100x visual upgrade: True Anomaly + Anthropic aesthetic, run-in-30s snippet, trace receipt sample, mermaid architecture, performance numbers — Doctrine v6

feat: upgrade to deep-dive content — hero + arch + competitive matrix + citations (Doctrine v6)

feat(tags): add discoverability tags [visibility-layer-2]

feat: investor-grade landing — full hero + arch + how-it-works + citations

initial commit