Fix configure_render CPU settings override + reduce quality for practical render times

Fix KeyError: "Emission Color" not found in Blender 3.6

Add smoke test: 64x64, 1 sample, 1 bounce, CPU Cycles

Diagnostic: single CPU Cycles frame before full render

Switch to CPU rendering to bypass A100 GPU kernel hang

Switch to per-frame write_still + CUDA-preferred

Add live-frame preview pipeline

Migrate to Blender 3.6.5 LTS for stable GPU rendering

Simplify render: no denoising, fewer bounces, static BVH

Switch back to OptiX-preferred + animation=True

Use animation=True to keep GPU context alive across frames

Switch to EEVEE render engine to bypass Cycles GPU kernel hang

fix: only enable devices matching compute backend (CUDA only)

Switch to CUDA-preferred, add --quiet + log filter to suppress sync spam

Fix: texture_limit must be string in Blender 4.0, not int

Fix: use /tmp instead of /app for output (HF Spaces non-root user)

Fix Cycles render pipeline: adaptive denoiser, Popen streaming, LOD, fonts

fix: update progress_file path when --output is overridden

GPU render: Blender 4.0.2 + Cycles + Gradio auto-start