* ChatApp - Main application controller * Manages application state, coordinates UI components, and handles business logic.

* Network Logger Service * Tracks and stores network requests for debugging and monitoring

* Proxy Info Modal Component * Explains what the network proxy is and how it works

* SmoothProgress — requestAnimationFrame-based progress bar with trickle interpolation. * * Designed for use with innerHTML-replacing components. Af

* Custom error for token invalidation (e.g., after recovery on another device). * Callers should catch this and trigger re-authentication.