M1: initial scaffold — pipeline, specs, source, Dockerfile

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

Dockerfile

@@ -0,0 +1,18 @@
+FROM mcr.microsoft.com/playwright/node:20-noble
+
+WORKDIR /app
+
+# Install dependencies first (layer cache)
+COPY package*.json ./
+RUN npm ci --omit=dev
+
+# Copy source
+COPY src/ ./src/
+
+# Create default output dir (overridden by volume mount at runtime)
+RUN mkdir -p /output
+
+ENV OUTPUT_DIR=/output
+ENV NODE_ENV=production
+
+ENTRYPOINT ["node", "src/index.js"]