Multi-image drag-and-drop only attaches first image (regression since v2.1.83)

Description

When dragging and dropping multiple image files into the Claude Code input at once, only the first image is attached. The remaining images are silently dropped.

This worked correctly prior to v2.1.83. The regression likely coincides with the new [Image #N] chip insertion behavior introduced in that release.

Steps to Reproduce

1. Open Claude Code CLI or desktop app
2. Select 3-4 image files in Finder
3. Drag and drop them all at once into the Claude Code input field
4. Only 1 image is attached (shows [Image #1] chip); the other images are lost

Expected Behavior

All dropped images should be attached and appear as [Image #1], [Image #2], [Image #3], etc.

Actual Behavior

Only the first image in the drop is attached. The rest are silently ignored.

Workarounds

• Drop/paste images one at a time
• Reference images by file path in the prompt instead of drag-and-drop

Environment

• Claude Code version: 2.1.84
• OS: macOS 26.3.1 (Build 25D2128)
• Platform: Darwin (Apple Silicon)