Fixes

• Fixed a lag leak: chunk-loading areas around players were never removed when they left an ore dimension or the game, keeping chunks loaded forever
• Fixed broken village beds: both bed halves used a fixed facing while houses are randomly rotated, so beds were placed mismatched
• Fixed arrival errors on disconnect: leaving during world generation threw an error that skipped cleanup, leaving a temporary loaded area behind
• Fixed the lost return portal: breaking it left the dimension with no way back; it is now rebuilt on arrival if no portal remains