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>

Dockerfile

@@ -0,0 +1,14 @@
+FROM node:22-alpine
+
+WORKDIR /app
+
+COPY package.json package-lock.json* ./
+RUN npm ci --production 2>/dev/null || npm install --production
+
+COPY src/ ./src/
+
+EXPOSE 3001 3002
+
+USER node
+
+CMD ["node", "src/index.js"]