Tobi Ness credits a cheaper, off-brand GLP-1 drug with saving her life. But the company that sold it to her has a troubling record of safety violations. SEATTLE — Tobi Ness had tried everything. Weight Watchers. Calorie counting. Every diet that promised results. Nothing worked for the Tacoma woman, who spent her days as a general manager at a Pierce County Denny’s — surrounded by food from the moment she clocked in. “I would see a particular food item go out and I would think about those cheese sticks or that burger until I would eat it,” she said. At…