[BUG] File drag-and-drop functionality broken and file path links non-clickable on macOS

Bug Description

Two related file handling issues are affecting the user experience in
Claude Code:

1. File drag-and-drop functionality fails: When dragging files into

Claude Code, the files briefly appear but then immediately convert to
placeholder text like "[Image #1]" instead of being properly processed.

1. File path links are non-clickable: File and folder paths displayed

in conversations appear as plain text and cannot be clicked to open or
navigate to the actual files/folders.

## Steps to Reproduce

### Issue 1: File Drag-and-Drop

1. Open Claude Code
2. Drag any file (image, document, etc.) from Finder into the Claude Code

interface

1. Observe that the file briefly appears
2. Note that it immediately converts to a placeholder like "[Image #1]"

### Issue 2: Non-clickable File Links

1. Start a conversation where file paths are referenced
2. Observe file/folder paths displayed in the conversation
3. Attempt to click on these paths
4. Note that they behave as plain text rather than clickable links

## Expected Behavior

1. File drag-and-drop: Files should remain accessible and viewable

after being dragged into the interface, allowing Claude to properly
analyze their contents.

1. File path links: File and folder paths shown in conversations

should be clickable links that open the respective files in the default
application or navigate to the folder location.

## Environment Information

• Platform: macOS (Darwin 24.6.0)
• Claude Code Version: Latest
• Date: August 25, 2025

## Impact

These issues significantly impact workflow efficiency, particularly for
users who frequently work with files and need quick access to referenced
paths during development sessions.

Claude Code 1.0.90