Collecting the worklog over the past few weeks.

• Enabled Flash-Attention and CPU offloading by default in sdkit3 (i.e. Easy Diffusion v4).
• Added optional VAE tiling (and VAE tile size configuration) via config.yaml in Easy Diffusion v4.
• Created Easy Diffusion’s fork of Forge WebUI, in order to apply the patches required to run with ED. And also to try adding new features like Z-Image (which are missing in the seemingly-abandoned main Forge repo).
• Improved the heuristics used for killing and restarting the backend child process, since /ping requests are unreliable if the backend is under heavy load.
• Merged a few PRs (1 2) for torchruntime that improve support for pinning pre-cu128 torch versions and fix the order of detection of DirectML and CUDA (prefers CUDA).
• Added progress bars when downloading v4 backend artifacts.