Remove remaining @spaces.GPU decorators from bake_albedo and bake_ao

Fix ZeroGPU proxy token expiry: single GPU allocation for full pipeline

Fix nvdiffrast SM mismatch: add +PTX arch + GL context fallback

Fix nvdiffrast ABI mismatch + pymeshfix TrackedArray crash

Fix pymeshlab pipeline crash + add post-process progress streaming

Fix all post-processing errors on ZeroGPU/headless environment

Fix state persistence across ZeroGPU subprocess boundary

Fix viewer not updating: direct GLB output + allowed_paths

Add streaming progress to generate_hunyuan + fix omegaconf dep

Implement Hunyuan3D-2.1 generation with background removal

Fix: preprocess image on remote TRELLIS.2 Space before calling image_to_3d

Polish: preset loading, quota recording, coacd fallback

Fix: replace PyPI nvdiffrast (doesn't exist) with Jeff Xiang's prebuilt wheel

Milestones 9-12: UniRig, UE5 Export, Presets, Polish

Milestones 6+8: albedo/material/AO baking + ORM pack, LODs, collision, pivot, scale

Milestone 4+5: UV unwrap (xatlas), symmetry, and normal map baking (nvdiffrast)

Milestone 3: Stage 2A-2C Mesh Cleanup (repair, cleanup, decimation)

Switch Stage 1 to gradio_client: all TRELLIS.2 custom wheels ABI-broken on torch 2.8+

Fix circular import: bootstrap trellis2 at app.py top-level before src.stages import

Milestone 2: Wire TRELLIS.2 generation + vendor both model packages

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