Refactors parse-prd MCP tool to properly handle project root and path resolution, fixing the 'Input file not found: /scripts/prd.txt' error.
Key changes include: Made projectRoot a required parameter, prioritized args.projectRoot over session-derived paths, added validation to prevent parsing in invalid directories (/, home dir), improved error handling with detailed messages, and added creation of output directory if needed.
This resolves issues similar to those fixed in initialize-project, where the tool was incorrectly resolving paths when session context was incomplete.