gert-enif-expert

name	gert-enif-expert
description	Expert knowledge for working on the Ensemble Information Filter (EnIF) plugin in GERT. Use this skill when debugging, implementing, or modifying the EnIF data assimilation math and its parameters.

GERT EnIF Expert

This skill contains the mathematical rules and specific polars / numpy matrix manipulations required for the EnIF data assimilation plugin.

Core References

When making mathematical updates or changing parameter schemas, use the read_file tool to consult the following repository documentation:

• docs/developers/enif_implementation_4_ai.md: Detailed breakdown of the EnIF algorithm's required data shapes, polars to numpy extraction steps, precision matrix building (with NetworkX graphs), and final dataframe reassembly rules.
• docs/developers/update_algorithms.md: The general contract for all update algorithms, explaining the role of the UpdateAlgorithm base class and the SpatialToolkit.

Use these references to ensure the complex tensor math remains compliant with both the scientific paper expectations and the strict GERT data contracts.