docs: re-run example notebooks and regenerate smoothed water output

Refresh all example notebook outputs and examples/Water_Smoothed.gpkg
with the current pipeline (perf work, merge_holes, fold repairs), and add
a spell-check word to the workspace settings.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: wrignj08

.vscode/settings.json

@@ -12,6 +12,7 @@
         "geodataframe",
         "geopandas",
         "gpkg",
+        "hausdorffs",
         "ipykernel",
         "joblib",
         "lightgreen",