Support decimal commas and cell units

tests/circuit-grid-model.test.ts

@@ -5,6 +5,7 @@ import {
   buildCircuitEditPatch,
   buildDeviceRowEditPatch,
   formatValue,
+  formatCellValue,
   getCircuitSectionLabel,
   getProjectColumnLayoutStorageKey,
   isGridEditorControlTarget,
@@ -173,6 +174,10 @@ describe("circuit grid model", () => {
     assert.equal(formatValue(16, "protectionRatedCurrent"), "16");
     assert.equal(formatValue("single_phase", "phaseType"), "1-phasig");
     assert.equal(formatValue("three_phase", "phaseType"), "3-phasig");
+    assert.equal(formatCellValue(2, "quantity"), "2 St.");
+    assert.equal(formatCellValue(0.123456, "powerPerUnit"), "0,123 kW");
+    assert.equal(formatCellValue(1.25, "rowTotalPower"), "1,25 kW");
+    assert.equal(formatCellValue(undefined, "circuitTotalPower"), "-");
   });
 
   it("uses circuit display values for block sorting and falls back to the first device", () => {
@@ -183,6 +188,7 @@ describe("circuit grid model", () => {
 
   it("parses numeric drafts and rejects invalid values", () => {
     assert.equal(parseNumeric("quantity", " 2.5 "), 2.5);
+    assert.equal(parseNumeric("powerPerUnit", " 1,25 "), 1.25);
     assert.equal(parseNumeric("quantity", ""), undefined);
     assert.throws(() => parseNumeric("quantity", "two"), /Ungültiger Zahlenwert/);
   });