Update docs navigation

Author: dzekomiSICKAG

docs/index.html

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                 <h2><span class="icon">📘</span> TDC-E BaseOS</h2>
                 <p>Documentation for the current TDC-E firmware with gRPC HAL services, Docker support, and modern development tools.</p>
                 <span class="badge badge-current">Current Version</span>

docs/tdc-e-base/docs/index.md

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+---
+title: TDC-E BaseOS Developer Documentation
+---
+
+# TDC-E BaseOS Developer Documentation
+
+Welcome to the developer documentation for the SICK TDC-E device with BaseOS firmware. This documentation provides comprehensive guides, code samples, and API references for developing applications on the TDC-E platform.
+
+## 🚀 Getting Started
+
+Start here if you're new to TDC-E BaseOS development:
+
+- **[gRPC Usage](getting-started/grpc-usage)** - Connect to and communicate with your TDC-E device
+- **[Working with Docker](getting-started/working-with-docker)** - Deploy and manage containerized applications
+- **[Installing Applications](getting-started/installing-accessing-removing-applications)** - Application lifecycle management
+- **[Docker Authorization Policy](getting-started/docker-authorization-policy-scope)** - Security and permissions
+- **[Networking Configuration](getting-started/networking)** - Network setup and configuration
+
+## 📚 Code Samples by Interface
+
+Explore code examples for each hardware interface:
+
+- **[CAN Bus Examples](code-samples/can-examples)** - CAN communications and protocols
+- **[Digital I/O Examples](code-samples/dio-examples)** - Digital input/output operations
+- **[GNSS/GPS Examples](code-samples/gnss-examples)** - Position and navigation data
+- **[Serial Communication Examples](code-samples/tdce-serial-examples)** - RS232/RS422/RS485 interfaces
+- **[Analog Input Examples](code-samples/ain-examples)** - Analog signal reading
+- **[One-Wire Examples](code-samples/one-wire-examples)** - 1-Wire sensor interfaces
+- **[Temperature Sensor Examples](code-samples/temperature-sensor-examples)** - Temperature measurements
+- **[WPAN Examples](code-samples/wpan-examples)** - Wireless Personal Area Network
+- **[Networking Examples](code-samples/networking)** - Network configuration and management
+
+## ⚙️ AppEngine Documentation
+
+Learn about the AppEngine platform and Lua development:
+
+- **[AppEngine CROWN Documentation](app-engine-docs/app-engine-docs)** - Comprehensive AppEngine guide
+
+## 📖 Additional Resources
+
+- [GitHub Repository](https://github.com/SICKAG/sick_tdc-e-developers-documentation) - Source code and examples
+- [Legacy L4M Documentation](https://github.com/SICKAG/sick_tdc-e-developers-documentation/wiki) - For older TDC-E L4M firmware
+
+---
+
+**Need help?** Browse the sections above or visit the [GitHub repository](https://github.com/SICKAG/sick_tdc-e-developers-documentation) for more resources.