The Qwen3-VL learned position embedding is interpolated to the runtime patch
grid with the default bilinear+antialias (align_corners=False) sampling, while
the transformers reference uses align_corners=True (torch.linspace(0, side-1, T)).
The mismatch scales grounding coordinates about the image center, growing with
image size and per-axis for non-square images (see #16880).
* feat: add video support for Qwen3.5
* various clean up
* revise the design
* fix llava-uhd case
* nits
* nits 2
---------
Co-authored-by: andrewmd5 <1297077+andrewmd5@users.noreply.github.com>
* support qwen3.5 series
* remove deepstack for now, and some code clean
* code clean
* add FULL_ATTENTION_INTERVAL metadata
* code clean
* reorder v heads for linear attention to avoid expensive interleaved repeat
* clip: move model cgraphs into their own files
* more explicit enums
* fix linux build
* fix naming
* missing headers
* nits: add comments for contributors
