ri-100-average-revision

name	ri-100-average-revision
description	Use this skill when reviewing RI=100 gamma transitions in ENSDF adopted files. Replaces unnecessary RI=100 averaging with source adoption from the most precise dataset, updates G-record RI/DRI when needed, rewrites cG RI$ comments, and validates the result.
argument-hint	["adopted.ens"]

RI=100 Average Revision in Adopted ENSDF Files

ENSDF 80-column data record and field definitions, structural rules, column positions, and uncertainty notation: .github/agents/ENSDF-Agent.agent.md. Spot-check policy: .github/copilot-instructions.md.

Use When

• A cG RI$ comment averages multiple RI=100 values
• Multiple datasets normalize the same gamma to 100 and one source must be adopted
• The adopted G-record RI/DRI may need to follow a single source instead of an unnecessary average

Core Rule

RI=100 values are normalization references, not just normal intensities. Do not average them. Choose one source by comparing absolute uncertainties implied by ENSDF notation, not raw {I...} digits.

Workflow

1. Find G records with RI=100, 100.0, or 100.00 whose cG RI$ comment uses weighted or unweighted averaging.
2. Extract every quoted RI source and convert each uncertainty to its absolute value from ENSDF last-digit notation.
3. Adopt the source with the smallest absolute uncertainty. If the G-record RI precision or DRI reflects averaging rather than that source, update the fields to match the adopted source.
4. Rewrite the cG RI$ block as from SOURCE. plus Other: or Others: for the remaining datasets.
5. Preserve comment order: cG E$ -> cG RI$ -> cG M$ -> cG MR$ -> other identifiers.
6. Validate each changed G record with ensdf_1line_ruler.py, then run file-level validation.

Decision Notes

• If only one dataset quotes RI=100, no special handling is needed.
• If two sources have equal absolute uncertainty, rewrite the cG RI$ block as from SOURCE1 and SOURCE2.
• If the task edits only comments, skip ruler and column validation only when no G-record field changes are made.

Completion Criteria

• No cG RI$ comment averages RI=100 values.
• Each RI=100 case cites one adopted source and lists the remaining sources as alternates.
• Any changed G-record RI/DRI fields match the adopted source.
• Targeted RI=100 checks and file-level validation pass.