feat(extension): improve image attachments, screenshot quality, and chat workflow

[BOTOOM]

Summary

This PR focuses on a significant overhaul of the image handling and screenshot capabilities within the extension. It introduces a more robust "pre-upload" workflow, improves the visual quality of captured content, and streamlines the user interface for a better context-aware chat experience.

Key Changes

📸 Screenshot & Context Improvements

• Quality Enhancement: Increased the JPEG compression quality from 70% to 90% for visible tab captures to ensure text remains legible in shared images.
• Simplified Workflow: Deprecated the "Full Page" screenshot mode due to stitching and quality issues, focusing on high-quality viewport captures that are more reliable and performant.
• Context-Aware Refinements: Updated the context extraction logic to better handle page metadata and link references.

📤 Optimized Image Upload Workflow

• Pre-upload Architecture: Replaced the previous base64-in-prompt method with a parallel pre-upload system. Images are now sent to the backend individually to avoid large payload limits and performance bottlenecks.
• Efficient Referencing: The chat service now sends lightweight image references instead of raw data, significantly reducing latency during message streaming.

🎨 UI/UX Enhancements

• Image Attachment Zone: Redesigned the attachment area with better status indicators for capturing, uploading, and error states.
• Chat & Bubbles: Improved the MessageBubble and ChatView to handle multiple image sources (paste, drag & drop, screenshot) with clear visual feedback and better error reporting.
• Sidepanel Sync: Updated the SidePanel and various entrypoints to support the new asynchronous image processing flow.

🛠️ Technical Debt & Stability

• Parallel Processing: Implemented Promise.all logic in the API client for faster multi-image uploads.
• Robust Error Handling: Added explicit error metadata to assistant messages to provide clear feedback when stream or upload issues occur.

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Project	Deployment	Actions	Updated (UTC)
devmentorai-website-cli	Ready	Preview, Comment	Feb 27, 2026 9:09pm