feat: add GrabCraft blueprints, building helpers, and world state awareness

- Phase 1: Player position (querytarget @s) and testforblock tools
- Phase 2: GrabCraft scraper with LRU cache, 372-block Java-to-Bedrock
  mapping, search and auto-build blueprint tools with dryRun support
- Phase 3: Raise build limit to 5000 (MAX_BUILD_COMMANDS env), add
  progress notifications and build cancellation
- Phase 4: Geometric shape builders (sphere, cylinder, dome, pyramid,
  wall, box) using fill commands for efficiency
- Phase 5: Event buffer 100->1000 (EVENT_BUFFER_SIZE env), add
  getByTypes and getSince query methods
- Phase 6: MCP resources for block ID reference and GrabCraft categories

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Dockerfile

@@ -1,14 +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"]
+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"]