[FEATURE]Support pasting clipboard bitmap/screenshot directly into chat input

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Environment: Claude Code desktop app / CLI on Windows 11

Current behavior:

• Copying an image file from Explorer → paste works ✓
• Pasting a screenshot directly from clipboard (Win+Shift+S, Print Screen) → does not work ✗

Expected behavior:
Support pasting raw bitmap/DIB data from clipboard, similar to VS Code's input behavior.

Use case:
Frequently need to share screenshots for debugging/code review. The current workaround (save to file → copy file)
breaks flow significantly.

Related:

• VS Code extension handles this correctly, suggesting it's technically feasible within the same platform.

Proposed Solution

Environment: Claude Code desktop app / CLI on Windows 11

Current behavior:

• Copying an image file from Explorer → paste works ✓
• Pasting a screenshot directly from clipboard (Win+Shift+S, Print Screen) → does not work ✗

Expected behavior:
Support pasting raw bitmap/DIB data from clipboard, similar to VS Code's input behavior.

Use case:
Frequently need to share screenshots for debugging/code review. The current workaround (save to file → copy file)
breaks flow significantly.

Related:

• VS Code extension handles this correctly, suggesting it's technically feasible within the same platform.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

Environment: Claude Code desktop app / CLI on Windows 11

Current behavior:

• Copying an image file from Explorer → paste works ✓
• Pasting a screenshot directly from clipboard (Win+Shift+S, Print Screen) → does not work ✗

Expected behavior:
Support pasting raw bitmap/DIB data from clipboard, similar to VS Code's input behavior.

Use case:
Frequently need to share screenshots for debugging/code review. The current workaround (save to file → copy file)
breaks flow significantly.

Related:

• VS Code extension handles this correctly, suggesting it's technically feasible within the same platform.