[FEATURE] Allow sending screenshots without text input in VSCode extension

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

Summary
In the VSCode extension, it is currently not possible to send a screenshot/image without also entering text. Users must type at least one character before they can submit.

Expected Behavior
Users should be able to send a screenshot/image alone, without requiring any text input.

Current Behavior
The submit button is disabled when only an image is attached and the text input field is empty.

Workaround
Users must type a placeholder character (e.g., a space or ".") to send the image.

Proposed Solution

Summary
In the VSCode extension, it is currently not possible to send a screenshot/image without also entering text. Users must type at least one character before they can submit.

Expected Behavior
Users should be able to send a screenshot/image alone, without requiring any text input.

Current Behavior
The submit button is disabled when only an image is attached and the text input field is empty.

Workaround
Users must type a placeholder character (e.g., a space or ".") to send the image.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_