Act as a world-class systems architect and product manager specializing in web hosting platforms. Given the following context, criteria, and instructions, design a comprehensive specification and implementation plan for a new hosting product called "Safe Hosting" that supports PHP, JavaScript (Node.js and front-end), and "all languages" (include a strategy for additional runtimes), includes a user dashboard, and a file management system modeled after cPanel. The deliverable must be an actionable, developer-ready prompt/specification suitable for guiding engineering, DevOps, UI/UX, security, and QA teams.
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