Update 0.8.70

Improved magnetic holders, smoother collection management, and fixes for graphics disappearing during longer sessions. Magnetic Holders & Card Care [*]Updated magnetic holders with improved shapes, card fit, magnets, and acrylic details. [*]Improved holder lighting and reflections to keep cards clearer. [*]Added a new magnetic holder closing sound. [*]Fixed Card Care animations getting interrupted or snapping when applying and removing protection in the binder. Binder & Card Visuals [*]Reduced the overly bright, washed-out appearance of cards inside binders. [*]Restored foil and holographic effects on visible binder cards. [*]Improved color consistency between binder cards and focused inspection. [*]Fixed saved table positions that could leave objects out of view. Performance & Stability [*]Fixed a graphics resource leak during repeated previews and inspections that could cause stream or room visuals to disappear. [*]Improved cleanup for card, slab, pack, and item previews. [*]Improved grading submission buttons so adding more cards no longer causes increasing delays. [*]Reduced pauses when managing protection and filing cards in large collections. [*]Moved routine saving into the background while preserving save safety checks. [*]Improved room display updates and table rendering performance.