Bureaucracy: contract

Contract v1.1.0

This update completes the contract signing system, both mechanically and visually. The feature is now considered complete and polished.

✅ Added:

• Signed contracts now have an enchantment glint.
• Added Author: and Signee: labels to contract tooltips.
• General code refactoring and cleanup.

🚧 Future Development:

• Content development (excluding bug fixes) has been postponed indefinitely. The future direction of the project is currently undecided.

If you encounter any bugs, crashes, or unexpected behavior, please open an issue on GitHub and include as much information as possible (Minecraft version, Fabric version, mod version, and steps to reproduce the problem). Feedback and feature suggestions are always appreciated!