[docs] docs: unbloat frontmatter reference

[github-actions]

Summary

• unbloats docs/src/content/docs/reference/frontmatter.md
• condenses repetitive overview bullets into concise prose while preserving links and examples
• simplifies repeated entry-format lists for skills: and plugins:

Bloat removed

• replaced a 19-item trigger bullet list with a concise summary
• collapsed repetitive nested lists into shorter format descriptions
• trimmed wording in several explanatory sections without removing technical details

Impact

• 1 file changed
• about 37 lines removed overall
• reduced bullet-heavy sections and repeated phrasing while keeping all essential references intact

🗜️ Compressed by Documentation Unbloat · pi · gpt54 · 21.6 AIC · ⊞ 8.1K · ◷
_{Comment /unbloat to run again}

• expires on Sep 15, 2026, 5:13 PM UTC-08:00

[github-actions]

✅ Test Quality Sentinel completed test quality analysis.

No test files were added or modified in this PR. Test Quality Sentinel skipped. PR #60713 only changes docs/src/content/docs/reference/frontmatter.md (a documentation file).

🧪 Test quality analysis by Test Quality Sentinel

[Copilot]

🟢 Approval recommended

The documentation-only edits preserve essential technical guidance and references while improving concision.

Pull request overview

Condenses the frontmatter reference while preserving core behavior, examples, and links.

Changes:

• Summarizes trigger controls in prose.
• Simplifies skill and plugin format descriptions.
• Tightens explanatory wording throughout.

File summaries

File	Description
docs/src/content/docs/reference/frontmatter.md	Streamlines frontmatter documentation.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Balanced

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