NN training: realistic persona data, graphs, hot-reload endpoint

Add life events, goals, pregnancy system; fix profile editor bugs

Fix quota runtime estimates: use RPM as bottleneck, sync top probability slider

Add quota-aware LLM switching: budget calculator, probability slider, Gemini/Groq support

Diversify agent activities, add local training script, scheduled Gemini cycle, architecture diagram

Add NN self-improvement pipeline: collect, train, push