fix: resolve inspect endpoint errors — frame fallback search and explain error handling

refactor: merge verdicts into track responses and remove dead depth code

refactor: remove depth estimation pipeline entirely

feat(demo): threat-weighted timeline waveform

fix(inspect): show errors instead of blank panel + make 3D on-demand

feat: integrate Tripo3D generative 3D models into inspection panel

feat: add GET /inspect/explain endpoint for multi-LLM interpretability

feat: solid 3D mesh rendering with mirrored back + edge faces

fix: resolve detector name from segmenter for attention maps in segmentation mode

fix: handle degenerate bbox and unhandled exceptions in inspection frame endpoint

fix: forensic code trace fixes across all inspection modules

fix: enable multi-GPU round-robin for all inspection modules

feat(inspection): add super-resolution and 3D point cloud (Phase 3)

feat(inspection): add depth analysis and attention heatmap endpoints (Phase 2)

feat(inspection): add on-demand SAM2 mask generation for detection mode

feat(inspection): add frame extraction and mask retrieval API endpoints

feat(inspection): add RLE mask encode/decode module

feat(inspection): add frame extraction and cropping module