Is it possible to go to jail for violating the sunshine agreement?

No, the sunshine agreement is only signed privately by the enterprise. It is not stipulated by law, and you will not go to jail, but you may be asked for compensation.

It's a civil dispute and won't go to jail. If one party fails to perform the contractual obligations or fails to meet the contractual obligations, it shall be liable for breach of contract, such as continuing to perform, taking remedial measures or compensating for losses.