Added 6 timing constants: - ShutdownNotifyDelay (500ms) - ClaudeStartTimeout (15s) - ShellReadyTimeout (5s) - DefaultDebounceMs (100) - DefaultDisplayMs (5000) - PollInterval (100ms) Updated 7 files to use these constants instead of magic numbers. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>