Implemented automatic addition of "// Last modified: [timestamp]" headers across command and internal files for better tracking. Updated prompts in agent and edit commands to enforce header format. Added logic to prepend header if missing in generated content. Fixed minor issues like missing newlines at end of files.
Introduce new `agent` command that scans .go files in the project, generates an AI-driven plan for changes based on user instruction, and applies edits with previews and backups. Includes integration with Grok client for planning and content generation.
Update existing files with timestamp comments as part of the agent's editing demonstration. Add agentCmd to root command.
- Replace basic CLI chat with Bubble Tea-based TUI featuring viewport, textarea, colored history, and streaming replies.
- Add StreamSilent method to client for TUI integration without live printing.
- Introduce model flag for chat command.
- Update dependencies to include charmbracelet libraries.
- Introduce config.Load() to handle centralized configuration loading in TOML format
- Add --model flag support across commands with alias resolution via GetModel
- Update root command to load config in PersistentPreRun
- Remove redundant config init and set defaults for model and temperature
