Add Meta-Analysis MCP Server (github#139)

- Professional MCP server for conducting meta-analyses
- Supports multiple effect measures (OR, RR, MD, SMD, HR)
- Automated statistical validation and R integration
- Publication-ready forest plots and reports
- Docker image: mmrech/mcp-meta-analysis-r:latest

Author: matheus-rech

servers/mcp-meta-analysis-r/server.yaml

@@ -0,0 +1,65 @@
+name: mcp-meta-analysis-r
+image: mmrech/mcp-meta-analysis-r:latest
+type: server
+meta:
+  category: data-science
+  tags:
+    - statistics
+    - meta-analysis
+    - research
+    - healthcare
+    - r-statistics
+    - data-science
+    - clinical-trials
+about:
+  title: Meta-Analysis MCP Server
+  description: |
+    A professional MCP server for conducting meta-analyses with automated statistical validation, R integration, and publication-ready outputs.
+    
+    Features:
+    • Guided workflow for meta-analysis from data import to report generation
+    • Support for multiple effect measures (OR, RR, MD, SMD, HR)
+    • Automated statistical validation and data quality checks
+    • Forest plots and funnel plots with customizable styles
+    • Publication bias assessment (Egger's test, Begg's test, trim-and-fill)
+    • Heterogeneity analysis (I², Q-test, τ²)
+    • Support for CSV, Excel, and RevMan data formats
+    • Comprehensive report generation (HTML/PDF/Word)
+    • Session-based workflow management
+    • Containerized R environment with meta, metafor packages
+    
+    Perfect for researchers, clinicians, and data scientists conducting systematic reviews and meta-analyses.
+  icon: 📊
+source:
+  project: https://github.com/matheus-rech/mcp-meta-analysis-with-r
+run:
+  volumes:
+    - '{{meta-analysis.sessions_path}}:/app/user_sessions'
+    - '{{meta-analysis.logs_path}}:/app/logs'
+config:
+  description: Configure paths for session data and logs
+  env:
+    - name: NODE_ENV
+      example: production
+      value: 'production'
+    - name: LOG_LEVEL
+      example: info
+      value: 'info'
+    - name: USE_DOCKER
+      example: 'false'
+      value: 'true'
+      description: Use Docker for R execution (set to false if R is installed locally)
+  parameters:
+    type: object
+    properties:
+      sessions_path:
+        type: string
+        description: Directory path where session data will be stored
+        default: /Users/local-test/meta-analysis-sessions
+      logs_path:
+        type: string
+        description: Directory path where logs will be stored
+        default: /Users/local-test/meta-analysis-logs
+    required:
+      - sessions_path
+      - logs_path