fix: validate file paths in saveFile to prevent path traversal#971

AI-Reviewer-QS wants to merge 1 commit intoChromeDevTools:mainChromeDevTools/chrome-devtools-mcp:mainfrom

AI-Reviewer-QS:fix/savefile-path-validationAI-Reviewer-QS/chrome-devtools-mcp:fix/savefile-path-validationCopy head branch name to clipboard