docs: Remove telemetry and research context from user-facing documentation

Clean up all README files to focus on user value rather than research metrics.
Remove telemetry numbers and research context that isn't useful for end users.

## Changes

**Main README.md**:
- Removed "Based on 447,557 real MCP tool usage events" section
- Replaced failure rate metrics with user benefits
- Removed entire "Data-Driven Design" section with telemetry statistics
- Fixed all GitHub links to use czlonkowski/n8n-mcp
- Updated "Repository Stats" to "What's Included" with user-focused content

**dist/README.md**:
- Changed "HIGHEST PRIORITY" to "recommended to install first"
- Added link to n8n-mcp repository
- More user-friendly language throughout

**Skill README.md files**:
- n8n-mcp-tools-expert: Removed "447,557 events", "20% failure rate" metrics
- n8n-workflow-patterns: Removed "Based on 31,917 real workflows"
- n8n-validation-expert: Removed "From 7,841 validate → fix cycles"
- Replaced frequency percentages with priority levels (Highest/High/Medium/Low)
- Reframed "Success Metrics" as "What You'll Learn"
- Changed "Critical Insights from telemetry" to "Key Insights" for users

## Kept What Matters

- Template counts (2,653+) - this is a feature, not research
- Node counts (525+) - this is a feature
- Practical insights (validation takes 2-3 iterations, false positives exist)
- Best practices and common patterns

## Result

Documentation now focuses on what users need to know to use the skills
effectively, rather than the research that informed their creation.

All distribution packages regenerated with cleaned documentation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

skills/n8n-workflow-patterns/README.md

@@ -93,12 +93,12 @@ Teaches architectural patterns for building n8n workflows. Provides structure, b
 
 ## Key Features
 
-✅ **Data-Driven**: Based on 31,917 real workflows
-✅ **Pattern Statistics**: Usage data for each pattern
-✅ **Complete Examples**: Working workflows for each pattern
-✅ **Best Practices**: Proven approaches from production workflows
-✅ **Common Gotchas**: Documented mistakes and fixes
+✅ **5 Proven Patterns**: Webhook, HTTP API, Database, AI Agent, Scheduled tasks
+✅ **Complete Examples**: Working workflow configurations for each pattern
+✅ **Best Practices**: Proven approaches from real-world n8n usage
+✅ **Common Gotchas**: Documented mistakes and their fixes
 ✅ **Integration Guide**: How patterns work with other skills
+✅ **Template Examples**: Real examples from 2,653+ n8n templates
 
 ## Files