Implement independent error storage system and comprehensive improvements

Major Features:
• Add persistent error tracking for timeout/network failures that bypasses PayloadCMS output limitations
• Implement smart error classification (timeout, DNS, connection, network) with duration-based detection
• Add comprehensive test infrastructure with MongoDB in-memory testing and enhanced mocking
• Fix HTTP request handler error preservation with detailed context storage
• Add independent execution tracking with success/failure status and duration metrics

Technical Improvements:
• Update JSONPath documentation to use correct $.trigger.doc syntax across all step types
• Fix PayloadCMS job execution to use runByID instead of run() for reliable task processing
• Add enhanced HTTP error handling that preserves outputs for 4xx/5xx status codes
• Implement proper nock configuration with undici for Node.js 22 fetch interception
• Add comprehensive unit tests for WorkflowExecutor with mocked PayloadCMS instances

Developer Experience:
• Add detailed error information in workflow context with URL, method, timeout, attempts
• Update README with HTTP error handling patterns and enhanced error tracking examples
• Add test helpers and setup infrastructure for reliable integration testing
• Fix workflow step validation and JSONPath field descriptions

Breaking Changes: None - fully backward compatible

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

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

package.json

@@ -70,6 +70,7 @@
     "@payloadcms/ui": "3.45.0",
     "@playwright/test": "^1.52.0",
     "@swc/cli": "0.6.0",
+    "@types/nock": "^11.1.0",
     "@types/node": "^22.5.4",
     "@types/node-cron": "^3.0.11",
     "@types/react": "19.1.8",
@@ -80,6 +81,7 @@
     "graphql": "^16.8.1",
     "mongodb-memory-server": "10.1.4",
     "next": "15.4.4",
+    "nock": "^14.0.10",
     "payload": "3.45.0",
     "react": "19.1.0",
     "react-dom": "19.1.0",
@@ -87,6 +89,7 @@
     "sharp": "0.34.3",
     "tsx": "^4.20.5",
     "typescript": "5.7.3",
+    "undici": "^7.15.0",
     "vitest": "^3.1.2"
   },
   "peerDependencies": {