Support inline images/gifs in terminal output

Feature Request

It would be great if Claude Code could display inline images or gifs in terminals that support it (iTerm2, Kitty, WezTerm, Ghostty) during long-running operations like model downloads, builds, or test suites.

Use case

When waiting for a multi-minute background task (e.g., downloading a 18GB model), a fun "now we dance" gif or relevant image would make the experience more engaging than dry status text.

Technical feasibility

Several terminal emulators already support inline image display:

• iTerm2: Inline Images Protocol
• Kitty: Graphics Protocol
• WezTerm: Supports iTerm2 inline image protocol
• Ghostty: Image support

Detection of terminal capabilities could gate the feature so it only activates in supported terminals.

Suggested behavior

• Detect terminal image capability at startup
• Allow Claude to display images inline (useful for image generation results, plots, screenshots, etc.)
• Optionally show fun waiting animations during long background tasks
• Could also be useful for showing diff visualizations, architecture diagrams, etc.