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Code blocks & canvas

Every fenced code block in an assistant reply is syntax-highlighted, line-numbered and comes with a small toolbar. For longer snippets, the Open in canvas action gives you a wider, easier-to-read view alongside the conversation.

Inline actions

Hover over any code block and the toolbar exposes:

• Copy — put the snippet on the clipboard. Works for everything, even non-code (JSON, logs, plain prose in a fenced block).
• Export — save to a file via the native save dialog. The default filename uses a sensible extension based on the detected language (snippet.ts, snippet.py, Dockerfile, and so on).
• Open in canvas — pop the block out into the wide canvas panel.

The canvas panel

The canvas opens in the right-hand slot of the window. It shows:

• Title bar with the inferred language and a short title.
• Copy button mirroring the inline action.
• Export button with the same sensible-filename defaults.
• Read-only body with line numbers and language-aware highlighting. Unknown languages fall back to auto-detection.

The canvas is also where text and code attachment previews open — clicking a recognised code or text file chip in the transcript routes straight here, with the same highlighting and export controls.