feat(api): implement product caching mechanism

- Add NODE_ENV=production to .env for environment configuration
- Enhance product API route with JSON cache manager for local storage and retrieval
- Introduce cache-only mode and detailed logging for better performance and offline support
- Update UI to display cache status and storage statistics

app/api/storage-stats/route.ts

@@ -0,0 +1,48 @@
+import { NextResponse } from "next/server";
+import { jsonCacheManager } from "@/lib/jsonCacheManager";
+
+export async function GET() {
+  try {
+    console.log("[API] Iniciando busca de estatísticas do storage...");
+
+    // Verificar se o cache JSON está inicializado
+    const isInitialized = await jsonCacheManager.isInitialized();
+    if (!isInitialized) {
+      console.log("[API] Cache JSON não inicializado, retornando dados vazios");
+      return NextResponse.json({
+        success: true,
+        data: {
+          totalProducts: 0,
+          storageSizeMB: 0,
+          lastUpdated: 0,
+          averageProductSize: 0,
+        },
+        timestamp: Date.now(),
+      });
+    }
+
+    // Obter estatísticas do storage JSON
+    const stats = await jsonCacheManager.getStorageStats();
+    console.log("[API] Estatísticas obtidas:", stats);
+
+    return NextResponse.json({
+      success: true,
+      data: stats,
+      timestamp: Date.now(),
+    });
+  } catch (error) {
+    console.error("[API] Erro ao obter estatísticas do storage:", error);
+
+    // Retornar dados vazios em caso de erro para não quebrar o frontend
+    return NextResponse.json({
+      success: true,
+      data: {
+        totalProducts: 0,
+        storageSizeMB: 0,
+        lastUpdated: 0,
+        averageProductSize: 0,
+      },
+      timestamp: Date.now(),
+    });
+  }
+}