Images can display in iTerm2 in fullscreen mode

What

Claude Code could already draw pictures in terminals that support the kitty graphics method. It now also supports iTerm2's inline image method.

• A new itermImages terminal capability, off by default, is on only when the terminal identifies itself as iTerm2 3.5.0 or later.
• It is off inside tmux or screen and in background-worker sessions, separate from the existing CLAUDE_CODE_FORCE_TERMINAL_IMAGES check.
• iTerm2 images are disabled in scroll-region mode, in the classic renderer, and when CLAUDE_CODE_ALT_SCREEN_FULL_REPAINT is set, because every frame would resend the picture.
• In the fullscreen renderer, images are placed on each frame after the screen update.
• They need PNG or raw pixel bytes; an image from a file or shared memory falls back to text, which now says the terminal draws neither kitty placeholder images nor iTerm2 inline images.

Why

If you use a recent iTerm2 with fullscreen mode, images such as those drawn by plugins can now appear instead of placeholder text.