Build a native mobile app for AI video generation. The app should be designed for simplicity and direct use. Core functionality requirements: 1. **Main Generation Screen:** This will be the primary screen of the app. It should feature: * A toggle or tabs to select between two modes: "Text-to-Video" and "Image-to-Video". * A text input field for users to write their video description prompt. * An "Upload Image" button that allows users to select an image from their device's gallery. This is used for the "Image-to-Video" mode. * A prominent "Generate Video" button. 2. **Video Generation Flow:** * Upon tapping "Generate Video", the app should display a loading state to indicate that the video is being processed. This could be a progress bar or a simple animation. * The app will interface with a hypothetical external API (like Google Veo 3) for the video and audio generation. You can simulate this with a placeholder function that returns a sample video and audio file after a delay. * Crucially, every video generation request must also request and include a relevant, AI-generated audio track. 3. **Results Screen:** * After generation is complete, the app should navigate to a results screen. * This screen will display the generated video in a player with standard controls (play, pause, scrub). The audio should play automatically with the video. * Below the video player, include two buttons: "Save to Device" and "Share". 4. **App Architecture:** * Build this as a native app using React Native. * Ensure the UI is clean, modern, and intuitive. * No user accounts, login, or authentication is required. All functionality should be accessible immediately upon opening the app. * There should be no system for tracking usage, credits, or implementing paywalls. Use is unlimited.

Build a native mobile app for AI video generation. The app should be designed for simplicity and direct use. Core functionality requirements: 1. **Main Generation Screen:** This will be the primary...