Removed numerous local image and document files from content posts and updated markdown files to reference external image and document URLs instead. This reduces repository size and centralizes media hosting, improving maintainability.

Added a new post for 2025-08-20 featuring curated ByteByteGo images and related video links. Also updated the previous day's post to change a YouTube video from an image to a link.

Added a new post featuring a large collection of ByteByteGo images and a video link in content/post/2025/08/19. All referenced images were added to the img/ directory for this post.