refactor: rewrite all MCP tool documentation for AI agent optimization

- Redesigned documentation to be utilitarian and AI-agent focused
- Removed all pleasantries, emojis, and conversational language
- Added concrete numbers throughout (528 nodes, 108 triggers, 264 AI tools)
- Updated all tool descriptions with practical, actionable information
- Enhanced examples with actual return structures and usage patterns
- Made Code node guides prominently featured in overview
- Verified documentation accuracy through extensive testing
- Standardized format across all 30+ tool documentation files

Documentation now optimized for token efficiency while maintaining
clarity and completeness for AI agent consumption.

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

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

src/mcp/tool-docs/templates/get-template.ts

@@ -33,7 +33,10 @@ export const getTemplateDoc: ToolDocumentation = {
   - views: Number of times viewed
   - created: Creation date
   - url: Link to template on n8n.io
-  - workflow: Complete workflow JSON ready for import
+  - workflow: Complete workflow JSON with structure:
+    - nodes: Array of node objects (id, name, type, typeVersion, position, parameters)
+    - connections: Object mapping source nodes to targets
+    - settings: Workflow configuration (timezone, error handling, etc.)
 - usage: Instructions for using the workflow`,
     examples: [
       'get_template({templateId: 1234}) - Get Slack notification workflow',