Cannot paste clipboard images into the CLI prompt #864

Summary

Pasting an image from the system clipboard into the Command Code CLI prompt does not attach the image. This prevents me from sharing screenshots directly during a session.

Expected Behavior

When an image is copied to the system clipboard and pasted into the prompt, Command Code should attach it as an image and show that it is ready to send.

Actual Behavior

Pasting an image from the clipboard does not attach anything to the prompt. Dragging the same image from the file manager into Command Code works correctly.

Steps to reproduce the issue

1. Start Command Code with cmd.
2. Copy a screenshot or image to the system clipboard.
3. Focus the Command Code prompt.
4. Use the terminal paste shortcut.
5. Observe that no image is attached.

Command Code Version

1.54.1

Operating System

Linux

Terminal/IDE

Unknown

Shell

fish

Session file (optional)

No response

Fix prompt (optional)

Add clipboard image handling to the interactive prompt. Detect image clipboard data on paste, create an image attachment, and verify it works on Linux terminals without breaking normal text paste.

Additional context

Dragging an image file from the file manager into Command Code works correctly; only pasting image data directly from the clipboard fails. The issue reproduces in both Kitty and XFCE Terminal.

Command Code version: 1.54.1
OS: Linux
Shell: fish
Terminal/IDE: Kitty and XFCE Terminal