Support arbitrary xgcm topologies for boundaries and masks#22

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topology-overhaul

Commits on Jun 25, 2026

Feature 2: antimeridian geometry helpers + topology-driven grid_conform

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Feature 1: arbitrary-topology grid_boundaries_from_mask

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Merge Feature 2: antimeridian geometry helpers + topology-driven grid_conform
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Refactor: thread face index f_c through region classes; fix .gr I/O

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Deps/CI: add shapely + xgcm; pin topology-driven sectionate in CI

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Tests: multi-tile seam stitching + optional real-grid checks; export geometry

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Restore pole-encircling mask handling in mask_from_grid_boundaries

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Docs: re-run example notebooks; document multi-tile/f_c and sectionate#47

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Remove unused GFDL example grid loader

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Add ECCOv4r4 LLC90 multi-tile example notebook

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