feat(ai): Implement AI-assisted code generation capabilities

BREAKING CHANGE: This PR introduces a major new feature set that significantly expands CodeWhisper's capabilities, transforming it from a documentation-focused tool to a powerful AI-driven coding assistant. Due to the extensive changes and new dependencies, this update requires a major version bump.

AI-Assisted Code Generation in CodeWhisper

This PR introduces advanced AI-assisted code generation capabilities to CodeWhisper, marking a significant evolution in its functionality. The new features enable users to leverage AI for task planning, code generation, and implementation, all seamlessly integrated with CodeWhisper's existing strengths in documentation and file handling.

Key Features

AI-Driven Task Workflow:
- New task command in CLI for initiating AI-assisted coding tasks
- Interactive task description input using a multi-line editor
- AI-generated implementation plans with user review and editing capabilities
- AI-powered code generation based on approved plans
Enhanced File Handling:
- Utilization of CodeWhisper's existing file selection mechanism for providing context to AI
- Improved file processing with support for various file types and comment handling
Git Integration:
- Automatic creation of new git branches for AI-generated changes
- Smart branch naming to avoid conflicts
- Option to automatically commit changes or review before committing
AI Model Flexibility:
- Support for multiple AI models, including various Claude and GPT (nyi) models
- Configurable model selection for different tasks
Cost Management:
- Token usage estimation and cost calculation for AI operations
- Customizable cost thresholds to prevent unexpected expenses
Dry Run Capability:
- Option to preview AI-generated changes without applying them to the codebase
- Option to apply the previewed changes generated by a dry run
Enhanced Logging and Error Handling:
- Comprehensive logging system using Winston for better debugging and monitoring
- Improved error handling throughout the AI-assisted workflow

Technical Enhancements

Integration with Vercel's AI SDK for interaction with Claude AI models
New modules for AI interaction, prompt engineering, and code generation
Expanded TypeScript type definitions for improved type safety
Enhanced template system for AI prompts using Handlebars

User Experience Improvements

Seamless integration of AI features with existing CodeWhisper CLI interface
Interactive prompts for task description and plan review
Detailed output of AI-generated plans and code changes
Cost estimation and reporting for transparency

Breaking Changes

New dependencies added for AI functionality and git operations
Changes to the CLI interface with the addition of the task command
Potential changes in behavior for existing file processing functions due to enhancements

Migration Guide

Users upgrading to this version should:

Review the updated documentation for new AI-assisted features
Ensure all new dependencies are properly installed
Update any scripts or workflows that rely on CodeWhisper's CLI to accommodate the new task command
Be aware of potential changes in file processing behavior and test existing workflows

Future Work

Update documentation
More comprehensive tests
OpenAI model support is prepared but not finalized yet
Further refinement of user experience based on feedback
Performance optimizations for large-scale codebases
Integration with issue tracking systems on GitHub / Gitlab, ...
Integration with PRs on GitHub / Gitlab

This major update positions CodeWhisper as a versatile tool for both documentation and AI-assisted code development, significantly expanding its utility for developers and teams.

gmickel / CodeWhisper

feat(ai): Implement AI-assisted code generation capabilities #24