root 5566a171b0 PPTX: ensure [Content_Types].xml has defaults for every media extension ...

Symptom: PowerPoint prompted to repair some generated decks. Cause:
when python-pptx (or our native renderer) repacks the .pptx after we
embed Oracle template assets — some of which are SVG-backed —
[Content_Types].xml can lose the Default entry for "svg" (and other
extensions present under ppt/media), which makes Office refuse to
open the file cleanly.

Fix: after writing the deck (and after any native renderer pass),
walk ppt/media, collect the actual extensions in use, and ensure
[Content_Types].xml declares a Default for each one (svg, png, jpg,
jpeg, gif, bmp, tiff, emf, wmf, ico, webp). Repack only when at
least one new Default was added — no-op fast path otherwise.

Lines up with the existing field rule: every embedded media
extension must be declared in [Content_Types].xml Defaults, or
PowerPoint flags the file as corrupt.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-27 09:29:18 -03:00

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