Review follow-ups on the video inference backend:
- validate_load_request now rejects a -GGUF repo picked as a diffusers
pipeline (no gguf_filename) up front, instead of failing minutes later
in from_pretrained after the GPU owner was already evicted.
- New _detect_load_family helper shared by validate_load_request and
_run_load: when the repo id alone does not carry the family, fall back
to detecting it from the picked GGUF filename, so both paths agree.
- routes/video.py now threads base_repo into validate_load_request so an
untrusted companion repo is refused before the arbiter handoff.
- unload() now drains _generate_lock before _teardown_state so a
cancelled clip actually exits the denoise loop before the VRAM is
reported free.
- load_pipeline re-checks the load token after the generate-lock barrier
and raises if the load was superseded while waiting.
- Pre-commit global mutations (backend flags, gguf compile installs) are
registered per load token and rolled back in _run_load's error path
via _rollback_precommit_globals, so a failed load no longer leaks
process-wide state.
- fp32 memory estimates now apply a 2x dtype scale on non-CPU devices
for pipeline, single-file and companion sizes (bf16 tables assume
2 bytes/param); GGUF quant estimates stay unscaled.
Tests: GGUF-repo-as-pipeline rejection, _detect_load_family fallback and
override semantics; fake route backend accepts base_repo. 66 passed
across test_video_backend, test_video_routes, test_video_families,
test_video_gallery.
6485e68147