Enterprise release: add self-updates, command signing, and telemetry enhancements

executor.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"os"
+	"os/exec"
+)
+
+// Executor abstracts system operations to allow for easy mocking in tests.
+type Executor interface {
+	// Execute runs a system command and returns combined stdout/stderr.
+	Execute(command string, args ...string) ([]byte, error)
+
+	// WriteFile writes data to a file with specified permissions.
+	WriteFile(path string, data []byte, perm os.FileMode) error
+
+	// ReadFile reads the content of a file.
+	ReadFile(path string) ([]byte, error)
+}
+
+// SystemExecutor is the production implementation that performs real system calls.
+type SystemExecutor struct{}
+
+// Execute runs a real system command.
+func (s *SystemExecutor) Execute(command string, args ...string) ([]byte, error) {
+	cmd := exec.Command(command, args...)
+	return cmd.CombinedOutput()
+}
+
+// WriteFile performs a real file write.
+func (s *SystemExecutor) WriteFile(path string, data []byte, perm os.FileMode) error {
+	return os.WriteFile(path, data, perm)
+}
+
+// ReadFile performs a real file read.
+func (s *SystemExecutor) ReadFile(path string) ([]byte, error) {
+	return os.ReadFile(path)
+}