      quantity: 4,
+      connection: "fixed" as const,
+      powerPerUnitW: 1250,
+      simultaneityFactor: 0.8,
+      cosPhi: 0.9,
+      remark: "bauseits",
+    };
+
+    assert.deepEqual(createEstimateProjectDeviceInitialValues(group, row), {
+      name: "Hebeanlage",
+      displayName: "Hebeanlage",
+      category: "single_phase",
+      connectionKind: "Festanschluss",
+      costGroup: "410",
+      quantity: 1,
+      powerPerUnit: 1.25,
+      simultaneityFactor: 0.8,
+      cosPhi: 0.9,
+      remark: "bauseits",
+    });
+  });
+
+  it("leaves quantity and power blank for an area row", () => {
+    const balance = sampleBalance();
+    const group = balance.groups[1]!;
+    const row = {
+      ...createEstimateRow(0, () => "area-row"),
+      name: "Bürofläche",
+      unit: "area" as const,
+      connection: "socket" as const,
+      quantity: 250,
+      powerPerUnitW: 15,
+    };
+
+    const initial = createEstimateProjectDeviceInitialValues(group, row);
+    assert.equal(initial.quantity, null);
+    assert.equal(initial.powerPerUnit, null);
+    assert.equal(initial.connectionKind, "Steckdose");
+    assert.equal(initial.costGroup, "440");
+  });
+});
+
 describe("estimate balance saving", () => {
   it("builds the trimmed server document with null for empty optional texts", () => {
     let balance = sampleBalance();