Background Processing Generator Generate production background processing infrastructure -- BGTaskScheduler for periodic refresh and long-running tasks, background URLSession for downloads/uploads that survive app termination, and silent push handling for server-triggered updates. When This Skill Activates Use this skill when the user: - Asks to "add background processing" or "background tasks" - Mentions "BGTaskScheduler" or "BGAppRefreshTask" or "BGProcessingTask" - Wants "background refresh" or "periodic background updates" - Asks about "background downloads" or "background uploads" - Ment…