feat: add quality scoring, core principles, and 3 wiki-sourced patterns

[Charpup]

Summary

• Quality Scoring System (/50, 5 dimensions): Directness, Rhythm, Reader Trust, Authenticity, Conciseness. Adapted from Humanizer-zh / stop-slop.
• 5 Core Principles quick reference: Delete filler, Break formula, Vary rhythm, Trust the reader, Kill the quotables.
• 6-item Quick Checklist for pre-delivery audit (sentence length, paragraph endings, em dashes, metaphor trust, connectors, rule of three).
• 3 new patterns (P30-P32) sourced from Wikipedia: Signs of AI writing and WikiProject AI Cleanup:
  • P30: Citation Fabrication / Hallucinated Sources
  • P31: Broken Markup Artifacts
  • P32: Era-Specific Vocabulary Clustering
• Detection Confidence Framework: Categorizes all 32 patterns by signal strength (HIGH/MEDIUM/LOW) with a combined indicator principle.

Motivation

These additions make the skill more actionable in practice:

• The scoring system gives writers a concrete target (≥40/50) instead of subjective judgment
• Core principles and checklist speed up the self-editing loop
• Wikipedia-sourced patterns cover detection gaps (especially citation hallucination and markup artifacts) that the current 29 patterns miss
• The confidence framework helps prioritize which patterns matter most

All new content is English-only and maintains the existing style/structure.

Test plan

• Verify YAML frontmatter still parses correctly
• Verify new patterns (30-32) appear in correct location after Pattern 29
• Verify scoring, principles, checklist, and confidence framework sections are placed after Output Format
• Test with sample AI-generated text to confirm new patterns are detected

🤖 Generated with Claude Code