chore: remove deploy script; add persistent model storage & diagnostics

feat(downloader): prioritize GitHub CodeFormer release asset URL

Update model sources: prioritize Gourieff/ReActor dataset for InSwapper, sczhou/CodeFormer; add HF dataset URL parsing

Downloader robustness: multi-source fallbacks, HF token support, alternate inswapper filename acceptance

Refactor startup: remove LivePortrait provisioning; fix downloader dirs; integrate swap pipeline in API; update entrypoint requirements

Pivot: remove GFPGAN + reenactment stack; CodeFormer-only enhancement, purge legacy files, update docs & downloader

hardening: unified model provisioning (sentinel, audit logs, removed force flags, /debug/models endpoint)

downloader: add file locks + atomic replace; engine: stop generator opset downgrade and fix typing/indent

Downloader+Engine: opset19 conversion for generator too; force refresh; robust load for all LP models

LivePortrait: auto-downgrade opset>19 to 19 for appearance/motion; force re-download flags; register ort-extensions; retry loaders

Simplify generator sourcing: single generator.onnx path and single URL; fail fast on invalid; remove filename and URL fallbacks

ORT ext + robust generator loading: add onnxruntime-extensions, register custom ops; validate ONNX downloads and retry with alt URLs; keep shape inference disabled

Generator: switch to standard warping_spade.onnx; disable shape inference by default; force generator re-download; avoid TensorRT-dependent plugin by default

LivePortrait: use warping_spade-fix.onnx; add optional GridSample plugin; register custom ops and shape-inference toggle

Make generator.onnx required in downloader; enrich /initialize error with model file presence for faster diagnosis

Models: default FasterLivePortrait ONNX URLs; add stitching.onnx support; expose MIRAGE_REQUIRE_NEURAL flag in /debug/models

Init: succeed with landmark fallback; /debug/models shows generator.onnx; add models README

Add LivePortrait neural face animation

Docker: set writable caches (/app/.cache) and model dirs; ENV HOME/HF_HOME/TRANSFORMERS_CACHE; Downloader: use HF_HOME/hub and avoid '/.cache' permission issues on Spaces

Downloader robustness: retries, HF hub fallback; startup ensures ONNX presence when enabled

Add landmark reenactor fallback and LivePortrait ONNX URLs