Prepare NeuroScan for Railway deployment: Add CORS support, environment-based config, and comprehensive deployment documentation#2

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copilot/fix-69c6918e-d325-4334-847d-85a6f7d1b42eyashnaiduu/NeuroScan:copilot/fix-69c6918e-d325-4334-847d-85a6f7d1b42eCopy head branch name to clipboard