School Vacation MCP Server

Refactor: Update MCP server to 2025-06-18 specification Major version upgrade and security enhancements: Changes: - Upgrade @modelcontextprotocol/sdk from v0.4.0 to v1.21.0 - Update protocol version from 2024-11-05 to 2025-06-18 - Fix breaking changes in Server constructor API - Add token-based authentication system - Implement audit logging for security - Add comprehensive documentation Modified Files: - package.json: Update SDK dependency - src/index.ts: Fix Server constructor API - src/mcp-http-server.ts: Add protocol version constant & auth - docker-compose.yml: Add MCP_AUTH_TOKEN environment variable New Files: - src/auth.ts: Authentication & audit logging middleware - README.md: Complete project documentation - MCP_COMPLIANCE.md: Detailed compliance report (9.9 KB) - UPGRADE_SUMMARY.md: Quick upgrade reference guide (5.4 KB) - .env.example: Configuration template Security Improvements: - Token-based authentication via MCP_AUTH_TOKEN - Development mode (no auth) when token not set - Production mode requires Bearer token - Audit logging for all MCP requests - Proper JSON-RPC error codes for auth failures Testing: - All server modes tested (stdio, HTTP, combined) - Protocol version negotiation verified - Tool listing and execution confirmed - Authentication system validated Breaking Changes: Server constructor signature changed from single object to two parameters (server info, options). See UPGRADE_SUMMARY.md for migration guide. Compliance: MCP 2025-06-18 ✓ Status: Production Ready ✓