refactor(skills): move copy-editing catalogs to references

Keep the decision steps in SKILL.md and move catalogs, examples, and
checklists verbatim to references/ to reduce the context cost of loading the
skill.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shared/skills/copy-editing/references/quick-pass-checks.md

@@ -0,0 +1,44 @@
+# Quick-Pass Editing Checks
+
+## Word-Level Checks
+
+**Cut these words:**
+- Very, really, extremely, incredibly (weak intensifiers)
+- Just, actually, basically (filler)
+- In order to (use "to")
+- That (often unnecessary)
+- Things, stuff (vague)
+
+**Replace these:**
+
+| Weak | Strong |
+|------|--------|
+| Utilize | Use |
+| Implement | Set up |
+| Leverage | Use |
+| Facilitate | Help |
+| Innovative | New |
+| Robust | Strong |
+| Seamless | Smooth |
+| Cutting-edge | New/Modern |
+
+**Watch for:**
+- Adverbs (usually unnecessary)
+- Passive voice (switch to active)
+- Nominalizations (verb → noun: "make a decision" → "decide")
+
+## Sentence-Level Checks
+
+- One idea per sentence
+- Vary sentence length (mix short and long)
+- Front-load important information
+- Max 3 conjunctions per sentence
+- No more than 25 words (usually)
+
+## Paragraph-Level Checks
+
+- One topic per paragraph
+- Short paragraphs (2-4 sentences for web)
+- Strong opening sentences
+- Logical flow between paragraphs
+- White space for scannability