There are some access issues with data that prevent it from being saved. From the console, it seems to save to the cache fine in your save manager but errors when updating the game state. Also, your feedback to your Google Form has access issues too. I can access the form directly but hook doesn't probabily fire.
The gameplay I could do (semi-automation):
Finally, you should be very careful about design and presentation being too similar to TFWR. While inspiration is fine to do your game should instead try to replicate UI elements and functionality. Since you listed LLM use for code and general assistance, I would make sure you carefully prompt it to not use assets or code from TFWR and/or be careful about code review. You could face some legal issues if you aren't careful.
Overall, I like the concept, but I couldn't really fully automate it.
I would have liked to make goto functions and start designating drop-off locations for the shelf. And actually require the shelves since the truck recharge speed is slow enough that you can just order what you need on demand instead of using them. Probably should also be something you can unlock instead of having 4.
One thing with movement is that you should maybe have the robot face the direction it's moving. Otherwise, you get optimal pathing like above, where it is better to go backwards instead of a full turn.
I am kind of skeptical that you could make unique and interesting puzzles from just this idea as well. Like, pathing is pretty simple, and there's basically no use for capacity, contents, look, or basically any sense right now since that could just be handled in memory. For example, there is no need to use look to know if you are in front of a conveyor since you know exactly where that is, so you can do precise pathing and return. It makes it so that senses are not very practical to use.
I hope that this continues with a good focus and less strict inspiration to TFWR design. And also that you try to add your own ideas instead of just what a LLM serves you. It's a nice concept and runs smooth enough. Good luck. :)