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Problem Overview

• Implement a parser to validate HTTP GET/POST requests using a URL "token" and, for POST, a lowercase alphanumeric CSRF token (min length 8), then output URL params as a comma-separated list.
• Input: valid_auth_tokens (list) and requests (type, URL). Output: array of status strings: "VALID" or "INVALID", with parameters appended when valid.
• Context: web API authentication and URL parameter handling in client-server HTTP.
• Ibm interviews coding interview problem and interview question; constraints: m<=2e3, n<=5e3, token length=12.