feat: initial Minecraft Bedrock AI Bridge MCP server

MCP server that bridges Minecraft Bedrock Edition's WebSocket API
to Claude Code CLI. Exposes 6 tools: minecraft_command, minecraft_chat,
minecraft_build, minecraft_get_events, minecraft_get_status, minecraft_subscribe.

Supports both SSE and Streamable HTTP MCP transports.
Privacy-first: no disk persistence, no telemetry, memory-only event buffer.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,12 @@
+services:
+  mc-ai-bridge:
+    build: .
+    container_name: mc-ai-bridge
+    ports:
+      - "3001:3001"  # Minecraft WebSocket
+      - "3002:3002"  # MCP SSE transport
+    environment:
+      - WS_PORT=3001
+      - MCP_PORT=3002
+      - NODE_ENV=production
+    restart: unless-stopped