[olist] [*] Implement copy and paste functionality to improve user efficiency. [*] Introduce multi-save slot support to allow players to manage multiple progress points. [*] Refine task prompts to provide clearer and more detailed instructions. [*] Enhance level connection feedback by displaying an error notification when players attempt to connect to an invalid node. [*] Streamline node settings by removing unnecessary options and reducing branching paths to prevent player confusion. [*] Add node usage limits per level to better guide players through the intended progression. [*] Optimize level validation logic to ensure players cannot bypass the intended design and fail to progress. [*] Fix the issue where memory nodes of the same type could be incorrectly connected. [*] Resolve occasional bugs with connection lines to ensure consistent functionality. [*] Address intermittent issues with camera panning controls to improve player experience. [/olist]