feat: add MCP marketplace and custom scrollbar styles

Add comprehensive CSS styles for the MCP Marketplace interface, including card hover effects, responsive grid layout, modal backdrop blur, category badges, rating stars, install buttons, and loading animations. Also include custom scrollbar styling for the model selector to enhance user experience and visual consistency.

app/api/mcp/install/route.ts

@@ -0,0 +1,62 @@
+import { NextResponse } from "next/server";
+import { MCPInstallationStatus } from "@/lib/types/mcp";
+import { DeepNLPService } from "@/lib/services/deepnlp";
+import { MCPRepository } from "@/database/repositories/mcp";
+
+export async function POST(request: Request) {
+  try {
+    const { mcpId } = await request.json();
+
+    if (!mcpId) {
+      return NextResponse.json(
+        { success: false, error: "MCP ID is required" },
+        { status: 400 }
+      );
+    }
+
+    console.log(`Installing MCP: ${mcpId}`);
+
+    // Verificar se já está instalado
+    if (MCPRepository.isInstalled(mcpId)) {
+      return NextResponse.json({
+        success: false,
+        error: `MCP ${mcpId} is already installed`,
+      }, { status: 400 });
+    }
+
+    // Obter configuração completa do servidor
+    console.log(`Fetching server config for ${mcpId}`);
+    const serverConfig = await DeepNLPService.getServerConfig(mcpId);
+    
+    if (!serverConfig.items || serverConfig.items.length === 0) {
+      throw new Error(`No configuration found for MCP ${mcpId}`);
+    }
+
+    // Obter ferramentas disponíveis
+    console.log(`Fetching server tools for ${mcpId}`);
+    const tools = await DeepNLPService.getServerTools(mcpId);
+
+    // Salvar configuração localmente
+    console.log(`Saving MCP ${mcpId} to local database`);
+    MCPRepository.saveInstallation(mcpId, serverConfig.items[0], tools);
+
+    const result: MCPInstallationStatus = {
+      success: true,
+      message: `MCP ${mcpId} installed successfully`,
+      mcpId,
+    };
+
+    return NextResponse.json({
+      success: true,
+      installation: result,
+      config: serverConfig.items[0],
+      tools: tools,
+    });
+  } catch (error: any) {
+    console.error("Error installing MCP:", error);
+    return NextResponse.json(
+      { success: false, error: error.message || "Failed to install MCP" },
+      { status: 500 }
+    );
+  }
+}