I want to build a simple mobile drawing app similar to MS Paint (Paint 98) using Flutter for Android and iOS. Requirements: - Excellent performance (native Flutter rendering only, NO WebView or HTML5) - Top bar, movable toolbar, and draggable color palette - Copy & paste from clipboard (image or text) - Multiple brush types (hard, soft, pixel, marker) - Undo/Redo (at least 20 steps) - Zoom and pan canvas with touch gestures - Save drawings as PNG or JPG - Two themes (Classic & Dark) and easy to add more later - Clean, modern UI with smooth animations - Code must be clean and well structured for future updates Tech stack: Flutter Target: Android & iOS Budget: $500–$1,000 Timeline: 3–4 weeks