Fix thread-safety: use cwd parameter in Popen instead of os.chdir()

Fix concurrent conversation race condition using contextvars

Fix SHA256 hash mismatch by adding ensure_ascii=False to sign_data

Clarify Google LLM thinking: reasoning_effort controls depth but thoughts not exposed via OpenAI API

Add Together.ai Qwen, GLM, and Kimi models to preconfigured LLM CSV

Update DeepSeek context lengths in preconfigured LLM CSV

Add latest Mistral models to preconfigured LLM CSV

Add latest Google models to preconfigured LLM CSV

Add latest Anthropic models to preconfigured LLM CSV

Add latest OpenAI models to preconfigured LLM CSV

Add forward slash to LLM route regex for Together-ai and Groq model names

Add playwright dependency for browser automation

Add ddgs package for DuckDuckGo search

Security: Update fastmcp 2.10.1→3.1.0 and fix websockets 16.0 compatibility

Security: Update deepdiff 6.3.1→8.6.1 and pycryptodome 3.18.0→3.23.0