fix(seq-tools): stop auto-scrolling on job completion, fix structure highlight & AlphaFold viewer loading

Refine design system: semantic color tokens, tiered motion, denser result cards, VinaLog toolbar

refactor(icons): migrate lucide-react to @phosphor-icons/react, remove dep

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

fix: remove opacity:0 flicker from all pages

feat: add DNA sequence output across BLAST, UniProt, sequencing, primers, and SequenceRetrieval

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

feat: instrument 7 tool pages with usage audit trail

Fix pipeline stuck issue: synthetic FASTQ fallback and demo mode

Fix sequencing dropdown: hardcoded defaults so dropdown works before backend deploys

Phase 3: Sequencing pipeline (FASTQ -> QC -> alignment -> variant calling -> report)