adding back mcp server

feat: update models to MiniMax M2.5 (fireworks-ai) and Opus 4.6

fix: inject OAuth token into MCP server headers at runtime

fix: use optional env var syntax for disabled MCP server config

chore: temporarily disable MCP server

feat: merge HF Space improvements

frontend update

added code panel, tool approval, tool calls logging

Simplify yolo_mode: use config instead of runtime variable

Merge configurable-permissions: add confirm_cpu_jobs, auto_file_upload, keep yolo mode

fixing logs

Add auto_file_upload and confirm_cpu_jobs config settings

session logging

moved config file + small fixes