Rename page-copywriting to copywriting

- Renamed skills/page-copywriting.md to skills/copywriting.md
- Updated all references across 8 skill files
- Re-sorted README skills table alphabetically

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -18,6 +18,7 @@ Skills are markdown files that give AI agents specialized knowledge and workflow
 | [analytics-tracking](skills/analytics-tracking.md) | Set up tracking and measurement | "tracking," "GA4," "GTM," "events" |
 | [competitor-alternatives](skills/competitor-alternatives.md) | Competitor comparison and alternative pages | "vs page," "alternative page," "[X] vs [Y]" |
 | [copy-editing](skills/copy-editing.md) | Edit and polish existing copy | "edit this copy," "review my copy," "copy sweep" |
+| [copywriting](skills/copywriting.md) | Write or improve marketing copy | "write copy," "rewrite," "headlines," "CTA copy" |
 | [email-sequence](skills/email-sequence.md) | Build email sequences and drip campaigns | "email sequence," "drip campaign," "nurture" |
 | [form-cro](skills/form-cro.md) | Optimize lead capture and contact forms | "form optimization," "lead form," "contact form" |
 | [free-tool-strategy](skills/free-tool-strategy.md) | Plan engineering-as-marketing tools | "free tool," "calculator," "lead gen tool" |
@@ -25,7 +26,6 @@ Skills are markdown files that give AI agents specialized knowledge and workflow
 | [marketing-ideas](skills/marketing-ideas.md) | 140 SaaS marketing ideas and strategies | "marketing ideas," "growth ideas," "how to market" |
 | [marketing-psychology](skills/marketing-psychology.md) | 70+ mental models for marketing | "psychology," "mental models," "cognitive bias" |
 | [onboarding-cro](skills/onboarding-cro.md) | Improve user activation and onboarding | "onboarding," "activation," "first-run experience" |
-| [page-copywriting](skills/page-copywriting.md) | Write or improve marketing copy | "write copy," "rewrite," "headlines," "CTA copy" |
 | [page-cro](skills/page-cro.md) | Conversion optimization for any marketing page | "optimize [page]," "CRO," "page isn't converting" |
 | [paywall-upgrade-cro](skills/paywall-upgrade-cro.md) | In-app paywalls and upgrade screens | "paywall," "upgrade screen," "feature gate" |
 | [popup-cro](skills/popup-cro.md) | Create/optimize popups and modals | "popup," "modal," "exit intent" |
@@ -83,7 +83,7 @@ Once installed, just ask Claude Code to help with marketing tasks:
 → Uses page-cro skill
 
 "Write homepage copy for my SaaS"
-→ Uses page-copywriting skill
+→ Uses copywriting skill
 
 "Set up GA4 tracking for signups"
 → Uses analytics-tracking skill
@@ -111,7 +111,7 @@ You can also invoke skills directly:
 - `paywall-upgrade-cro` - In-app upgrade moments
 
 ### Content & Copy
-- `page-copywriting` - Marketing page copy
+- `copywriting` - Marketing page copy
 - `copy-editing` - Edit and polish existing copy
 - `email-sequence` - Automated email flows