feat: add GetManPage function and integrate parent process name in ProcessDetail

app.go

@@ -56,3 +56,8 @@ func (a *App) GetProcessDetail(pid int32) (*backend.ProcessDetail, error) {
 func (a *App) KillProcess(pid int32, force bool) error {
 	return backend.KillProcess(pid, force)
 }
+
+// GetManPage returns the plain-text manual page for the given command.
+func (a *App) GetManPage(name string) string {
+	return backend.GetManPage(name)
+}