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Implements export/restore functionality for MCP sessions to support container restarts without losing user sessions. This enables zero-downtime deployments for multi-tenant platforms and Kubernetes/Docker environments. New Features: - exportSessionState() - Export active sessions to JSON - restoreSessionState() - Restore sessions from exported data - SessionState type - Serializable session structure - Comprehensive test suite (22 tests, 100% passing) Implementation Details: - Only exports sessions with valid n8nApiUrl and n8nApiKey - Automatically filters expired sessions (respects sessionTimeout) - Validates context structure using existing validation - Handles null/invalid sessions gracefully with warnings - Enforces MAX_SESSIONS limit during restore (100 sessions) - Dormant sessions recreate transport/server on first request Files Modified: - src/http-server-single-session.ts: Core export/restore logic - src/mcp-engine.ts: Public API wrapper methods - src/types/session-state.ts: Type definitions - tests/: Comprehensive unit tests Security Note: Session data contains plaintext n8n API keys. Downstream applications MUST encrypt session data before persisting to disk. 🤖 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