Mosaic Code Units is a management tool for developers and site administrators to add custom PHP, CSS, and JavaScript without editing core files. It is designed for those who need to extend site functionality and modify styling while maintaining a clean, update-safe codebase.

• Safe Execution Mode automatically checks for syntax errors and deactivates any problematic snippet to prevent site crashes, allowing for safer development and testing.
• Conditional Logic enables rules to trigger code based on specific conditions like page IDs, post types, or user roles, giving precise control over where and when snippets run.
• Centralized Management offers a single dashboard to activate, deactivate, and manage all custom code, reducing the need for multiple plugins and scattered file edits.
• Code Organization includes features for tagging and categorizing snippets, which helps document changes and simplifies maintenance for teams.

By keeping custom logic separate from the active theme, this tool enhances site stability and makes code portable during migrations or design updates.