Repo cleanup:
- Move benchmark results and SVGs to bench/ and docs/ directories
- Remove top-level clutter (benchmark markdowns, wiki, SVGs)

New features:
- Add Google CLI provider (google_cli.rs) with Gemini API support
- Improve pipit init with richer profile templates
- Enhance pipit setup wizard with better UX
- Update install.sh with improved platform detection

TUI improvements:
- Refine tab layout and rendering in app.rs
- Better plugin and init CLI subcommands

Config:
- Extended config types and model routing options
- Provider library updates for Anthropic and OpenAI