More reliable creation, generation, and cleanup

Create now explains when a topic, idea, or valid URL is missing instead of leaving Generate unavailable without context. Starting from a template card also keeps that selected template attached to the Create handoff, so the generated deck follows the visual direction you chose.

Account controls and the saved-carousel section now hold their layout while session and library data load, reducing flashes and jumps on Create.

Standard generation once again streams incoming slide content into the editor while protecting edits made in other tabs. Fresh template-based decks also use source or stock imagery instead of copying the template author's image assets as a fallback.

Carousel deletion is reliable again for generated decks. You can remove a saved carousel from the library after confirming the permanent action.