Fix langchain imports: use langchain.memory for ConversationBufferWindowMemory, use langchain_core.tools for BaseTool (langchain 0.3.27 compatibility)

Fix: Resolve all import errors and dependency issues

fix: Clean LLM responses and fix variable scope errors

feat: Replace CoinGecko with CryptoCompare/Etherscan APIs

fix: Improve session cleanup and management

fix: Add missing validate_gemini_response method and cleanup method

new

feat: Add Gemini/Ollama toggle functionality with API error fixes

project complete

final commit with chart generation

feat: more features

Add comprehensive logging and debug endpoints for tool calling

fix: etherscan_tool error fix

feat: testing done

feat: added api tools