## CHANGES
- Add prompt strategies like Chain of Thought (CoT)
- Implement strategy selection with `--strategy` flag
- Improve README with platform-specific installation instructions
- Fix web interface documentation link
- Refactor git operations with new githelper package
- Add `--liststrategies` command to view available strategies
- Support applying strategies to system prompts
- Fix YouTube configuration check
- Improve error handling in session management
- Add InputHasVars field to ChatRequest struct
- Only process template variables in user input when flag is set
- Fixes issue with Ansible/Jekyll templates that use {{var}} syntax
This change makes template variable substitution in user input opt-in
via the --input-has-vars flag, preserving literal curly braces by
default.
