January 12 Release

We've been shipping fast. This release brings CSV spreadsheet editing, Excalidraw diagrams, inline charts in agent sessions, and a critical fix for Windows MCP users. Here are the highlights:

CSV Spreadsheet Editor

Edit CSV files with a full spreadsheet experience - and let Claude Code edit them too:

• **Basic spreadsheet functions **
• **AI-driven spreadsheet editing with Claude Code **
• Cell-level diff highlighting - see exactly what the AI changed

Excalidraw Drawing Editor

Draw diagrams and let Claude Code help:

• AI-driven diagram editing - ask Claude to create and modify your diagrams
• Layout and Editing tools for human editing
• Import from Mermaid

Inline Charts and Images in Agent Sessions

Claude Code can now show you charts and images directly in the chat:

• Display charts inline - bar, line, pie, area, scatter
• Display images from disk in the conversation

File to AI Session Links and Unified Header Bar

All editor types now share a consistent header bar:

• File AI Session History - reopen any ai session that edited this file for seamless context
• Breadcrumb navigation across all editors
• **Diff approval bar **now appears for markdown, Monaco, and mockup files

Windows MCP Fix

For our Windows users - MCP servers now work correctly:

• Environment variable expansion fixed
• Argument quoting fixed
• OAuth lock file cleanup prevents connection errors

Quality of Life Improvements

• Clickable file paths in agent transcript tool arguments
• File tree auto-scroll now works when switching tabs

Bug Fixes

We squashed many bugs:

• Consecutive AI edits now correctly update diff mode
• Cmd+Y no longer opens document history when in agent mode
• Claude Code now sees file-scoped extension tools
• Sync connections no longer fail silently when limit reached
• Typing in AI input no longer causes lag
• AI session lookups work across multiple windows
• Plugins installed from the Claude Code CLI now correctly work in Nimbalyst

Thanks for being part of the Nimbalyst community. Your feedback drives these improvements!

Installation

• macOS: Download and open the .dmg file, drag Nimbalyst to Applications
• Windows: Download and run the .exe installer
• Linux: Download the .AppImage, make it executable, and run it

The app will automatically check for updates.