feat: Tool consolidation v2.26.0 - reduce tools by 38% (31 → 19)

Major consolidation of MCP tools using mode-based parameters for better
AI agent ergonomics:

Node Tools:
- get_node_documentation → get_node with mode='documentation'
- search_node_properties → get_node with mode='search_properties'
- get_property_dependencies → removed

Validation Tools:
- validate_node_operation + validate_node_minimal → validate_node with mode param

Template Tools:
- list_node_templates → search_templates with searchMode='nodes'
- search_templates_by_metadata → search_templates with searchMode='metadata'
- get_templates_for_task → search_templates with searchMode='task'

Workflow Getters:
- n8n_get_workflow_details/structure/minimal → n8n_get_workflow with mode param

Execution Tools:
- n8n_list/get/delete_execution → n8n_executions with action param

Test updates for all consolidated tools.

🤖 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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "n8n-mcp",
-  "version": "2.24.1",
+  "version": "2.26.0",
   "description": "Integration between n8n workflow automation and Model Context Protocol (MCP)",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",