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

dist/README.md

@@ -9,7 +9,7 @@ This folder contains distribution packages for different Claude platforms.
 Upload each skill separately via Settings → Features → Skills:
 
 - `n8n-expression-syntax-v1.0.0.zip` - n8n expression syntax and common patterns
-- `n8n-mcp-tools-expert-v1.0.0.zip` - Expert guide for using n8n-mcp tools (HIGHEST PRIORITY)
+- `n8n-mcp-tools-expert-v1.0.0.zip` - Expert guide for using n8n-mcp tools (recommended to install first)
 - `n8n-workflow-patterns-v1.0.0.zip` - 5 proven workflow architectural patterns
 - `n8n-validation-expert-v1.0.0.zip` - Validation error interpretation and fixing
 - `n8n-node-configuration-v1.0.0.zip` - Operation-aware node configuration
@@ -96,7 +96,7 @@ After installation, test skills by asking:
 
 ## 🔧 Requirements
 
-- **n8n-mcp MCP server** installed and configured
+- **n8n-mcp MCP server** installed and configured ([Installation Guide](https://github.com/czlonkowski/n8n-mcp))
 - **Claude Pro, Max, Team, or Enterprise** plan (for Claude.ai skills)
 - **.mcp.json** configured with n8n-mcp server
 
@@ -131,4 +131,4 @@ MIT License - see `../LICENSE` file
 
 Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en
 
-Part of the n8n-mcp project.
+Part of the [n8n-mcp project](https://github.com/czlonkowski/n8n-mcp).