fix: add table of contents to all reference files

Per Anthropic's Agent Skills best practices, reference files over
  100 lines should include a TOC so Claude can see full scope when
  previewing with partial reads. Added ## Contents section to all
  32 reference files.

skills/competitor-alternatives/references/content-architecture.md

@@ -2,6 +2,14 @@
 
 How to structure and maintain competitor data for scalable comparison pages.
 
+## Contents
+- Centralized Competitor Data
+- Competitor Data Template
+- Your Product Data
+- Page Generation
+- Index Page Structure (alternatives index, vs comparisons index, index page best practices)
+- Footer Navigation
+
 ## Centralized Competitor Data
 
 Create a single source of truth for each competitor:

skills/competitor-alternatives/references/templates.md

@@ -2,6 +2,17 @@
 
 Ready-to-use templates for each section of competitor comparison pages.
 
+## Contents
+- TL;DR Summary
+- Paragraph Comparison (Not Just Tables)
+- Feature Comparison Section
+- Pricing Comparison Section
+- Service & Support Comparison
+- Who It's For Section
+- Migration Section
+- Social Proof Section
+- Comparison Table Best Practices (beyond checkmarks, organize by category, include ratings where useful)
+
 ## TL;DR Summary
 
 Start every page with a quick summary for scanners: