IDE Onboarding Experience

A comprehensive onboarding screen has been added for first-time users installing Claude Code in their IDE. This feature:

• Automatic Display: Shows automatically when Claude Code is installed in an IDE for the first time
• Per-Terminal Tracking: Tracks whether onboarding has been shown for each terminal type (VSCode, IntelliJ, etc.)
• Quick Start Guide: Displays essential keyboard shortcuts and usage tips:
• Cmd+Esc to launch Claude Code
• Cmd+Option+K (Mac) or Ctrl+Alt+K (Windows/Linux) to insert @File references
• View and apply file diffs directly in your editor
• Version Display: Shows the installed version of Claude Code
• Restart Reminder: For plugin installations, reminds users to restart their IDE (may require multiple restarts)
• Exit Options: Press the designated key again to exit the onboarding screen