[FEATURE] Increase screenshot size limit from 5Mb to 6Mb

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

Mac screenshots are often 5.7Mb so it's a trouble to always crop the capture area smaller to fit the 5Mb limit for VS Code / Claude chat.

Image base64 size (5.7MB) exceeds API limit (5MB). Please resize the image before sending.

Proposed Solution

Increase the limit from 5Mb to 6Mb

Alternative Solutions

Add compression on-the-fly to the copy&paste screenshots before sending

Priority

High - Significant impact on productivity

Feature Category

Configuration and settings

Use Case Example

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Additional Context

_No response_