export-diagram-deck-to-pptx

name	export-diagram-deck-to-pptx
description	Export a Marp deck that uses Mermaid or diagram fences to PPTX with the published MarpToPptx CLI.

Export Diagram Deck To PPTX

Use this skill when the user is working on a Marp deck that contains Mermaid fences or diagram fences and wants an editable PowerPoint export.

Purpose

Export a diagram-heavy deck through the published MarpToPptx CLI while preserving the normal Marp authoring flow.

Detection

Treat the deck as diagram-focused when it contains fences such as:

```mermaid
flowchart LR
```

```diagram
diagram: matrix
```

Preferred Commands

If the deck has a companion CSS theme:

dnx MarpToPptx path/to/deck.md --theme-css path/to/deck.css -o path/to/deck.pptx

Without a CSS theme:

dnx MarpToPptx path/to/deck.md -o path/to/deck.pptx

Installed-tool variants are also fine:

marp2pptx path/to/deck.md --theme-css path/to/deck.css -o path/to/deck.pptx

Guidance

1. Confirm the active file is a Markdown deck.
2. Check whether it contains mermaid or diagram fences.
3. If a companion CSS file exists and is part of the author's workflow, pass it with --theme-css.
4. Preserve any deck-level diagram options such as diagram-theme in Markdown rather than trying to rewrite the deck automatically.
5. After export, recommend opening the .pptx to review diagram layout and readability.

Important Rules

• Use the published CLI path, not this repo's local PowerShell smoke scripts, for normal end-user authoring workflows.
• Do not remove or rewrite Mermaid or diagram fences just to make export succeed.
• If the user reports styling problems, first confirm whether the correct CSS file was supplied.
• If the user wants remote assets in the same deck, mention --allow-remote-assets explicitly rather than assuming it.

Output Expectations

• Report whether Mermaid or diagram fences were detected.
• Report the exact command used.
• Report whether a CSS file was applied.
• Report the generated .pptx path.