v0.1.11

Added

• Helpers::Jitter module with deterministic_jitter and jitter_enabled? — prevents thundering herd when multiple nodes boot simultaneously
• Tick actor applies deterministic initial jitter before first execution (10% of interval, capped at 15 minutes)
• Jitter is per-task-name deterministic so all nodes handling the same task sleep the same offset
• Configurable via Legion::Settings[:tick][:jitter_enabled] (default: true)