König stuhl mod

Adds two themed blocks for a server-side kingdom flow (Minecraft 1.21.x, works through 1.21.5 via the version range).
Thron (knigstuhl:thron): only the crowned king can sit. Sitting spawns an invisible seat, plays a soft amethyst resonance, surrounds the king with a golden aura, and broadcasts the chat title "👑 König von <Reich>".
Gerichtstisch (knigstuhl:gerichtstisch): place it to declare verdicts. Use a custom-named paper/book in either hand to right-click and announce the verdict with a bell tone and particles.
Commands:
- /setking <player> [reich] (op): crowns a king and sets the displayed realm label.
- /clearking (op): clears the throne.
- /kinginfo: shows who is crowned (or if the king is offline).
- /urteil <text>: king-only, must stand within 5 blocks of a Gerichtstisch; broadcasts the verdict message.
King data persists across restarts. Realm defaults to the king's current dimension id if no realm name is supplied.
Blocks drop themselves when broken and can be obtained via /give or creative inventory if the mod is present.

Notes & limitations

Clients need this mod/resource content to see the throne and table models/textures.
Seating uses an invisible armor stand rider; it is cleaned up automatically when empty or if the block is removed.
Only one king is tracked at a time; there is no built-in access control beyond the king check.
Verdict interactions prefer a custom-named paper or book in the player's hands; otherwise a usage hint is shown.

✅ Server validation passed - The mod was tested on a real Minecraft server and loaded successfully.