[FEATURE] DND context

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

I am testing the Claude Code extension in VS Code for the first time.
I would really like the extension to add a feature I enjoy in GitHub Copilot.
Drag and drop of a file adds it to the context.
For now, I can only do drag and drop + Shift, which adds
@.../src/layouts/blueprints/components/BoxKeyboardHelper.const.ts.
This is not very user-friendly and is difficult to manage.

<img width="903" height="211" alt="Image" src="https://github.com/user-attachments/assets/7541ef60-4b2e-476f-8f5b-725a4cb5aedb" />

Proposed Solution

Add a context manager top of chat input for dnd

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

Other

Use Case Example

_No response_

Additional Context

_No response_