Implement LLM provider configuration and update user settings

- Added functionality to update the default LLM provider for users via a new endpoint in UserController.
- Introduced LlmProvider enum to manage available LLM options: Auto, Gemini, OpenAI, and Claude.
- Updated User and UserEntity models to include DefaultLlmProvider property.
- Enhanced database context and migrations to support the new LLM provider configuration.
- Integrated LLM services into the application bootstrap for dependency injection.
- Updated TypeScript API client to include methods for managing LLM providers and chat requests.

assets/documentation/README.md

@@ -0,0 +1,68 @@
+# Managing Apps Documentation
+
+This directory contains technical documentation for the Managing trading platform.
+
+## Architecture & Design
+
+- **[MCP Architecture](MCP-Architecture.md)** - Model Context Protocol architecture, dual-MCP approach (C# internal + Node.js community)
+- **[Architecture Diagram](Architecture.drawio)** - Overall system architecture (Draw.io format)
+- **[Monorepo Structure](Workers%20processing/07-Monorepo-Structure.md)** - Project organization and structure
+
+## Upgrade Plans
+
+- **[.NET 10 Upgrade Plan](NET10-Upgrade-Plan.md)** - Detailed .NET 10 upgrade specification
+- **[.NET 10 Upgrade Quick Reference](README-Upgrade-Plan.md)** - Quick overview of upgrade plan
+
+## Workers & Processing
+
+- **[Workers Processing Overview](Workers%20processing/README.md)** - Background workers documentation index
+- **[Overall Architecture](Workers%20processing/01-Overall-Architecture.md)** - Worker architecture overview
+- **[Request Flow](Workers%20processing/02-Request-Flow.md)** - Request processing flow
+- **[Job Processing Flow](Workers%20processing/03-Job-Processing-Flow.md)** - Job processing details
+- **[Database Schema](Workers%20processing/04-Database-Schema.md)** - Worker database schema
+- **[Deployment Architecture](Workers%20processing/05-Deployment-Architecture.md)** - Deployment setup
+- **[Concurrency Control](Workers%20processing/06-Concurrency-Control.md)** - Concurrency handling
+- **[Implementation Plan](Workers%20processing/IMPLEMENTATION-PLAN.md)** - Worker implementation details
+
+## Workflows
+
+- **[Position Workflow](PositionWorkflow.md)** - Trading position workflow
+- **[Delta Neutral Worker](DeltaNeutralWorker.md)** - Delta neutral trading worker
+
+## Other
+
+- **[End Game](EndGame.md)** - End game strategy documentation
+
+## Quick Links
+
+### For Developers
+- Start with [Architecture Diagram](Architecture.drawio) for system overview
+- Review [MCP Architecture](MCP-Architecture.md) for LLM integration
+- Check [Workers Processing](Workers%20processing/README.md) for background jobs
+
+### For DevOps
+- See [Deployment Architecture](Workers%20processing/05-Deployment-Architecture.md)
+- Review [.NET 10 Upgrade Plan](NET10-Upgrade-Plan.md) for framework updates
+
+### For Product/Planning
+- Review [MCP Architecture](MCP-Architecture.md) for community features
+- Check [Workers Processing](Workers%20processing/README.md) for system capabilities
+
+## Document Status
+
+| Document | Status | Last Updated |
+|----------|--------|--------------|
+| MCP Architecture | Planning | 2025-01-XX |
+| .NET 10 Upgrade Plan | Planning | 2024-11-24 |
+| Workers Processing | Active | Various |
+| Architecture Diagram | Active | Various |
+
+## Contributing
+
+When adding new documentation:
+1. Use Markdown format (`.md`)
+2. Follow existing structure and style
+3. Update this README with links
+4. Add appropriate cross-references
+5. Include diagrams in Draw.io format when needed
+