Fix lib versions so the app will run

.claude/settings.local.json

@@ -0,0 +1,8 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(ls:*)"
+    ],
+    "deny": []
+  }
+}

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 a Flask web application that demonstrates OAuth 2.0 authentication with the Xero API. It serves as a companion app showing how to connect to Xero organizations and make real API calls to various Xero endpoints.
+
+## Development Environment Setup
+
+### Prerequisites
+- Python 3.5+
+- Git
+- SSH keys configured for GitHub access (required for Flask-Session dependency)
+
+### Local Development Commands
+```bash
+# Create and activate virtual environment
+python3 -m venv venv
+source venv/bin/activate
+
+# Install dependencies
+pip install -r requirements.txt
+
+# Run the main application
+python3 app.py
+
+# Application will be available at http://localhost:5000/login
+```
+
+## Configuration
+
+The application requires a `config.py` file in the root directory with Xero API credentials:
+```python
+CLIENT_ID = "...client id string..."
+CLIENT_SECRET = "...client secret string..."
+STATE = "...my super secure state..."
+```
+
+Use `example_config.py` as a template. The STATE field cannot be empty.
+
+## Architecture
+
+### Core Files
+- `app.py`: Main Flask application with OAuth2 flow and API demonstrations
+- `app2.py`: Additional utility functions for bank transaction matching
+- `utils.py`: JSON serialization utilities and custom encoders for Xero Python SDK models
+- `default_settings.py`: Flask configuration for development environment
+- `logging_settings.py`: Logging configuration for debugging API calls
+
+### Key Components
+- **OAuth2 Flow**: Implemented using flask-oauthlib with token persistence via flask-session
+- **Token Management**: Automatic refresh of expired access tokens
+- **API Client**: Xero Python SDK v6.1.0 with comprehensive API coverage
+- **Session Storage**: File-based session storage in `cache/` directory
+
+### Xero API Integration
+The app demonstrates integration with multiple Xero APIs:
+- Accounting API (invoices, contacts, organizations)
+- Assets API
+- Project API  
+- Payroll APIs (AU, UK, NZ)
+- Files API
+- Finance API
+
+Token exchange between flask-oauthlib and xero-python SDK is handled by decorator functions that persist tokens in Flask sessions.
+
+## Testing with Demo Company
+Always use Xero's Demo Company for testing to avoid affecting real data. The application includes functionality to connect to organizations and perform various API operations safely in the demo environment.