feat: add multi-step flow to n8n_generate_workflow tool (v2.44.0)

Enable AI agents to act as quality gates for workflow generation:
proposals → review → deploy. New parameters: deploy_id, confirm_deploy.
New types: GenerateWorkflowProposal, status field on result.

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

dist/mcp/tools-n8n-manager.js

@@ -638,9 +638,10 @@ exports.n8nManagementTools = [
     {
         name: 'n8n_generate_workflow',
         description: 'Generate an n8n workflow from a natural language description using AI. ' +
-            'Describe what the workflow should do (trigger type, services, logic) and this tool ' +
-            'will create and deploy a ready-to-use workflow to your n8n instance. ' +
-            'Set skip_cache=true to force fresh generation instead of using pre-built templates.',
+            'Call with just a description to get workflow proposals. ' +
+            'Then call again with deploy_id to deploy a chosen proposal, ' +
+            'or set skip_cache=true to generate a fresh workflow. ' +
+            'Use confirm_deploy=true to deploy a previously generated workflow.',
         inputSchema: {
             type: 'object',
             properties: {
@@ -651,8 +652,17 @@ exports.n8nManagementTools = [
                 },
                 skip_cache: {
                     type: 'boolean',
-                    description: 'Set to true to bypass the workflow cache and force fresh AI generation. ' +
-                        'Default: false (uses cached workflows when a good match exists).'
+                    description: 'Set to true to skip proposals and generate a fresh workflow from scratch. ' +
+                        'Returns a preview — call again with confirm_deploy=true to deploy it.'
+                },
+                deploy_id: {
+                    type: 'string',
+                    description: 'ID of a proposal to deploy. Get proposal IDs from a previous call ' +
+                        'that returned status "proposals".'
+                },
+                confirm_deploy: {
+                    type: 'boolean',
+                    description: 'Set to true to deploy the workflow from the last generation preview.'
                 }
             },
             required: ['description'],