Show logical feeder loads in project and circuit views

src/frontend/components/cable-sizing-defaults.ts

@@ -22,6 +22,9 @@ export function deriveCircuitPhase(
  * Rows without cos φ count as 1; a circuit without load yields 1.
  */
 export function deriveCircuitCosPhi(circuit: CircuitTreeCircuitDto): number {
+  if (Number.isFinite(circuit.circuitCosPhi) && circuit.circuitCosPhi > 0) {
+    return Math.round(circuit.circuitCosPhi * 100) / 100;
+  }
   let activePowerKw = 0;
   let apparentPowerKva = 0;
   for (const row of circuit.deviceRows) {

src/frontend/components/circuit-tree-editor.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import Link from "next/link";
 import { DragEvent, KeyboardEvent, useEffect, useMemo, useRef, useState } from "react";
 import {
   ArrowDown,
@@ -3293,6 +3294,23 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
           threePhaseVoltageV={data.threePhaseVoltageV}
         />
       ) : null}
+      {data.feedingReference ? (
+        <div className="alert alert-info py-2" role="status">
+          Gespeist von{" "}
+          <Link
+            href={`/projects/${projectId}/circuit-lists/${
+              data.feedingReference.circuitListId
+            }/tree-edit`}
+          >
+            {data.feedingReference.distributionBoardNumber ??
+              data.feedingReference.distributionBoardName}
+            {data.feedingReference.circuitEquipmentIdentifier ?? ""}
+          </Link>
+          {data.feedingReference.circuitId
+            ? null
+            : " (speisender Stromkreis noch nicht festgelegt)"}
+        </div>
+      ) : null}
       <div className="editor-toolbar">
         <IconButton
           disabled={!historyState || historyState.undoDepth === 0 || historyBusy || isSaving}
@@ -4062,6 +4080,8 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                       ? "summary-row"
                       : row.rowType === "deviceRow"
                         ? "device-row"
+                        : row.rowType === "downstreamBoardLoad"
+                          ? "downstream-board-load-row"
                         : row.rowType === "reserveCircuit"
                           ? "empty-circuit-row"
                           : row.rowType === "placeholder"
@@ -4667,7 +4687,10 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                         : ""
                     }`}
                   >
-                    {row.circuit && row.rowType !== "deviceRow" ? (
+                    {row.circuit &&
+                    (row.rowType === "circuitCompact" ||
+                      row.rowType === "circuitSummary" ||
+                      row.rowType === "reserveCircuit") ? (
                       <>
                         <IconButton
                           disabled={isSaving}

src/frontend/components/distribution-board-info-card.tsx

@@ -13,7 +13,7 @@ export type DistributionBoardInfoDraft = Record<DistributionBoardInfoField, stri
 const placeholders: Record<DistributionBoardInfoField, string> = {
   boardNumber: "z. B. UV 1.1",
   location: "z. B. Raum 003 Technik",
-  fedFrom: "z. B. HV 0.1 oder HAK / Zähleranlage",
+  fedFrom: "z. B. HAK, Zähleranlage, Trafo oder NEA",
   remark: "",
 };
 
@@ -98,8 +98,8 @@ export function DistributionBoardInfoCard({
             )}
             {field === "fedFrom" ? (
               <div className="form-text">
-                Vorerst Freitext. Die logische Verknüpfung mit dem
-                speisenden Verteiler folgt.
+                Für externe Einspeisungen oder ergänzende Hinweise. Eine
+                speisende Projektverteilung wird oben logisch verknüpft.
               </div>
             ) : null}
           </div>