feat: Add detection for AI-style primary single quotes (Pattern #25 (new #19))

README.md

@@ -44,7 +44,7 @@ Based on [Wikipedia's "Signs of AI writing"](https://en.wikipedia.org/wiki/Wikip
 
 > "LLMs use statistical algorithms to guess what should come next. The result tends toward the most statistically likely result that applies to the widest variety of cases."
 
-## 24 Patterns Detected (with Before/After Examples)
+## 25 Patterns Detected (with Before/After Examples)
 
 ### Content Patterns
 
@@ -95,6 +95,12 @@ Based on [Wikipedia's "Signs of AI writing"](https://en.wikipedia.org/wiki/Wikip
 | 23 | **Excessive hedging** | "could potentially possibly" | "may" |
 | 24 | **Generic conclusions** | "The future looks bright" | Specific plans or facts |
 
+### Punctuation Patterns
+
+| # | Pattern | Before | After |
+|---|---------|--------|-------|
+| 25 | **Primary Single Quotes** | `stated, 'This is a pattern.'` | `stated, "This is a pattern."` |
+
 ## Full Example
 
 **Before (AI-sounding):**
@@ -110,6 +116,7 @@ Based on [Wikipedia's "Signs of AI writing"](https://en.wikipedia.org/wiki/Wikip
 
 ## Version History
 
+- **2.2.0** - Added Pattern #25 (Primary Single Quotes)
 - **2.1.1** - Fixed pattern #18 example (curly quotes vs straight quotes)
 - **2.1.0** - Added before/after examples for all 24 patterns
 - **2.0.0** - Complete rewrite based on raw Wikipedia article content

SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: humanizer
-version: 2.1.1
+version: 2.2.0
 description: |
   Remove signs of AI-generated writing from text. Use when editing or reviewing
   text to make it sound more natural and human-written. Based on Wikipedia's
@@ -389,6 +389,20 @@ Avoiding AI patterns is only half the job. Sterile, voiceless writing is just as
 
 ---
 
+## PUNCTUATION PATTERNS
+
+### 25. Primary Single Quotes (Code-Style Quotation)
+
+**Problem:** AI models trained on code often use single quotes as primary delimiters.
+
+**Before:**
+> stated, 'This is a pattern.'
+
+**After:**
+> stated, "This is a pattern."
+
+---
+
 ## Process
 
 1. Read the input text carefully

WARP.md

@@ -5,7 +5,7 @@ This file provides guidance to WARP (warp.dev) when working with code in this re
 ## What this repo is
 This repository is a **Claude Code skill** implemented entirely as Markdown.
 
-The “runtime” artifact is `SKILL.md`: Claude Code reads the YAML frontmatter (metadata + allowed tools) and the prompt/instructions that follow.
+The "runtime" artifact is `SKILL.md`: Claude Code reads the YAML frontmatter (metadata + allowed tools) and the prompt/instructions that follow.
 
 `README.md` is for humans: installation, usage, and a compact overview of the patterns.
 
@@ -16,7 +16,7 @@ The “runtime” artifact is `SKILL.md`: Claude Code reads the YAML frontmatter
   - After the frontmatter is the editor prompt: the canonical, detailed pattern list with examples.
 - `README.md`
   - Installation and usage instructions.
-  - Contains a summarized “24 patterns” table and a short version history.
+  - Contains a summarized "25 patterns" table and a short version history.
 
 When changing behavior/content, treat `SKILL.md` as the source of truth, and update `README.md` to stay consistent.
 
@@ -34,14 +34,14 @@ mkdir -p ~/.claude/skills/humanizer
 cp SKILL.md ~/.claude/skills/humanizer/
 ```
 
-## How to “run” it (Claude Code)
+## How to "run" it (Claude Code)
 Invoke the skill:
 - `/humanizer` then paste text
 
 ## Making changes safely
 ### Versioning (keep in sync)
 - `SKILL.md` has a `version:` field in its YAML frontmatter.
-- `README.md` has a “Version History” section.
+- `README.md` has a "Version History" section.
 
 If you bump the version, update both.