docs: fix Quickstart for kernels>=0.15 (explicit revision + trust_remote_code)

Add 'See it live' holographic Spaces section + sibling cross-links

lambda-gate repo card (NDA-safe, Λ=Conjecture 1 advisory)

lambda-gate core: Λ aggregator + advisory gate + axioms (v0.2.0)

lambda-gate public API v0.2.0

lambda-gate pure nn.Module layers

lambda-gate ops shim

szl-lambda-gate v0.2.0 metadata

szl-lambda-gate build.toml (universal)

initial commit