Review round on the video backend:
- the resident memory check now budgets transformer plus companions like the
image backend, instead of letting auto pick a resident placement that OOMs
while the LTX text encoder and VAEs load
- a new load waits for the signalled in flight generation to exit before
tearing down the old pipeline, so two models never share VRAM during a swap
- the load worker rechecks its token right before placement, narrowing the
window where a cancelled load could put weights on a GPU the arbiter
already handed to another backend
- the step cache installs before the speed profile and compile now keys
fullgraph off an active cache, matching the image order; compiling
fullgraph first crashed the first cached generation
- teardown uninstalls the process wide compiled GGUF dequantizer so a later
speed off load gets the bit identical path
- explicit base_repo goes through the same trust gate as non GGUF repo ids,
and local checkpoint paths are verified during validation, before the
route evicts a resident model
- status reports only the speed optimisations that actually engaged
- the gallery file route streams via FileResponse with range support instead
of buffering whole clips
- the build step reuses the checkpoint path resolved during planning
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