Refactor/move demo to examples

[swhitt]

The demo logic is moved out of the main library into a dedicated example script, and project configuration is updated to better handle the new structure and examples.

[greptile-apps]

Greptile Overview

Greptile Summary

This PR successfully refactors the demo implementation by moving it from the main library file (lib/clack.rb) into a dedicated example script (examples/demo.rb). The changes improve code organization by separating example code from the core library, making the codebase more maintainable.

Key changes:

• Extracted 165+ lines of demo code from lib/clack.rb into examples/demo.rb
• Updated Clack.demo method to dynamically load and execute the demo script
• Consistently uses Clack.handle_cancel instead of Clack.cancel? throughout the demo for better error handling
• Configured build tools (Reek, Lefthook) to exclude the examples/ directory from code quality checks
• Updated gemspec to package example files with the gem distribution

The refactoring maintains backward compatibility - the Clack.demo method and clack-demo executable continue to work as before.

Confidence Score: 5/5

• This PR is safe to merge with no issues identified
• The refactoring is clean and well-executed. The demo code was moved without functional changes (only improved cancel handling). All configuration files were properly updated to handle the new structure. The changes maintain backward compatibility and improve code organization.
• No files require special attention

Important Files Changed

Filename	Overview
clack.gemspec	Added examples/**/* to packaged files so examples are distributed with the gem
lib/clack.rb	Refactored demo method to load implementation from examples/demo.rb instead of containing inline code
examples/demo.rb	Moved demo implementation from lib/clack.rb and consistently uses Clack.handle_cancel instead of Clack.cancel?

Sequence Diagram

sequenceDiagram
    participant User
    participant CLI as clack-demo (exe)
    participant Clack as Clack Module
    participant Demo as examples/demo.rb
    
    User->>CLI: Execute clack-demo
    CLI->>Clack: Clack.demo()
    Clack->>Clack: Resolve path to examples/demo.rb
    Clack->>Demo: load demo_path
    Demo->>Demo: Define run_demo()
    Clack->>Demo: Call run_demo()
    Demo->>Clack: Call various prompt methods
    Note over Demo,Clack: text, select, confirm, multiselect,<br/>autocomplete, select_key, path,<br/>group_multiselect, progress, tasks,<br/>spinner, log, note, outro
    Demo->>Demo: Check cancel with handle_cancel()
    Demo-->>User: Display interactive prompts
    User-->>Demo: Provide input
    Demo-->>User: Show results and summary

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[claude]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.