CLN: Remove bloated generated notebooks and dynamically bundle datasets in CI

Author: natinew77-creator

.gitignore

@@ -103,3 +103,5 @@ venv/
 .hypothesis/
 .ruff_cache/
 .ipynb_checkpoints/
+jupyterlite_contents/auto_tutorials
+jupyterlite_contents/mne_data

doc/conf.py

@@ -510,6 +510,21 @@
             d.parent.mkdir(parents=True, exist_ok=True)
             shutil.copy2(s, d)
 
+# Also inject SSVEP and EEGLAB testing datasets for JupyterLite
+mne_data_base = Path(os.path.expanduser("~/mne_data"))
+lite_data_base = Path(os.path.abspath(os.path.dirname(__file__))) / "jupyterlite_contents" / "mne_data"
+
+src_ssvep = mne_data_base / "ssvep-example-data"
+dst_ssvep = lite_data_base / "ssvep-example-data"
+if src_ssvep.exists() and not dst_ssvep.exists():
+    shutil.copytree(src_ssvep, dst_ssvep, dirs_exist_ok=True)
+
+src_eeglab = mne_data_base / "MNE-testing-data" / "EEGLAB"
+dst_eeglab = lite_data_base / "MNE-testing-data" / "EEGLAB"
+if src_eeglab.exists() and not dst_eeglab.exists():
+    shutil.copytree(src_eeglab, dst_eeglab, dirs_exist_ok=True)
+
+
 # Build the local MNE wheel so JupyterLite can use the current development version
 dist_lite_dir = os.path.join(
     os.path.abspath(os.path.dirname(__file__)), "_build", "dist_lite"