WESLEY LANGAT PETER Njeru used to live in central Nairobi's rundown Michuki Memorial Park because he had nowhere else to go. Now the 28-year-old is restoring and guarding the green space, one of about 200 jobless former park residents hired to help with the work. "This park was my home with other street families, though people were dumping here illegally," he said, noting that he used to collect and sell plastic bottles and metal scraps to buy food. But after being evicted in 2017, he was hired for a few months to help clear trash in the park - and…