feat(MermaidPreview): add Mermaid Preview extension - #1319
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Add extension to preview Mermaid diagrams using macOS Quick Look. Features: - Supports raw Mermaid syntax, markdown code blocks, and unclosed blocks - Uses local mermaid-cli (mmdc) if available, falls back to mermaid.ink - Includes README documentation Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Replace qlmanage with custom Swift-based QuickLook panel that floats above full-screen apps. The new qlf.swift provides a floating preview window that can be dismissed with Space or Escape keys. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Background
AI assistants (like ChatGPT, Claude, etc.) often generate Mermaid diagram syntax in their responses. This extension allows users to quickly preview these diagrams without leaving their workflow.
Summary
```mermaid...```), and unclosed code blocksmmdc) if available, otherwise falls back to mermaid.inkCleanShot.2026-01-21.at.23.22.12.mp4