Ctrl+V crashes with TypeError when clipboard contains non-text data (e.g. screenshot)

What version of Kimi Code CLI is running?

kimi, version 1.30.0

Which open platform/subscription were you using?

N/A (reproducible on any platform)

Which model were you using?

No response

What platform is your computer?

Darwin 25.2.0 arm64 arm

What issue are you seeing?

Pressing Ctrl+V crashes with a TypeError when the system clipboard holds non-text data (e.g. a screenshot). The
traceback points to prompt_toolkit internals doing "\n" in text where text is None because pyperclip.paste()
returned None.
Two distinct trigger paths lead to this crash:

1. Screenshot in clipboard + model doesn't support image input: _try_paste_media() detects the image, prints a
   warning, but returns False. The Ctrl+V handler then falls through to the text paste path, where pyperclip.paste()
   returns None → TypeError.
2. Any non-text clipboard content (covered by #1750): pyperclip.paste() returns None regardless of whether
   media detection ran, and prompt_toolkit's PyperclipClipboard.get_data() crashes on it.
   TypeError: argument of type 'NoneType' is not iterable

What steps can reproduce the bug?

1. Start kimi-cli with a model that does not support image input
2. Take a screenshot (so the clipboard holds an image)
3. Press Ctrl+V in the prompt

What is the expected behavior?

• If the model doesn't support images: show the "Image input is not supported" warning and do nothing else (no crash)
• If the clipboard simply has no text: silently ignore the paste (no crash)

Additional information

Related to #1750.
A fix is available at exqqstar/kimi-cli@e2230992
(branch:
fix/clipboard-crash-non-text-paste).
Will open a PR once this issue is confirmed.

Start at the Ctrl+V handler and _try_paste_media(), then inspect prompt_toolkit's PyperclipClipboard.get_data() and the pyperclip.paste() result. Reproduce with an image and other non-text clipboard contents; done means the unsupported-image warning remains without a crash and empty text paste is ignored.