feat(lifecycle): add selectable common allocation mode (expense/income ratio)

PTC/management_dashboard_preview.html

@@ -1924,6 +1924,7 @@
             const [lifecycleAccountDetailModalLoading, setLifecycleAccountDetailModalLoading] = useState(false);
             const [lifecycleAllocationModal, setLifecycleAllocationModal] = useState(null);
             const [lifecycleAllocationSaving, setLifecycleAllocationSaving] = useState(false);
+            const [lifecycleCommonAllocationSaving, setLifecycleCommonAllocationSaving] = useState(false);
             const [projectEditModalOpen, setProjectEditModalOpen] = useState(false);
             const [relatedProjectSearch, setRelatedProjectSearch] = useState("");
             const [projectTxnDateFrom, setProjectTxnDateFrom] = useState("");
@@ -3605,6 +3606,34 @@
                 }
             }
 
+            async function saveLifecycleCommonAllocationMode(nextMode) {
+                if (!selectedProjectCode) return;
+                if (!["expense_ratio", "income_ratio"].includes(nextMode || "")) return;
+                setLifecycleCommonAllocationSaving(true);
+                setError("");
+                try {
+                    const res = await fetch(`${API_BASE}/api/lifecycle-common-allocation/upsert`, {
+                        method: "POST",
+                        headers: { "Content-Type": "application/json" },
+                        body: JSON.stringify({
+                            base_project_code: selectedProjectCode,
+                            allocation_mode: nextMode,
+                        }),
+                    });
+                    if (!res.ok) throw new Error("common allocation save failed");
+                    await res.json();
+                    const detailRes = await fetch(`${API_BASE}/api/project-detail?${detailQuery}`);
+                    if (detailRes.ok) {
+                        const nextDetail = await detailRes.json();
+                        setDetail(nextDetail);
+                    }
+                } catch (err) {
+                    setError("공통배분 기준 저장에 실패했습니다.");
+                } finally {
+                    setLifecycleCommonAllocationSaving(false);
+                }
+            }
+
             async function saveProjectMaster() {
                 if (!selectedProjectCode) return;
                 setSaving(true);
@@ -5182,6 +5211,19 @@
                                                 <div>
                                                     <div style={{ fontSize: 18, fontWeight: 700 }}>프로젝트 생애주기 원가</div>
                                                     <div className="subtle" style={{ marginTop: 6 }}>현재 시공 프로젝트를 포함해 연결된 전체 비용을 시공비, 인건비, 관리비로 나눠 봅니다.</div>
+                                                    <div style={{ display: "flex", alignItems: "center", gap: 8, marginTop: 10 }}>
+                                                        <span className="subtle">공통배분 기준</span>
+                                                        <select
+                                                            value={detail?.lifecycle_cost?.summary?.common_allocation_mode || "expense_ratio"}
+                                                            onChange={(e) => saveLifecycleCommonAllocationMode(e.target.value)}
+                                                            disabled={lifecycleCommonAllocationSaving}
+                                                            style={{ minWidth: 220 }}
+                                                        >
+                                                            <option value="expense_ratio">프로젝트 지출 / 전체지출 비율</option>
+                                                            <option value="income_ratio">프로젝트 입금 / 전체입금 비율</option>
+                                                        </select>
+                                                        <span className="subtle">{lifecycleCommonAllocationSaving ? "저장 중..." : ""}</span>
+                                                    </div>
                                                 </div>
                                                 <div style={{ display: "grid", gridTemplateColumns: "repeat(4, minmax(120px, 1fr))", gap: 24, minWidth: 560 }}>
                                                     <div>