[guijacquemet]

Summary

• Packaging: requires-python changes from >=3.10 to >=3.11, and the Ruff target from py310 to py311. The CI test matrix changes from 3.10/3.13 to 3.11/3.13. The AGENTS style line is updated.
• Contract §8.2 and PlaneRecord: position_id is now the XY position within its technical repeat. It comes from reliable metadata, or from the file name without extension when one file holds exactly one position. This matches what morphobricks-preprocessing writes after Fill position_id per image (D02) and require Python 3.11 (D01) morphobricks-preprocessing#19. Before, the contract said it was "never inferred from file names". The CSV schema and code behaviour are unchanged; only the description changes.

Decisions

These follow the MorphoBricks owner decisions of 2026-10-26, recorded in the MorphoFeature decision ledger (CellMigrationLab/MorphoFeature#6):

• D01: every brick requires Python ≥3.11, with 3.11 as the shared installer version.
• D02: the canonical FOV key is condition + biological_repeat + technical_repeat + position_id.

Notes for review

• Raising the Ruff target to py311 required no code changes.
• CI was not relied on: the org has no Actions credits for private repos, so the results below are from local runs. The matrix edit only keeps the workflow consistent with requires-python.

Tests (local)

• Python 3.11.17: ruff check . all passed; ruff format --check . 19 files already formatted; pytest 140 passed.
• Python 3.13.17: pytest 140 passed.
• Python 3.10: pip install -e . is refused, which is intended.

Do not merge without the owner's go-ahead.

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