Send the device's IANA timezone identifier (e.g., "America/Los_Angeles") with every API request to enable timezone-aware overdue task detection. Platform implementations: - Android/JVM: TimeZone.getDefault().id - iOS: NSTimeZone.localTimeZone.name - JS/WASM: Intl.DateTimeFormat().resolvedOptions().timeZone 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>