# PPTX Import Text Layout / Performance Fix (alpha36-fix4)

## Summary

This fix improves imported PPTX/PPTM visual fidelity and responsiveness for large presentations.

## Changes

- Text-only PowerPoint shapes no longer create unwanted white/grey rectangles.
- Imported text uses Fabric `textbox` instead of `i-text` so width wrapping is honored.
- East Asian vertical text (`bodyPr vert="eaVert"`) is converted into stacked editable text.
- Text in dark filled shapes defaults to white when the PPTX theme color is inherited.
- Text insets and center anchoring are approximated from OOXML `bodyPr`.
- Large PPTX/PPTM decks use lazy image materialization: image bytes are decoded for the active slide only.
- Slide thumbnails for image-heavy slides remain lightweight safe previews.

## Notes

This is still an editable approximation layer, not a final pixel-perfect PPTX renderer.
The next compatibility step is to implement full DrawingML text body, theme, group transform, and native table rendering.