102 task add GridCell model #286

Job	Run time
mypy	29s
ruff	12s
unit (ubuntu-latest, 3.11, lowest-direct)	2m 25s
unit (windows-latest, 3.12, lowest-direct)	2m 54s
unit (ubuntu-latest, 3.12, lowest-direct)	2m 23s
unit (macos-latest, 3.13, lowest-direct)	2m 2s
unit (windows-latest, 3.11, highest)	2m 49s
unit (macos-latest, 3.11, lowest-direct)	1m 54s
unit (ubuntu-latest, 3.12, highest)	2m 32s
unit (macos-latest, 3.12, lowest-direct)	1m 34s
unit (ubuntu-latest, 3.13, highest)	2m 37s
unit (windows-latest, 3.13, highest)	3m 18s
unit (macos-latest, 3.13, highest)	2m 0s
unit (windows-latest, 3.11, lowest-direct)	2m 51s
unit (ubuntu-latest, 3.13, lowest-direct)	2m 35s
unit (macos-latest, 3.11, highest)	1m 30s
unit (windows-latest, 3.12, highest)	2m 51s
unit (windows-latest, 3.13, lowest-direct)	2m 53s
unit (macos-latest, 3.12, highest)	1m 47s
unit (ubuntu-latest, 3.11, highest)	2m 15s
coverage	9s
	44m 0s

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