Add containerized agent execution with Apple Container

- Agents run in isolated Linux VMs via Apple Container
- All groups get Bash access (safe - sandboxed in container)
- Browser automation via agent-browser + Chromium
- Per-group configurable additional directory mounts
- File-based IPC for messages and scheduled tasks
- Container image with Node.js 22, Chromium, agent-browser

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

container/Dockerfile

@@ -0,0 +1,57 @@
+# NanoClaw Agent Container
+# Runs Claude Agent SDK in isolated Linux VM with browser automation
+
+FROM node:22-slim
+
+# Install system dependencies for Chromium
+RUN apt-get update && apt-get install -y \
+    chromium \
+    fonts-liberation \
+    fonts-noto-color-emoji \
+    libgbm1 \
+    libnss3 \
+    libatk-bridge2.0-0 \
+    libgtk-3-0 \
+    libx11-xcb1 \
+    libxcomposite1 \
+    libxdamage1 \
+    libxrandr2 \
+    libasound2 \
+    libpangocairo-1.0-0 \
+    libcups2 \
+    libdrm2 \
+    libxshmfence1 \
+    curl \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set Chromium path for agent-browser
+ENV AGENT_BROWSER_EXECUTABLE_PATH=/usr/bin/chromium
+ENV PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH=/usr/bin/chromium
+
+# Install agent-browser globally
+RUN npm install -g agent-browser
+
+# Create app directory
+WORKDIR /app
+
+# Copy package files first for better caching
+COPY agent-runner/package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy source code
+COPY agent-runner/ ./
+
+# Build TypeScript
+RUN npm run build
+
+# Create workspace directories
+RUN mkdir -p /workspace/group /workspace/global /workspace/extra /workspace/ipc/messages /workspace/ipc/tasks
+
+# Set working directory to group workspace
+WORKDIR /workspace/group
+
+# Entry point reads JSON from stdin, outputs JSON to stdout
+ENTRYPOINT ["node", "/app/dist/index.js"]