fix: add go check to doctor

cmd/core/doctor/cmd_checks.go

@@ -26,6 +26,13 @@ func requiredChecks() []check {
 			args:        []string{"--version"},
 			versionFlag: "--version",
 		},
+		{
+			name:        i18n.T("cmd.doctor.check.go.name"),
+			description: i18n.T("cmd.doctor.check.go.description"),
+			command:     "go",
+			args:        []string{"version"},
+			versionFlag: "version",
+		},
 		{
 			name:        i18n.T("cmd.doctor.check.gh.name"),
 			description: i18n.T("cmd.doctor.check.gh.description"),

cmd/core/doctor/cmd_checks_test.go

@@ -0,0 +1,22 @@
+package doctor
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRequiredChecksIncludesGo(t *testing.T) {
+	checks := requiredChecks()
+
+	var found bool
+	for _, c := range checks {
+		if c.command == "go" {
+			found = true
+			assert.Equal(t, "version", c.versionFlag)
+			break
+		}
+	}
+
+	assert.True(t, found, "required checks should include the Go compiler")
+}

cmd/core/doctor/cmd_install.go

@@ -11,10 +11,12 @@ import (
 func printInstallInstructions() {
 	switch runtime.GOOS {
 	case "darwin":
+		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_macos_go"))
 		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_macos"))
 		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_macos_cask"))
 	case "linux":
 		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_linux_header"))
+		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_linux_go"))
 		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_linux_git"))
 		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_linux_gh"))
 		fmt.Printf("  %s\n", i18n.T("cmd.doctor.install_linux_php"))

pkg/cli/locales/en.json

@@ -12,7 +12,9 @@
 			"install_missing": "Install missing tools:",
 			"install_macos": "brew install",
 			"install_macos_cask": "brew install --cask",
+			"install_macos_go": "brew install go",
 			"install_linux_header": "Install on Linux:",
+			"install_linux_go": "sudo apt install golang-go",
 			"install_linux_git": "sudo apt install git",
 			"install_linux_node": "curl -fsSL https://deb.nodesource.com/setup_22.x | sudo -E bash - && sudo apt install -y nodejs",
 			"install_linux_php": "sudo apt install php php-cli php-mbstring php-xml php-curl",
@@ -30,6 +32,7 @@
 			"no_repos_yaml": "No repos.yaml found (run from workspace root)",
 			"check": {
 				"git": { "name": "Git", "description": "Version control" },
+				"go": { "name": "Go", "description": "Go compiler" },
 				"docker": { "name": "Docker", "description": "Container runtime" },
 				"node": { "name": "Node.js", "description": "JavaScript runtime" },
 				"php": { "name": "PHP", "description": "PHP interpreter" },