feat(seq-tools): share colored MSA viewer across BLAST job, alignment tool, report, shared and phylo surfaces

refactor(alignment): reuse shared parseAlignedFasta on alignment page instead of local copy

feat(alignment): show matched/mismatched/gaps/length stats across all alignment views via shared AlignmentStatsBar

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

feat(alignment): multi-method MSA (clustalo/muscle/kalign/mafft/tcoffee) with method selector (3b)

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

fix: remove opacity:0 flicker from all pages

feat: instrument 7 tool pages with usage audit trail

fix: default import PhyloTreeViewer in alignment, report, and PipelineResults

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

Fix: alignment sample sequences, reverse complement tool, BLAST program filtering, sample buttons on structure/pathway pages

Fix Phase 1 endpoints: resolve UniProt→PDB in structure viewer, use proper Reactome search, surface real backend errors in frontend

Sprint 3-7: Alignment, Structure Viewer, Pathway Analysis, Utility Tools, analyze page fully live