v1.3.1 - hotfix: clean state after cancelling a run

Hotfix: rerunning after a mid-run cancel no longer OOMs. Cancelling a prompt used to leave the node's GPU cache and a fragmented CUDA allocator pool behind, so an immediate rerun could fail to find contiguous space for its first big activation even though the same prompt ran fine before. The VDN forward wrapper now catches the interrupt, clears everything the node owns, and releases the pool — the next run starts clean. (Base-model residency that comfy itself put host-side under VRAM pressure is unchanged; free/unload it manually if needed.)

Also: README download commands for both the original and pre-quantized stages (EN/ZH), and the branch_weights: stream description now reflects true disk-to-GPU streaming. No workflow changes.