From 54874f9fcb2258cf9974c08560460dae44caccc0 Mon Sep 17 00:00:00 2001
From: Julian Appel <kontakt@julianappel.de>
Date: Fri, 31 Jul 2026 09:56:49 +0200
Subject: [PATCH] Render circuit protection values

---
 src/frontend/utils/circuit-grid-projection.ts |  7 ++++
 tests/circuit-grid-projection.test.ts         | 36 +++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/src/frontend/utils/circuit-grid-projection.ts b/src/frontend/utils/circuit-grid-projection.ts
index ec28259..0f0fc8f 100644
--- a/src/frontend/utils/circuit-grid-projection.ts
+++ b/src/frontend/utils/circuit-grid-projection.ts
@@ -146,6 +146,13 @@ function makeVisibleGridRow(
       value = getDeviceValue(device, column.key);
     } else if (kind === "circuitField" && circuit) {
       value = getCircuitValue(circuit, column.key);
+    } else if (
+      kind === "computed" &&
+      rowType !== "deviceRow" &&
+      circuit &&
+      circuitOnlyColumns.has(column.key)
+    ) {
+      value = getCircuitValue(circuit, column.key);
     } else if (column.key === "rowTotalPower" && device) {
       value = device.rowTotalPower;
     } else if (column.key === "rowTotalPower" && circuit) {
diff --git a/tests/circuit-grid-projection.test.ts b/tests/circuit-grid-projection.test.ts
index c5fdfdb..bdfba8c 100644
--- a/tests/circuit-grid-projection.test.ts
+++ b/tests/circuit-grid-projection.test.ts
@@ -177,6 +177,42 @@ describe("circuit grid projection", () => {
     );
   });
 
+  it("shows circuit protection once on each visible circuit row", () => {
+    const protectedSections = sections.map((section) => ({
+      ...section,
+      circuits: section.circuits.map((circuit) => ({
+        ...circuit,
+        protectionDevice: {
+          type: "FI_LS" as const,
+          ratedCurrentA: 16,
+          tripCharacteristic: "B" as const,
+          rcdType: "A" as const,
+          ratedResidualCurrentMa: 30,
+        },
+      })),
+    }));
+    const rows = buildVisibleGridRows(protectedSections);
+    const protectionValue = (rowType: string) =>
+      rows
+        .find((row) => row.rowType === rowType)
+        ?.cells.find((cell) => cell.cellKey === "protectionSummary")
+        ?.value;
+
+    assert.equal(
+      protectionValue("circuitCompact"),
+      "FI/LS · 16 A · B · Typ A · 30 mA"
+    );
+    assert.equal(
+      protectionValue("circuitSummary"),
+      "FI/LS · 16 A · B · Typ A · 30 mA"
+    );
+    assert.equal(
+      protectionValue("reserveCircuit"),
+      "FI/LS · 16 A · B · Typ A · 30 mA"
+    );
+    assert.equal(protectionValue("deviceRow"), undefined);
+  });
+
   it("normalizes structural component rows around complete circuit groups", () => {
     const component = {
       circuitListId: "list-1",