feat(design): bioluminescent green+violet palette and re-tuned landing hero

feat(seq-tools): MSA match/mismatch/gap cell highlighting, consensus row and legend

chore: frontend design polish (accent palette, remove glow/gradient utils), ignore installed skill trees, add opencode skills config

feat: add PNG/TSV/JSON/CSV/FASTA export to all 8 tool components

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