MCPFabric

Fabric and NeoForge. Implements #27, thanks to @faizsaifulnizam.

Added

• Supervised mode (#27), behind the new enableSupervisedControl flag (off by default, and independent of the other enable* flags) and reported as the supervised capability group. Each call is one narrow action under a grant that names its exact target, is bound to the current world and dimension, expires after 2 seconds and cannot be renewed; STOP, a context change or a new supervisor session fences it. New tools: supervised_input (one movement key for up to 10 ticks), supervised_read_block, supervised_set_block (only if the block there is the expected one), supervised_command (command roots from supervisedCommands), supervised_enter_world / supervised_leave_world (saves from supervisedWorlds), supervised_reconcile, supervised_status and supervised_stop. Every answer has an outcome (applied, not_applied, interrupted, pending, uncertain); while one is pending or uncertain, no other supervised action runs until it is reconciled, and nothing is retried automatically. The MCP server keeps the supervisor session id and request sequence numbers to itself, so stale and replayed requests are refused. Settled actions are reported as supervised_action events. See docs/SUPERVISED.md.