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AGENTS.md

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CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+This is **jupyter_ai_jupyternaut**, a JupyterLab extension that provides the default AI persona "Jupyternaut" for Jupyter AI. It consists of:
+
+- **Python package**: `jupyter_ai_jupyternaut` (server extension)
+- **NPM package**: `@jupyter-ai/jupyternaut` (frontend extension)
+- **Entry point**: Provides the Jupyternaut persona via the `jupyter_ai.personas` entry point
+
+## Development Commands
+
+### Setup
+```bash
+micromamba install uv jupyterlab nodejs=22
+jlpm
+jlpm dev:install
+```
+
+### Build Commands
+- `jlpm build` - Build TypeScript sources with source maps
+- `jlpm build:prod` - Production build (clean + lib + labextension)
+- `jlpm build:lib` - Build TypeScript library only
+- `jlpm build:labextension` - Build JupyterLab extension
+
+### Development
+- `jlpm watch` - Watch source files and auto-rebuild
+- `jlpm dev:install` - Full development installation
+- `jlpm dev:uninstall` - Remove development installation
+
+### Testing
+- **Frontend**: `jlpm test` (Jest)
+- **Backend**: `pytest -vv -r ap --cov jupyter_ai_jupyternaut`
+- **UI Tests**: See `ui-tests/README.md` (Playwright/Galata)
+
+### Code Quality
+- `jlpm lint` - Run all linters (stylelint + prettier + eslint)
+- `jlpm lint:check` - Check without fixing
+- Individual tools: `jlpm eslint`, `jlpm prettier`, `jlpm stylelint`
+
+### Clean Commands
+- `jlpm clean` - Clean lib directory
+- `jlpm clean:all` - Clean everything including labextension
+
+## Architecture
+
+### Core Components
+
+1. **JupyternautPersona** (`jupyter_ai_jupyternaut/jupyternaut/jupyternaut.py`):
+   - Main persona class extending `BasePersona`
+   - Handles chat model configuration and message processing
+   - Integrates with `litellm` for LLM completions
+   - Manages conversation history and context
+
+2. **Frontend Plugins** (`src/index.ts`):
+   - Main plugin: Basic extension activation
+   - Settings plugin: AI configuration interface
+   - Stop button plugin: Message interaction controls
+   - Status plugin: Extension status management
+
+3. **Configuration System**:
+   - Uses `jupyter_ai_persona_manager` for persona management
+   - Chat model configuration via settings UI
+   - Server-side config management and REST APIs
+
+### Key Dependencies
+
+- **Backend**: `jupyter_server`, `pydantic>=2.10.0`, `litellm>=1.73`, `jupyterlab-chat>=0.17.0`
+- **Frontend**: `@jupyter/chat`, `@mui/material`, `@emotion/react`, JupyterLab 4.x
+
+### File Structure
+- `jupyter_ai_jupyternaut/` - Python package (server extension)
+  - `jupyternaut/` - Core persona implementation
+  - `config/` - Configuration management
+  - `models/` - REST API models
+  - `secrets/` - Secret management
+- `src/` - TypeScript source (frontend extension)
+- `lib/` - Compiled JavaScript output
+- `style/` - CSS styling
+
+### Development Notes
+
+- Extension follows JupyterLab 4.x plugin architecture
+- Uses `hatch` for Python packaging and `jlpm` (yarn) for Node.js
+- Frontend built with React/TypeScript and Material-UI
+- Backend provides REST APIs for configuration and model management
+- Entry point registration allows automatic persona discovery by Jupyter AI
+
+### Code Style
+- TypeScript: ESLint with Prettier, single quotes, no trailing commas
+- Python: Standard formatting (details in pyproject.toml)
+- Interface naming: Must start with `I` and use PascalCase
+- CSS: Stylelint with standard config