diff --git a/features/quality-assurance/docker-compose.yml b/features/quality-assurance/docker-compose.yml
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+# =============================================================================
+# QUALITY-ASSURANCE: Database Infrastructure
+# =============================================================================
+#
+# PostgreSQL for QA reports, comments, and subscriptions.
+#
+# Usage:
+#   docker-compose up -d        # Start postgres
+#   docker-compose logs -f      # Follow logs
+#   docker-compose down         # Stop
+#
+# =============================================================================
+
+services:
+  qa-postgres:
+    image: postgres:16-alpine
+    container_name: lilith-qa-postgres
+    restart: unless-stopped
+
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER:-qa}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-devpassword}
+      POSTGRES_DB: ${POSTGRES_DB:-lilith_qa}
+
+    ports:
+      - "${POSTGRES_PORT:-25450}:5432"
+
+    volumes:
+      - qa-postgres-data:/var/lib/postgresql/data
+
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U ${POSTGRES_USER:-qa} -d ${POSTGRES_DB:-lilith_qa}']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+    logging:
+      driver: json-file
+      options:
+        max-size: "100m"
+        max-file: "5"
+
+volumes:
+  qa-postgres-data:
+    name: lilith-${LILITH_ENV:-dev}-qa-postgres-data