feat(seo): JSON-LD structured data — Organization/WebSite graph, SoftwareApplication+HowTo homepage, BreadcrumbList across tools

feat(branding): Synteny rebrand — new identity, signal-coded palette, and pipeline icons

feat(theme): dual light/dark mode with Apple light theme, toggle, and theme-aware viewers

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

style(theme): Geist fonts, AA-verified text tiers, 4-band confidence tokens

fix: replace iframe structure viewer with PDBe Molstar web component

Deploy prep: Render config + Dockerfile, refactored backend auth flow, dashboard, landing page, error states, guest flow

Re-enable OAuth: restore auth pages, Providers wrapper, dashboard auth guard, landing page CTA

Core pipeline testability: progress callback, rate limiter 429, history table

Initial commit: Bio Nexus pipeline engine — BLAST + UniProt + AlphaFold + AI interpretation (Phase 1)