MellowGPU initial v1 — source and specification

This prerelease publishes the initial specification and source foundations at commit 5d31a6c4f8f55091be5cfae5e9da3d7f1513b885. It is a source archive, with no installer or newly built driver kext. Existing SDK static libraries and binary test fixtures remain in the archive; the prebuilt Lilu runtime payload is excluded. Existing v0.5.1-dev driver artifacts are unchanged.

Includes nine architecture/validation documents, three ADRs, versioned ABI/capability contracts, pinned source indexing, Intel/AMD/NVIDIA metadata interfaces, checked GFX9 packet encoding, NVIDIA queue/lifecycle foundations, upstream-intake safeguards and Clang-based Metal declaration inventory validation. All seven exact-head workflow runs pass. verification.json records the validation scope; SHA256SUMS binds the assets.

The actual first target is 15IGL7 / Intel N4120 GLK 8086:3185, native x86_64 macOS15.8.1. Qualified GPU profiles remain zero. Native GPU execution, applicable Metal3, GPU IOSurface/WindowServer and app/game qualification are incomplete and were not run. No boot or security settings were changed. The Claude manifest is process provenance, not hardware qualification; eight newer GLK author outputs are still under implementation and are not included in this snapshot.