feat(mcp): add GitHub repo support and tools display in MCP cards

- Support installing MCP servers from GitHub repos by converting 'github:user/repo' to 'git+https://github.com/user/repo.git' to avoid SSH issues and improve npm compatibility
- Display available tools in MCPCard with badges, showing up to 6 tools and total count for better visibility of server capabilities
- Remove unused onViewDetails prop and make uninstall button full-width for improved UI consistency

lib/services/mcp-installer.ts

@@ -170,11 +170,12 @@ export class MCPInstallerService {
       });
 
       // Construir ambiente
+      // Para NPM, executar npx do diretório onde foi instalado (não usa --prefix que não funciona)
       const environment: MCPEnvironment = {
         type: "npm",
         path: npmDir,
         executable: "npx",
-        args: ["--prefix", npmDir, packageName],
+        args: [packageName],
       };
 
       return environment;