Added 3-Mode Tutor architecture, Persistent Session Memory, and YOLOv8 Vision pipeline

Sub-agent with native grounding

final updates

high-priority call to the database (load_messages) to pull the absolute truth

table parser to include header support

Integrated health monitoring for all services

Offloaded persistence tasks to the background

robust performance tuning

double-firing of requests from UI blocked

agent tested with the prompt: Calculate 15 * 12 then add 50.