chore: update dependencies and add OpenAPI support

- Added github.com/getkin/kin-openapi v0.130.0 to go.mod and updated go.sum for improved OpenAPI integration.
- Introduced DefaultOpenAPIUrl constant in config.go for easier configuration of OpenAPI URL.
- Implemented GetOpenAPIUrl function to retrieve the OpenAPI URL from configuration, enhancing flexibility in API documentation handling.

core/utils/config.go

@@ -36,6 +36,7 @@ const (
 	DefaultNodeModulesPath     = "/usr/lib/node_modules"
 	DefaultGoPath              = "/root/go"
 	DefaultMcpServerBaseUrl    = "http://localhost:9000/sse"
+	DefaultOpenAPIUrl          = "http://localhost:8000/openapi.json"
 )
 
 func IsDev() bool {
@@ -293,3 +294,10 @@ func GetMcpServerBaseUrl() string {
 	}
 	return DefaultMcpServerBaseUrl
 }
+
+func GetOpenAPIUrl() string {
+	if res := viper.GetString("openapi.url"); res != "" {
+		return res
+	}
+	return DefaultOpenAPIUrl
+}