- gpu_service: detect host render/video group GIDs from /dev/dri node ownership
(render node → render GID, paired card node → video GID); added to GPUInfo +
exposed via /api/system/gpus. inject_dri now emits numeric group_add entries
(e.g. ["991","44"]) when GIDs are known, falling back to names otherwise;
remove_gpu strips those GIDs + LIBVA_DRIVER_NAME; dri_group_gids() for cleanup.
- editor set-gpu passes render_gid/video_gid through; GPUSelector shows detected
GIDs, defaults video group on, and sends them.
Verified: py_compile, unit check (inject→["991","44"] then clean removal),
frontend tsc build, image imports. Live iGPU verify is on the user's hardware.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
