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Diagram downloads are now portable PNG images rendered at 2× scale on white. Long UML labels and wrapped signatures retain their full text, and MCP receives complete image content with compact metadata.
This release upgrades Mermaiden to 15.1.1. Database migrations back up live diagrams and upgrade their snapshots to version 12; existing published architecture evidence remains immutable and readable.
Breaking changes:
- Use
/api/diagrams/{diagram_id}/pnganddownload_diagram_pnginstead of the SVG download endpoint and operation. - Downloads require the expected diagram revision. PNG image content replaces SVG text pagination; offset and limit are no longer accepted.
- Migrated live diagrams advance their revision. Reload diagram metadata before downloading.
The browser retains its interactive diagram previews and downloads PNG files.