v2.16.0

What's New

AI Statistics Improvements

• Show estimated token counts alongside cost with ~ prefix
• Monthly navigation (back/forward, up to 6 months history)
• CLI-based estimates marked with (estimated) label and info disclaimer
• Single-pass data aggregation for better performance
• Missing operation labels added (folder-relation, semantic-link-context)

Code Quality

• Replace all DispatchQueue.global with Task.detached for process timeouts
• Extract shared ShellEnvironment.scheduleTermination(of:after:) helper
• Proper timeout task cancellation on normal process exit
• Deduplicated Date.relativeFormatted extension