Sablefold: Photo & Video Vault

This update makes organizing photos and videos easier: • Swipe to select multiple items: start horizontally, extend across rows, swipe back to shrink the range, and scroll automatically at screen edges. • Export selected photos, videos, and Live Photos to Photos while keeping vault originals. • Track export progress, stop remaining exports, and retry failed items. • Add or remove tags and favorites for multiple items at once. • Create tags directly from the tag selection screen. New tags are selected automatically. • See selection counts, with improved selection handling when searching or filtering. • Improve authorization and confirmation when deleting originals from Photos. • Add full-screen photo viewing on tap. • Add progress display and improve stability for encrypted backup. • Refine Simplified Chinese, English, Japanese, and Korean text. • Fix several bugs.