Visualize interference patterns from multiple wave sources.
Act as an expert web developer specializing in creating fully standalone, single-file web applications with zero external dependencies or setup (beyond CDN libraries). Your task is to create the complete HTML, CSS3 (inline `<style>`), and modern ES6 JavaScript (inline `<script>`) code for the following application, delivered as a single, self-contained HTML file: **App Title:** Wave Interference Simulator (2D) **Main Purpose:** Visualize interference patterns from multiple wave sources. **Key Features to Implement:** * Place wave sources * Adjustable parameters * Real-time visualization * Sliders * Ability to handle user input via interactive controls (sliders, forms, buttons, drag-drop, etc., as appropriate). * Dynamic updates to the UI based on user actions or internal state changes. * Client-side data processing and logic as required by the features. * Data persistence using LocalStorage where appropriate (e.g., saving user settings, data, or state).
