Added planning documents for future script reorganization:
NEW-SCRIPT-STRUCTURE.md:
- Outlines two-phase structure (Essential Setup vs Service Selection)
- Documents plan to move optional services to whiptail menu
- Plans for uninstall functionality
- Re-run detection improvements
SCRIPT-FLOW-INTRO.txt:
- Proposed intro text for users
- Explains Phase 1 (required) and Phase 2 (optional)
- Documents re-running behavior
These are planning documents for future enhancements.
Current commit only implements the duplicate prompt fix.
