Feat: Proactive AI Assistant with Smart Alerts

## What would you like to be added?
An intelligent system that automatically triggers AI analysis and alerts based on log patterns, metrics, and events.

## Why is this needed?
To enhance user experience by making the AI assistant appear proactively in relevant contexts, providing instant insights when anomalies are detected. This includes smart thresholds based on historical data, contextual appearance, and non-intrusive notifications for various alert categories like resource usage, error patterns, and performance issues.


The issue names no files, tests, or entry points. First map where log patterns, metrics, events, AI analysis, and notifications are handled, then define acceptance criteria for historical thresholds, contextual alerts, and non-intrusive delivery before implementation.

Written by the indexing model from the issue text.