🔧 Fix sample data loader to support window KG files for Replay button

add

🗑️ Remove Simple Q&A Demonstration - Keep Only Comprehensive Example

Extend Sample Traces for Realistic AI Assistant Interactions - Multi-step RAG workflow with 4 observations, extended educational conversations, enhanced knowledge graph interactions, and production-quality AI assistant demonstrations

🔧 Remove Remaining Oxford Economics References

🔄 Replace Oxford Economics with Python Documentation Use Case

🔧 Optimize Tool Definition: RAG Search vs Language Model

add

🚀 Major Sample Data Enhancement: Complex Multi-Agent Scenarios

🚀 Enhanced Sample Data: Complete AgentGraph Feature Showcase

🎨 Complete Sample Data Structure Overhaul

🔧 Fix Sample Knowledge Graphs Display Issue

🔧 Fix Sample Data Insertion Import Error

🎯 Add Automatic Sample Data System for New Users