feat: implement hgctl agent & mcp add subcommand (#3051)

hgctl/pkg/agent/core.go

@@ -0,0 +1,46 @@
+// Copyright (c) 2025 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package agent
+
+import (
+	"os"
+	"os/exec"
+)
+
+type AgenticCore struct {
+}
+
+func NewAgenticCore() *AgenticCore {
+	return &AgenticCore{}
+}
+
+func (c *AgenticCore) run(args ...string) error {
+	cmd := exec.Command(AgentBinaryName, args...)
+	cmd.Stdin = os.Stdin
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+
+}
+
+// ------- Initialization  -------
+func (c *AgenticCore) Start() error {
+	return c.run(AgentBinaryName)
+}
+
+// ------- MCP  -------
+func (c *AgenticCore) AddMCPServer(name string, url string) error {
+	return c.run("mcp", "add", "--transport", HTTP, name, url)
+}