Changelog

Remove legacy vendor hacks and small CSS cruft across many stylesheets. -webkit-backdrop-filter vendor prefixes and outdated font-smoothing fallbacks were removed, color-mix fallback block replaced with a comment (browsers now support color-mix), and several empty/unused rules and keyframes were pruned. Also modernized some layout declarations to logical properties (inset-block/start, inset-inline/start, margin-inline), replaced negative margin centering with translate, added overflow-x/padding adjustments for pre blocks, and added a line-clamp shorthand. Changes touch numerous frontend/css files to reduce redundancy and rely on modern browser capabilities.

Update code to use the s&box public API v2 endpoints (inserted "/2/" and switched list -> find/2 with skip/take). Updated callers include PackageController, StatsController, legacy compatibility routes, package-comparison, RecommendationEngine, and various api helper functions (leaderboard, stats, get, versions). Also added/updated many response schema fixtures under schema/output_schemas and refreshed schema index and docs (llms.txt) to reflect the new endpoints and example payloads.