Palette Swap for MineColonies

Fixed

• Substitution broken in single-player (regression in 0.1.41) — the active ruleset was wiped during single-player world load (the disconnect-cleanup ran on the load-time teardown and erased the rules the datapack reload had just loaded), so no substitution applied: the build-wand Replace picker showed no pools and datapack rules did nothing. Rules are now cleared only on a genuine remote disconnect.
• Build Options Replace picker on high-level buildings — the picker now lists the correct upgrade tier's blocks for buildings at level 10 or above (the next-level blueprint path was mis-constructed for two-digit levels), and falls back to the current tier instead of showing an empty picker if MineColonies' blueprint naming ever changes.
• MineColonies client-sync hardening — the per-building choice data appended to MineColonies' building view sync now degrades gracefully if a future MineColonies update desynchronizes it, instead of risking a client crash on colony load.