feat: improve content-pipeline skill score (86% → 92%)

[rohan-tessl]

Hey @OrangeViolin 👋

I ran your skills through tessl skill review at work and found some targeted improvements. Here's the full before/after:

Skill	Before	After	Change
content-pipeline	86%	92%	+6%

This PR covers your 1 skill in the repo. I kept changes focused and non-breaking — only the single SKILL.md was in scope.

What changed in content-pipeline

• Description enhanced with an explicit "Use when..." clause and bilingual (Chinese + English) trigger terms for better agent discovery
• Added user-invocable: true and triggers array with 15 natural trigger keywords for frontmatter compliance
• Moved ethics reasoning ("为什么要诚实" + prohibited/correct examples) to references/honesty-principles.md — kept the quick-reference labeling template inline
• Moved brand color tables (01fish墨绿 + 鱼头头桃粉 full palettes, selection rules, font/badge specs) to references/brand-colors.md — kept a concise summary inline
• Fixed podcast output count — listed "三样" (3) but enumerated 5 items; corrected to "五样"
• Updated reference index to include the two new reference files

Tessl Skill Review GitHub Action ✅

I've also included a GitHub Action (.github/workflows/skill-review.yml) that automatically reviews any SKILL.md changed in future PRs and posts scores as a PR comment.

What this gives you:

• 🔍 Automatic tessl skill review runs on every PR touching SKILL.md
• 💬 One updated PR comment with scores and improvement feedback
• 🔓 Zero extra accounts — contributors don't need a Tessl login; only GITHUB_TOKEN is used
• ✅ Non-blocking by default — feedback-only, no surprise red CI (add fail-threshold: 70 later if you want a hard gate)
• 📈 Covers future skills incrementally as contributors edit them

Want automatic AI optimization on every SKILL.md change? 🚀

The action I've added gives you review scores on PRs. We also have a more powerful variant — tesslio/skill-review-and-optimize — that can:

• Run AI-powered optimization suggestions on every SKILL.md PR (requires adding TESSL_API_TOKEN as a repo secret)
• Let contributors accept suggested improvements by commenting /apply-optimize
• Still works in review-only mode with zero secrets

Interested? Tick the box and I'll raise a follow-up PR:

• Yes please! Add the tesslio/skill-review-and-optimize action so every SKILL.md PR gets AI optimization suggestions + the /apply-optimize flow
• No thanks — the review scores action is enough for now

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Honest disclosure — I work at @tesslio where we build tooling around skills like these. Not a pitch — just saw room for improvement and wanted to contribute.

Want to self-improve your skills? Just point your agent (Claude Code, Codex, etc.) at this Tessl guide and ask it to optimize your skill. Ping me — @rohan-tessl — if you hit any snags.

Thanks in advance 🙏