feat(backend): enrich portfolio list with MOEX batch data

apps/backend/src/modules/portfolio/portfolio.service.ts

@@ -60,10 +60,55 @@ export class PortfolioService {
   }
 
   async findAll(userId: number) {
-    return this.prisma.portfolio.findMany({
+    const portfolios = await this.prisma.portfolio.findMany({
       where: { userId },
+      include: { positions: true },
       orderBy: { updatedAt: 'desc' },
     });
+
+    const allPositions = portfolios.flatMap((p) => p.positions);
+    if (allPositions.length === 0) {
+      return portfolios.map((p) => ({
+        id: p.id,
+        name: p.name,
+        description: p.description,
+        currency: p.currency,
+        createdAt: p.createdAt.toISOString(),
+        updatedAt: p.updatedAt.toISOString(),
+        totalValue: 0,
+        positionCount: 0,
+        shareCount: 0,
+        bondCount: 0,
+      }));
+    }
+
+    const enrichedPositions = await this.enrichPositions(allPositions);
+
+    const posByPortfolioId = new Map<number, (typeof enrichedPositions)[number][]>();
+    for (let i = 0; i < enrichedPositions.length; i++) {
+      const pfId = allPositions[i].portfolioId;
+      if (!posByPortfolioId.has(pfId)) {
+        posByPortfolioId.set(pfId, []);
+      }
+      posByPortfolioId.get(pfId)!.push(enrichedPositions[i]);
+    }
+
+    return portfolios.map((p) => {
+      const positions = posByPortfolioId.get(p.id) ?? [];
+      const totalValue = positions.reduce((sum, pos) => sum + (pos.currentValue ?? 0), 0);
+      return {
+        id: p.id,
+        name: p.name,
+        description: p.description,
+        currency: p.currency,
+        createdAt: p.createdAt.toISOString(),
+        updatedAt: p.updatedAt.toISOString(),
+        totalValue: Math.round(totalValue * 100) / 100,
+        positionCount: positions.length,
+        shareCount: positions.filter((pos) => pos.type === 'share').length,
+        bondCount: positions.filter((pos) => pos.type === 'bond').length,
+      };
+    });
   }
 
   async findOne(userId: number, id: number) {