Add rank animals report for 12 Katahdin sheep sorted by WWT

[Copilot]

Rank 12 Katahdin sheep using weighted trait index, sorted by weaning weight (WWT) per issue specification.

Implementation

• Data retrieval: Used NSIP MCP tools to fetch details for all 12 LPN IDs (breed ID 640 for Katahdin)
• Scoring: Applied default hair sheep weights (BWT:-1.0, WWT:2.0, YWT:1.5, PWWT:1.0, NLB:1.0)
  • Formula: Score = Σ(trait_value × weight × accuracy / 100)
• Sorting: Ordered by WWT trait value descending (not composite score)
• Output: Generated report.md with detailed profiles and breed-relative context, data.csv with score breakdowns

Key Findings

• Top WWT performers: FLE087 (+3.07), FLE249 (+3.05), FLE047 (+2.95)
• Proven sire NCS310 has highest accuracy (80-81%) with desirable negative BWT (-0.24)
• 10 females, 2 males analyzed; most born 2025 with moderate accuracy (36-65%)

Files Changed

reports/2026-02-16-rank-animals/
├── report.md    # 289 lines with detailed animal profiles
└── data.csv     # 13 rows (header + 12 animals)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>02162026</issue_title>
<issue_description>### Action

Rank Animals — weighted trait index ranking

LPN IDs

6401492020FLE249
6401492022FLE002
6401492023FLE078
6401492025FLE011
6401492025FLE024
6401492025FLE029
6401492025FLE047
6401492025FLE082
6401492025FLE087
6401492025FLE008
6402382024NCS310
6401492025FLE141

Trait Weights

No response

Sort Trait

WWT

Notes

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes 02162026 #7

---

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[Copilot]

Pull request overview

This PR implements a weighted trait index ranking report for 12 Katahdin sheep, sorted by weaning weight (WWT) as requested in issue #7. The implementation uses the NSIP MCP tools to retrieve breeding data and applies default hair sheep trait weights (BWT:-1.0, WWT:2.0, YWT:1.5, PWWT:1.0, NLB:1.0) to calculate composite scores, while sorting the final output by WWT value descending rather than by composite score.

Changes:

• Added a comprehensive markdown report with animal rankings, detailed individual profiles, breed context, and breeding recommendations
• Generated a machine-readable CSV file with complete trait data and score contributions for all 12 animals
• Demonstrated proper use of NSIP breed ranges (Katahdin breed ID 640) and percentile calculations for breed-relative positioning

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
reports/2026-02-16-rank-animals/report.md	Comprehensive 289-line report with rankings sorted by WWT, detailed animal profiles with EBV data, breed context, and actionable breeding recommendations
reports/2026-02-16-rank-animals/data.csv	Machine-readable CSV with 12 animals' complete trait data including rank, scores, and trait contributions

[Copilot]

There is an inconsistency regarding which animals are sired by NCS310. Lines 225 and 267 claim that NCS310 has "three ewes" or "3 daughters" in this group (FLE011, FLE029, FLE008), but only FLE011 (line 161) and FLE029 (line 177) have this relationship mentioned in their individual analysis sections. FLE008's analysis (line 129) does not mention being sired by NCS310. Either FLE008's analysis should be updated to include this information, or the count should be corrected to "two ewes" with FLE008 removed from the list.

Suggested change

	**Analysis**: Proven sire with 25 progeny and excellent accuracy values (68-81%). Negative birth weight is highly desirable — reduces lambing difficulty. Despite ranking 11th by WWT, the high accuracies and low BWT make this ram a reliable breeding option. Already sire to three ewes in this group (FLE011, FLE029, FLE008).
	**Analysis**: Proven sire with 25 progeny and excellent accuracy values (68-81%). Negative birth weight is highly desirable — reduces lambing difficulty. Despite ranking 11th by WWT, the high accuracies and low BWT make this ram a reliable breeding option. Already sire to two ewes in this group (FLE011, FLE029).

[Copilot]

The statement "These ewes produce fast-growing lambs ideal for market" is misleading because two of the three ewes mentioned (FLE087 and FLE047) were born in early 2025 and are too young to have produced any lambs yet. The recommendation should be rephrased to reflect that their high WWT EBVs predict they will produce fast-growing lambs, rather than stating it as an accomplished fact. For example: "These ewes are predicted to produce fast-growing lambs ideal for market based on their high WWT EBVs."

Suggested change

	1. **Top WWT Performers** (6401492025FLE087, 6401492020FLE249, 6401492025FLE047) show excellent growth traits and should be prioritized for retention. These ewes produce fast-growing lambs ideal for market.
	1. **Top WWT Performers** (6401492025FLE087, 6401492020FLE249, 6401492025FLE047) show excellent growth traits and should be prioritized for retention. These ewes are predicted to produce fast-growing lambs ideal for market based on their high WWT EBVs.

[Copilot]

The report header references "Closes #5" but the PR description indicates this PR fixes issue #7. The issue number in this header should match the actual issue number being addressed. Please update this to "Closes #7" to ensure proper issue tracking and linking.