Upload hf_space/spill/monocular_3d.py with huggingface_hub

fix: depth scaling, device detection, and sanity check for 3D tab

Add 3D Reconstruction tab with monocular depth estimation

reconstruct_glass_3d: accept list of keypoints for batch reconstruction

UI updates: remove kp labels, show original bbox, CriticBarista-style logging, fluid_level_2 explanation

Fix: bind Gradio to 0.0.0.0:7860 for Docker networking

Switch to Docker SDK (Python 3.12) to fix pydub/audioop crash

Fix Python 3.13 audioop crash: add Dockerfile pinning Python 3.12

Initial SPILL glass keypoint detection demo

initial commit