zarc-window

name	zarc-window
description	Interpret and expose ZARC planting windows from repository-supported official references with traceable constraints. Use when changing ZARC lookup window selection or presentation. Do not use when producing unsupported agronomic recommendations beyond available source data.

ZARC window

• Inspect the current ZARC data model and source adapters before editing.
• Keep municipality crop soil or cycle constraints explicit when the data provides them.
• Preserve source provenance and update date with returned or stored records when available.
• Distinguish official ZARC windows from heuristic climate suggestions.
• Return no recommendation when required dimensions are missing rather than guessing.
• Add tests for a supported case unsupported combination and missing source data.
• Run Ruff and pytest from backend/.