skills(multi-objective): add blank line after frontmatter to enable skill signing

[rgsl888prabhu]

Summary

• Adds a blank line after the frontmatter closing --- in skills/cuopt-multi-objective-exploration/SKILL.md to enable skill signing.

Test plan

• Verify skill signing pipeline picks up the updated file

🤖 Generated with Claude Code

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR updates skill documentation and the skill-card and benchmark reports (content, evaluation metadata, and result tables), and replaces the skill.oms.sig DSSE signature bundle; it also inserts one blank line in SKILL.md.

Changes

CuOpt Multi-Objective Skill updates

Layer / File(s)	Summary
SKILL whitespace skills/cuopt-multi-objective-exploration/SKILL.md	Inserted one blank line near the start of the "Multi-Objective Exploration" section.
Skill card edits skills/cuopt-multi-objective-exploration/skill-card.md	Reworded the Use Case, updated the "cuOpt Examples" reference, clarified evaluation agents/tasks (Claude Code, Codex; NVSkills-Eval run, 4 tasks), and refreshed the evaluation results table (Num counts changed 6→4).
Benchmark updates skills/cuopt-multi-objective-exploration/BENCHMARK.md	Updated evaluation metadata (date, dataset size 3→4, attempts per task), adjusted dataset composition (positive tasks 2→3), refreshed results table percentages/uplifts, and modified Tier 1/Tier 2 validation summaries.
Signature bundle skills/cuopt-multi-objective-exploration/skill.oms.sig	Replaced the DSSE envelope payload digests and signature blob while retaining bundle structure and certificate chain.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Suggested reviewers

• tmckayus

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: adding a blank line to SKILL.md to enable skill signing, which aligns with the primary content modification.
Description check	✅ Passed	The description directly relates to the changeset, explaining the blank line addition and its purpose for skill signing, matching the actual modifications across the files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch skill/sign-multi-objective

---

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[rgsl888prabhu]

/nvskills-ci

[copy-pr-bot]

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@skills/cuopt-multi-objective-exploration/skill-card.md`:
- Around line 32-34: The "Evaluation Agents Used" entries use only code names
(`claude-code`, `codex`) instead of the required human-readable format; update
the list under the "Evaluation Agents Used" heading to follow the template
pattern by prepending human-readable names and keeping the code names in
parentheses (e.g., "Claude Code (`claude-code`)", "Codex (`codex`)") so the
entries for claude-code and codex match the common skill-card contract and
NVSkills validation expectations.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 2aed5447-c04b-4101-844f-fba360d4a108

📥 Commits

Reviewing files that changed from the base of the PR and between 255c7e2 and 69be7d8.

📒 Files selected for processing (3)

• skills/cuopt-multi-objective-exploration/BENCHMARK.md
• skills/cuopt-multi-objective-exploration/skill-card.md
• skills/cuopt-multi-objective-exploration/skill.oms.sig

✅ Files skipped from review due to trivial changes (1)

• skills/cuopt-multi-objective-exploration/BENCHMARK.md

[coderabbitai]

📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win

Evaluation Agents format deviates from the documented template pattern.

Lines 32-34 list agent names as code-only (claude-code, codex), but the common skill-card template (referenced in context) specifies the format as Human-Readable Name (code-name), e.g., - Claude Code (claude-code). The current version is missing the human-readable agent names.

Verify whether this format change is intentional or should be corrected to match the template contract for consistency with other skills and NVSkills validation expectations.

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@skills/cuopt-multi-objective-exploration/skill-card.md` around lines 32 - 34,
The "Evaluation Agents Used" entries use only code names (`claude-code`,
`codex`) instead of the required human-readable format; update the list under
the "Evaluation Agents Used" heading to follow the template pattern by
prepending human-readable names and keeping the code names in parentheses (e.g.,
"Claude Code (`claude-code`)", "Codex (`codex`)") so the entries for claude-code
and codex match the common skill-card contract and NVSkills validation
expectations.

[rgsl888prabhu]

/ok to test 69be7d8