feat: 3-section dashboard, reference dual-monitor layout, and detail dock

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/scripts/migrate-sections.ts

@@ -0,0 +1,66 @@
+/**
+ * 전산관리·운영지원 → 운영관리 부문 통합 (1회 실행)
+ * 사용: npm run db:migrate-sections
+ */
+import 'dotenv/config';
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient();
+
+const MERGE_INTO = '운영관리';
+const FROM = ['전산관리', '운영지원'] as const;
+
+async function mergeCardOrder(intoKey: string, fromKeys: readonly string[]) {
+  const target = await prisma.columnConfig.findUnique({ where: { key: intoKey } });
+  const orders: string[] = [];
+  if (target?.cardOrder) {
+    try {
+      orders.push(...JSON.parse(target.cardOrder));
+    } catch {
+      /* ignore */
+    }
+  }
+  for (const from of fromKeys) {
+    const src = await prisma.columnConfig.findUnique({ where: { key: from } });
+    if (!src?.cardOrder) continue;
+    try {
+      const ids = JSON.parse(src.cardOrder) as string[];
+      for (const id of ids) {
+        if (!orders.includes(id)) orders.push(id);
+      }
+    } catch {
+      /* ignore */
+    }
+  }
+  if (orders.length === 0 && !target) return;
+  await prisma.columnConfig.upsert({
+    where: { key: intoKey },
+    update: { cardOrder: JSON.stringify(orders) },
+    create: {
+      key: intoKey,
+      title: '운영관리',
+      titleEn: 'GA',
+      subtitle: '',
+      cardOrder: JSON.stringify(orders),
+    },
+  });
+}
+
+async function main() {
+  for (const from of FROM) {
+    const { count } = await prisma.task.updateMany({
+      where: { section: from },
+      data: { section: MERGE_INTO },
+    });
+    if (count > 0) console.log(`  ✓ ${from} → ${MERGE_INTO}: ${count} tasks`);
+  }
+  await mergeCardOrder(MERGE_INTO, FROM);
+  console.log('✅ Section migration done.');
+}
+
+main()
+  .catch((e) => {
+    console.error(e);
+    process.exit(1);
+  })
+  .finally(() => prisma.$disconnect());