Introduces new marketing bridge documents for Decision Capsules, Hybrid Reachability, and Evidence-Linked VEX. Updates product vision, README, key features, moat, reachability, and VEX consensus docs to reflect four differentiating capabilities: signed reachability (hybrid static/runtime), deterministic replay, explainable policy with evidence-linked VEX, and sovereign/offline operation. All scan decisions are now described as sealed, reproducible, and audit-grade, with explicit handling of 'Unknown' states and hybrid reachability evidence.
