Bug Fixes

- Outline prompt validation error: Fixed an issue where editing the outline prompt could fail with a validation error when the value was submitted as an array.

- Images from URL sources not loading in the editor: Fixed an issue where images extracted from PDF or PPTX sources added by URL would fail to load in the editor and return a 404.

- Cover page and outline editor rendering markdown content: Fixed a regression where the cover page and outline editor displayed raw markdown text instead of rendering it as formatted content.

- PPTX upload retry loop: Fixed an issue where a failed PPTX conversion could cause the source processing job to retry in a loop. Failures are now reported to monitoring and the job stops cleanly.

Improvements

- Smoother scrolling in long lessons: Refactored components in the project editor and audio player to reduce layout thrashing, improving scroll performance in long lessons on lower-spec machines.