Image paste (Ctrl+V) fails on Wayland with 'target STRING not available'

[riftzen-bit]

Description

Pasting images from clipboard via Ctrl+V in Droid CLI fails on Wayland with error:

Error: target STRING not available

After installing xsel, text paste works but image paste still fails with the same error.

Root Cause

Droid's clipboard handler calls xsel --clipboard --output which only supports text (STRING target). When the clipboard contains an image (image/png), xsel cannot read it.

Claude Code CLI handles this correctly by detecting the clipboard MIME type, saving image data to a temp file, and attaching it as an image. Droid should do the same.

Environment

• OS: Arch Linux (kernel 6.19.8-arch1-1)
• Display server: Wayland (Ghostty terminal)
• Clipboard tools available: wl-paste, xclip, xsel

Steps to Reproduce

1. Copy an image to clipboard (screenshot, browser image, etc.)
2. Open Droid CLI session
3. Press Ctrl+V to paste

Expected: Image is pasted as an attachment (like Claude Code CLI)
Actual: Error: target STRING not available

Suggested Fix

1. Detect clipboard content type before reading (check MIME via wl-paste --list-types on Wayland or xclip -selection clipboard -t TARGETS on X11)
2. If image: read binary data via wl-paste (Wayland) or xclip -t image/png (X11), save to temp file, attach as image
3. If text: read as text via current method
4. On Wayland, prefer wl-paste over xsel for better compatibility

Workaround

wl-paste > /tmp/screenshot.png
# Then reference the file path in Droid