Blocker #1: rename tile_width/tile_height → tile_size in generate_grid_click_points.
Callers in bulk_harvest.py and test_cadastre_bulk.py used tile_size; def had
tile_width+tile_height → TypeError at runtime.
Blocker #2 (10 failures in test_admin_cadastre.py) was side-effect of #1:
TypeError at import chain (app.main → admin_cadastre → bulk_harvest)
broke FastAPI app load → dependency_overrides AttributeError. Now resolved.
Also register `slow` pytest marker in pyproject.toml to suppress
PytestUnknownMarkWarning.