fix(frontend): clear stale results, prefill-only bridges, and results-ready banners

feat(frontend): roll design-system classes across all dashboard pages + fix sidebar toggle alignment

feat: cross-feature auto-fill bridges — data flows between all tools via sessionStorage

fix: remove opacity:0 flicker from all pages

fix: resolve Vercel build errors (handleFind, SAMPLE_DNA, Set iteration)

feat: implement 8 tool bridges (F1-F8) + audit child components

feat: domains, interactions, primers, structure analysis, wizard, phylo tree, conservation