clarify: Colab T4 runs on GPU via PyTorch (not CPU)

install with -U so the latest rc always installs (was keeping cached rc9)

default Colab to free T4 GPU

update Show4DSTEM Colab to unified load/Show4DSTEM API + TestPyPI install

Delete notebooks/berk_workshop_v1.ipynb with huggingface_hub

Upload notebooks/widget_4dstem_demo.ipynb with huggingface_hub

Upload notebooks/berk_workshop_v1.ipynb with huggingface_hub

Upload notebooks/berk_workshop_v1.ipynb with huggingface_hub

Upload notebooks/berk_workshop_v1.ipynb with huggingface_hub

Upload notebooks/berk_workshop_v1.ipynb with huggingface_hub

workshop: pdset.preprocess for DPC+rotation; pdset ready for v2 ptycho

workshop: BF+DF single widget; Show4DSTEM width; drop cross-modality

workshop: explicit rotation pass to DirectPtychography

workshop: add Step 4b rotation curl plot

workshop: optuna aberration fit + ICOM/parallax/SSB order

workshop v2: SSB working via aberration override; CoM via upstream model; per-panel Show2D

workshop: drop parallax notebook (folded into consolidated v1)

workshop: consolidated v1 (BF/DF/DPC + 5 direct kernels + cross-modality)

workshop: sync notebooks/berk_workshop_parallax_v1.ipynb

workshop: sync notebooks/berk_workshop_v1.ipynb

workshop: single Show2D for 3 CoM panels

workshop: split BF/DF Show2D widgets + CoM magnitude + hardcoded aperture center

workshop: add berk_workshop_v1 (browse + BF/DF + probe + DPC, Colab T4)

nb: pip from electronmicroscopy/quantem@dev (real github branch with from_tensor)

nb: Colab metadata pre-selects T4 GPU runtime

docs(notebook): add show4dstem_colab.ipynb for one-click Colab workshop