Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-grok-pager/npm/grok/README.md

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+# Grok
+
+Bring Grok into your terminal. Fast, flicker-free CLI built for plans, subagents, and parallel work.
+
+**[Homepage](https://x.ai/cli)** | **[Documentation](https://docs.x.ai/build/overview)**
+
+## Install
+
+```bash
+curl -fsSL https://x.ai/cli/install.sh | bash
+```
+
+Or install with npm:
+
+```bash
+npm i -g @xai-official/grok
+```
+
+## Get Started
+
+```bash
+# Launch the interactive TUI
+grok
+
+# Run a single task
+grok -p "Explain this codebase"
+```
+
+On first launch, Grok opens your browser to authenticate. For CI or headless environments, use an API key from [console.x.ai](https://console.x.ai):
+
+```bash
+export XAI_API_KEY="xai-..."
+```
+
+## Update
+
+```bash
+grok update
+```
+
+Or if installed via npm:
+
+```bash
+npm i -g @xai-official/grok@latest
+```
+
+## Supported Platforms
+
+| Platform | Architecture |
+|---|---|
+| macOS | Apple Silicon (arm64) |
+| Linux | x86_64, arm64 |
+| Windows | x86_64 |
+
+## Documentation
+
+For full documentation including configuration, MCP servers, custom models, headless mode, agent mode, and more, visit [docs.x.ai/build/overview](https://docs.x.ai/build/overview).
+
+## Feedback
+
+Run `/feedback` inside Grok to report issues or send feedback directly.