Updated TimelineControls to skip loading default segments when no saved segments are found, relying on useVideoTrimmer to create the initial segment. This simplifies the logic and avoids redundant segment creation.
Audio poster image is now imported as a module and referenced via AUDIO_POSTER_URL in both chapters-editor and video-editor players. Removed custom file copy plugin from Vite config, updated asset handling to use Vite's asset import and output options, and added type declarations for image modules.
Introduces an audio-poster.jpg image and updates both chapters and video editor React video player components to display a poster image for audio files when no poster is provided. Also adds a posterUrl field to MEDIA_DATA and ensures fallback logic for poster images is consistent across iOS and standard video players.
