Add estimate row project device handoff

src/frontend/estimate-balance/estimate-balance-sheet.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import type { ReactNode } from "react";
-import { ArrowDown, ArrowUp, Pencil, Plus, Trash2 } from "lucide-react";
+import { ArrowDown, ArrowUp, PackagePlus, Pencil, Plus, Trash2 } from "lucide-react";
 import {
   calculateEstimateBalance,
   calculateEstimateRow,
@@ -46,6 +46,7 @@ interface EstimateBalanceSheetProps {
   onChange: EstimateBalanceUpdate;
   onEditGroup: (group: EstimateGroupSnapshot) => void;
   onOpenGzfPicker: (groupId: string, rowId: string) => void;
+  onTakeOverRow: (groupId: string, rowId: string) => void;
   onValidityChange: (fieldKey: string, isValid: boolean) => void;
   threePhaseVoltageV: number;
 }
@@ -178,6 +179,7 @@ function EstimateRowLine({
   group,
   onChange,
   onOpenGzfPicker,
+  onTakeOverRow,
   onValidityChange,
   row,
   rowIndex,
@@ -186,6 +188,7 @@ function EstimateRowLine({
   group: EstimateGroupSnapshot;
   onChange: EstimateBalanceUpdate;
   onOpenGzfPicker: (groupId: string, rowId: string) => void;
+  onTakeOverRow: (groupId: string, rowId: string) => void;
   onValidityChange: (fieldKey: string, isValid: boolean) => void;
   row: EstimateRowSnapshot;
   rowIndex: number;
@@ -348,14 +351,24 @@ function EstimateRowLine({
         />
       </td>
       <td className="estimate-actions-cell estimate-no-print">
-        <IconButton
-          disabled={disabled}
-          label={`Zeile löschen (${rowLabel})`}
-          onClick={() => onChange((balance) => removeEstimateRow(balance, group.id, row.id))}
-          variant="danger"
-        >
-          <Trash2 aria-hidden="true" size={13} />
-        </IconButton>
+        <div className="estimate-row-actions">
+          <IconButton
+            disabled={disabled}
+            label={`Als Projektgerät übernehmen (${rowLabel})`}
+            onClick={() => onTakeOverRow(group.id, row.id)}
+            variant="primary"
+          >
+            <PackagePlus aria-hidden="true" size={13} />
+          </IconButton>
+          <IconButton
+            disabled={disabled}
+            label={`Zeile löschen (${rowLabel})`}
+            onClick={() => onChange((balance) => removeEstimateRow(balance, group.id, row.id))}
+            variant="danger"
+          >
+            <Trash2 aria-hidden="true" size={13} />
+          </IconButton>
+        </div>
       </td>
     </tr>
   );
@@ -373,6 +386,7 @@ export function EstimateBalanceSheet({
   onChange,
   onEditGroup,
   onOpenGzfPicker,
+  onTakeOverRow,
   onValidityChange,
   threePhaseVoltageV,
 }: EstimateBalanceSheetProps) {
@@ -546,6 +560,7 @@ export function EstimateBalanceSheet({
                   key={row.id}
                   onChange={onChange}
                   onOpenGzfPicker={onOpenGzfPicker}
+                  onTakeOverRow={onTakeOverRow}
                   onValidityChange={onValidityChange}
                   row={row}
                   rowIndex={rowIndex}

src/frontend/estimate-balance/estimate-project-device-prefill.ts

@@ -0,0 +1,51 @@
+import type { CreateProjectDeviceInput } from "../types";
+import type {
+  EstimateGroupSnapshot,
+  EstimateRowSnapshot,
+} from "../../shared/estimate-balance/estimate-balance";
+
+export type EstimateProjectDeviceInitialValues = Omit<
+  Partial<CreateProjectDeviceInput>,
+  "quantity" | "powerPerUnit"
+> & {
+  quantity?: number | null;
+  powerPerUnit?: number | null;
+};
+
+const connectionLabels = {
+  fixed: "Festanschluss",
+  socket: "Steckdose",
+} as const;
+
+/**
+ * Builds the editable ProjectDevice proposal for one estimate row. Area rows
+ * deliberately leave quantity and power blank because W/m² has no equivalent
+ * in the current ProjectDevice model.
+ */
+export function createEstimateProjectDeviceInitialValues(
+  group: Pick<EstimateGroupSnapshot, "costGroup">,
+  row: Pick<
+    EstimateRowSnapshot,
+    | "name"
+    | "unit"
+    | "connection"
+    | "powerPerUnitW"
+    | "simultaneityFactor"
+    | "cosPhi"
+    | "remark"
+  >
+): EstimateProjectDeviceInitialValues {
+  const name = row.name.trim();
+  return {
+    name,
+    displayName: name,
+    category: "single_phase",
+    connectionKind: row.connection ? connectionLabels[row.connection] : undefined,
+    costGroup: group.costGroup || undefined,
+    quantity: row.unit === "area" ? null : 1,
+    powerPerUnit: row.unit === "area" ? null : row.powerPerUnitW / 1000,
+    simultaneityFactor: row.simultaneityFactor,
+    cosPhi: row.cosPhi,
+    remark: row.remark ?? undefined,
+  };
+}